900000000000509007: United States of America English language reference set (foundation metadata concept)

SNOMED CT Concept\SNOMED CT Model Component\Foundation metadata concept (foundation metadata concept)\Reference set\Language type reference set (foundation metadata concept)\English [International Organization for Standardization 639-1 code en] language reference set (foundation metadata concept)\US English

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT model component module (core metadata concept)

Descriptions:

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
US English	Is a	English [International Organization for Standardization 639-1 code en] language reference set (foundation metadata concept)	true	Inferred relationship	Some

Members	acceptabilityId
A procedure done by piercing or penetrating with a pointed object or instrument	Preferred (foundation metadata concept)
A procedure in which an endoscope is used to access the procedure site.	Preferred (foundation metadata concept)
A procedure on the respiratory tract that observes pulmonary function	Preferred (foundation metadata concept)
A procedure that assesses the quality of health care service delivery	Preferred (foundation metadata concept)
A procedure that mobilizes or frees up an abnormally fixed structure	Preferred (foundation metadata concept)
A procedure to ascertain the level of antigen in a specimen.	Preferred (foundation metadata concept)
A procedure to remove the remaining thyroid tissue after a previous partial thyroid resection.	Preferred (foundation metadata concept)
A procedure to repair a defect of the atrioventricular septum, contiguous atrial and ventricular septal defects and abnormalities of the atrioventricular valves. The severity of the atrioventricular valve abnormalities can vary. A defect of the atrioventricular septum has previously been known as an endocardial cushion defect or atrioventricular canal defect.	Preferred (foundation metadata concept)
A process characterized by an initial humoral or cell-mediated immune response to a foreign antigen resulting in the production of specific antibodies and/or immune cells which may then lead to an allergic disposition.	Preferred (foundation metadata concept)
A process characterized by an initial immune response to a foreign or self antigen resulting in the production of specific immunologic memory cells, antibodies and immune effector cells.	Preferred (foundation metadata concept)
A process characterized by an initial immune response to a foreign tissue antigen of the same species resulting in the production of specific immunologic memory cells, antibodies and immune effector cells which may lead to cellular destruction or transplant rejection.	Preferred (foundation metadata concept)
A process of working with others such as teachers, parents and care staff with the purpose of modifying their perceptions, attitudes, knowledge or understanding in order to enhance occupational performance within the patient's social environment.	Preferred (foundation metadata concept)
A process that reduces the level of inorganic precipitate within the organic matrix in the enamel and dentin of the tooth.	Preferred (foundation metadata concept)
A process where a dose form is transformed from that supplied by the manufacturer into a new dose form. This may occur as part of the dispensing act or immediately before administration.	Preferred (foundation metadata concept)
A professional discipline that combines basic pharmacology and clinical medicine with a focus of developing and understanding new drug therapies.	Preferred (foundation metadata concept)
A professional who works in projects of sponsoring organization and is responsible for planning, organizing and conducting regulated research.	Preferred (foundation metadata concept)
A progressive autosomal dominant macular dystrophy with characteristics of parafoveal hypopigmentation followed by a retinitis pigmentosa-like phenotype (nyctalopia and peripheral vision loss) with a bull's eye configuration.	Preferred (foundation metadata concept)
A progressive chronic inflammatory disease of the central nervous system with the etiologic agent Human T cell lymphotropic virus type I (HTLV-I), the disease is characterized by unremitting myelopathic symptoms such as spastic paraparesis, bowel and/or bladder dysfunction and sensory changes of the lower limbs.	Preferred (foundation metadata concept)
A progressive muscular dystrophy with characteristics of co-existence of limb-girdle weakness and diffuse joint contractures without cardiomyopathy. Patients present lower limb weakness progressing to involve also upper limbs and axial muscles and eventually leading to permanent loss of ambulation, widespread joint contractures in the limbs and sometimes the spine and variable respiratory involvement. Morphological changes in muscle biopsies include rimmed vacuoles, increased internal nuclei, cytoplasmic bodies and a dystrophic pattern.	Preferred (foundation metadata concept)
A progressive reduction in amplitude during a writing task	Preferred (foundation metadata concept)
A propensity to an adverse reaction which is not an allergy or nonallergic hypersensitivity FHIR Release 3 (STU).	Preferred (foundation metadata concept)
A propensity to developing a pathological immune process generally directed towards a foreign antigen, which results in tissue injury. It is most often applied to type I hypersensitivity but other hypersensitivity types especially type IV (e.g. allergic contact dermatitis) may be involved. Revised nomenclature for allergy for global use:Report of the Nomenclature Review Committee of the World Allergy Organization, October 2003.	Preferred (foundation metadata concept)
A propensity to developing an adverse reaction upon exposure to an agent at a dose otherwise tolerated by normal individuals. Revised nomenclature for allergy for global use:Report of the Nomenclature Review Committee of the World Allergy Organization, October 2003.	Preferred (foundation metadata concept)
A pulmonary function test that measures lung volumes	Preferred (foundation metadata concept)
A pulse with repeated irregularity	Preferred (foundation metadata concept)
A puncture action done to intentionally and non-transiently alter the body structure.	Preferred (foundation metadata concept)
A puncture into a space with an aspiration of that space	Preferred (foundation metadata concept)
A pure form of hereditary spastic paraplegia with a childhood or adolescent onset of slowly progressive, pure crural muscle spastic paraparesis which manifests with mild lower limb weakness, gait difficulties, extensor plantar responses, and hyperreflexia of lower extremities. Less common manifestations reported include cerebellar oculomotor disturbance with saccadic eye pursuit, pes cavus and scoliosis. Some patients also present pin and vibration sensory loss in distal legs. The disease is caused by homozygous or compound heterozygous mutation in the DDHD1 gene on chromosome 14q22.	Preferred (foundation metadata concept)
A pure form of hereditary spastic paraplegia with a childhood to adulthood-onset of slowly progressive lower limb spasticity and hyperreflexia of lower extremities, extensor plantar reflexes, distal sensory impairment, variable urinary dysfunction and pes cavus. The disease is caused by heterozygous mutation in the RTN2 gene on chromosome 19q13.	Preferred (foundation metadata concept)
A pure form of hereditary spastic paraplegia with a childhood to adulthood-onset of slowly progressive spastic gait, extensor plantar responses, brisk tendon reflexes in arms and legs, decreased vibration sense at ankles and urinary dysfunction. Ankle clonus is also reported in some patients.	Preferred (foundation metadata concept)
A pure form of hereditary spastic paraplegia with characteristics of a slowly progressive and relatively benign spastic paraplegia presenting in adulthood with spastic gait, lower limb hyperreflexia, extensor plantar responses, bladder dysfunction (urinary urgency and/or incontinence), and mild sensory and motor peripheral neuropathy.	Preferred (foundation metadata concept)
A pure form of hereditary spastic paraplegia with characteristics of adult onset of crural spastic paraparesis, hyperreflexia, extensor plantar responses, proximal muscle weakness, mild muscle atrophy, decreased vibration sensation at ankles and mild urinary dysfunction. Foot deformities have been reported to eventually occur in some patients. No abnormalities are noted on brain magnetic resonance imaging and peripheral nerve conduction velocity studies.	Preferred (foundation metadata concept)
A pure form of hereditary spastic paraplegia with characteristics of slowly progressive spastic paraplegia of lower extremities with an age of onset ranging from childhood to adulthood and patients presenting with spastic gait, increased tendon reflexes in lower limbs, extensor plantar response, weakness and atrophy of lower limb muscles and, in rare cases, pes cavus. No abnormalities are noted on magnetic resonance imaging.	Preferred (foundation metadata concept)
A pure form of hereditary spastic paraplegia with late childhood to early adulthood-onset of slowly progressive spastic paraplegia with spastic gait and lower limb hyperreflexia, brisk tendon reflexes and ankle clonus. Lower limb pain and reduced lower limb vibratory sense is also reported in some older adult patients.	Preferred (foundation metadata concept)
A pure form of hereditary spastic paraplegia with onset in adolescence or early adulthood of slowly progressive spastic paraplegia, proximal muscle weakness of the lower extremities and small hand muscles, hyperreflexia, spastic gait and mild urinary compromise.	Preferred (foundation metadata concept)
A pure motor axonal form of Guillain-Barré syndrome that presents with rapid onset of muscle weakness and absent reflexes. The clinical course tends to be more severe than in the more frequent, demyelinating form of Guillain-Barré syndrome. In the majority of cases, this disease occurs following Campylobacter jejuni infection, in particular following infection with strains of C jejuni that cause enteritis.	Preferred (foundation metadata concept)
A pure or complex form of hereditary spastic paraplegia with characteristics of a childhood to adulthood onset of slowly progressive lower limb spasticity resulting in gait disturbances, hyperreflexia and extensor plantar responses, that may be associated with complicating signs, such as upper limb involvement, sensory neuropathy, ataxia (such as mild dysmetria, uncoordinated eye movement) and mild dysphagia. Additional symptoms, including urinary urgency and/or incontinence, muscle weakness, decreased vibration sense and mild muscular atrophy in lower extremities, may also be associated. Caused by heterozygous mutation in the WASHC5 gene on chromosome 8q24.	Preferred (foundation metadata concept)
A pure or complex form of hereditary spastic paraplegia with characteristics of onset in the first decade of life of spastic paraparesis (more prominent in lower than upper extremities) and unsteady gait, as well as increased deep tendon reflexes, amyotrophy, cerebellar ataxia and flexion contractures of the knees in some.	Preferred (foundation metadata concept)
A purposeful and often repeated attempt to leave a healthcare setting.	Preferred (foundation metadata concept)
A quality of care determination performed retrospectively	Preferred (foundation metadata concept)
A radiographic technique used for showing true dimensions by moving a narrow orthogonal beam of x-rays along the length of the structure being measured.	Preferred (foundation metadata concept)
A raised, erythematous papule or cutaneous plaque, usually representing short-lived dermal edema.	Preferred (foundation metadata concept)
A rare B-cell non-Hodgkin lymphoma characterized by the presence of small B-lymphocytes, plasmacytoid lymphocytes and plasma cells, and either non-secreting or secreting IgG or IgA paraproteins. The disease usually involves the bone marrow and sometimes also the spleen or lymph nodes. Patients typically present with symptoms related to anemia. Hyperviscosity, autoimmune phenomena and B symptoms may also be observed. Mortality is higher as compared to Waldenström macroglobulinemia.	Preferred (foundation metadata concept)
A rare Huntington disease-like syndrome with characteristics of childhood-onset progressive neurologic deterioration with pyramidal and extrapyramidal abnormalities, chorea, dystonia, ataxia, gait instability, spasticity, seizures, mutism, and (on brain MRI) progressive frontal cortical atrophy and bilateral caudate atrophy.	Preferred (foundation metadata concept)
A rare PIK3CA (phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) related overgrowth syndrome disease with characteristics of segmental and progressive overgrowth, predominantly involving the adipose tissue, or a mixture of adipose and fibrous tissue, with variable involvement of subcutaneous and muscular tissue, as well as skeletal overgrowth. Overgrowth severity and range is highly variable although frequently it is asymmetric and disproportionate, it affects lower extremities more than the upper ones and progresses in a distal to proximal patten. Congenital overgrowth is typically associated.	Preferred (foundation metadata concept)
A rare X-linked cerebellar ataxia with characteristics of a combination of upper and lower motor neuron signs, with an age of onset in the first or second decade, slow progression, and normal intelligence. Typical features of cerebellar dysfunction include gait and limb ataxia, intention tremor, dysmetria, dysdiadochokinesia, dysarthria, nystagmus, and hyperreflexia. Further phenotypic features are pes cavus, scoliosis, muscle atrophy, and peripheral sensory and motor nerve abnormalities.	Preferred (foundation metadata concept)
A rare X-linked genetic epilepsy syndrome affecting females. The syndrome has characteristics of seizures starting in the first years of life and intellectual disability and may resemble Dravet syndrome. In families with this disease, male carriers are unaffected despite the X-linked inheritance.	Preferred (foundation metadata concept)
A rare X-linked genomic disorder associated with interstitial chromosomal duplications at Xq28 encompassing the MECP2 gene. In males the disease has characteristics of infantile onset hypotonia, severe global developmental delay, intellectual disability, progressive spasticity, seizures, gastrointestinal symptoms and recurrent respiratory infections. In females, the phenotype is more variable. The syndrome is due to Xq28 duplications (< 4 Mb) involving the dosage-sensitive gene MECP2. The pattern of inheritance is X-linked. The recurrence risk is significant if the duplication encompassing the MECP2 gene is inherited from the mother, but very low if the duplication is de novo. There is full disease penetrance in males and variable penetrance in females due to the level and type of X-inactivation.	Preferred (foundation metadata concept)
A rare X-linked inherited type of ocular albinism described in one African kindred (7 males over 3 generations) to date with characteristics of severe visual impairment, translucent pale-blue irides, a reduction in the retinal pigment and moderately severe deafness by middle age (fourth to fifth decade of life). It is unclear whether it is allelic to X-linked recessive ocular albinism or a contiguous gene syndrome.	Preferred (foundation metadata concept)
A rare X-linked intellectual disability syndrome characterized by intellectual disability (with severe speech impairment), a myxedematous appearance, dysmorphic facial features (including large head, synophrys, prominent supraorbital ridges, almond-shaped and deep-set eyes, large ears, wide mouth with everted lower lip and downturned lip corners), low posterior hairline, short, broad neck, marked general hirsutism and abnormal hair whorls, skin changes (e.g. dry skin or hypopigmented spots), widely spaced nipples, obesity, micropenis, onychodystrophy and seizures. Caused by mutation in the UBE2A gene on chromosome Xq24.	Preferred (foundation metadata concept)
A rare X-linked intellectual disability syndrome characterized by onset in infancy of delayed motor and speech milestones, generalized tonic-clonic seizures and drop attacks and mild to moderate intellectual disability. Additional less common manifestations include scoliosis, ataxia (resulting in progressive gait disturbance) and bilateral pes planovalgus. Physical appearance is normal with no dysmorphic features reported.	Preferred (foundation metadata concept)
A rare X-linked intellectual disability syndrome with characteristics of intellectual disability associated with short stature, obesity, primary hypogonadism and an ichthyosiform skin condition. There have been no further descriptions in the literature since 1982.	Preferred (foundation metadata concept)
A rare X-linked intellectual disability syndrome with characteristics of psychomotor delay, intellectual deficit, hydrocephalus, and mild facial anomalies. Prevalence is unknown, but the syndrome was originally described in a large Scottish family. Mutations in the AP1S2 gene (Xp22), coding for a subunit of the clathrin-associated adaptor protein complex involved in intracellular protein trafficking and synaptic vesicle recycling, have been identified in seven families.	Preferred (foundation metadata concept)
A rare X-linked multiple congenital anomalies/dysmorphic malformation-intellectual disability syndrome with characteristics of developmental delay, mild to moderate intellectual disability, speech disturbance, behavioral problems (such as anxiety, hyperactivity, and aggressiveness) and mild facial dysmorphism (including facial hypotonia, thin arched eyebrows, ectropion, epicanthus, malar flatness, thick vermillion of the lips and prognathia). Additional variable manifestations include short stature, skeletal and genital anomalies, seizures and autism spectrum disorders. Brain imaging may reveal cerebellar vermis hypoplasia, thin corpus callosum, and enlarged subarachnoid spaces.	Preferred (foundation metadata concept)
A rare X-linked syndromic intellectual disability disease with characteristics of neonatal hypertonia which evolves to hypotonia and an exaggerated startle response (to sudden visual, auditory or tactile stimuli), followed by the development of early-onset, frequently refractory, tonic or myoclonic seizures. Progressive epileptic encephalopathy, intellectual disability, and psychomotor development arrest, with subsequent decline, may be additionally associated. There is the disease is caused by mutation in the ARHGEF9 gene on chromosome Xq22.1.	Preferred (foundation metadata concept)
A rare X-linked syndromic intellectual disability disorder with characteristics of profound intellectual disability, global developmental delay with absent speech, seizures, large joint contractures, abnormal position of thumbs and middle-age onset of cardiomegaly and atrioventricular valve abnormalities, resulting in subsequent congestive heart failure. Additional features include variable facial dysmorphism (notably large ears with over folded helix) and large testes. There is evidence the disease is caused by mutation in the CLIC2 gene on chromosome Xq28.	Preferred (foundation metadata concept)
A rare X-linked syndromic intellectual disability which in symptomatic, female carriers has characteristics of a highly variable phenotype including facial dysmorphism (prominent forehead, hypertelorism, down-slanting palpebral fissures, epicanthic folds, thick lips with everted lower vermilion, thick nasal alae and septum), short hands with tapering fingers, short stature and skeletal findings (progressive kyphoscoliosis). Intellectual disability is mild to moderate, but intellect can also be normal. A high rate of psychiatric disorders has also been reported.	Preferred (foundation metadata concept)
A rare X-linked syndromic intellectual disability with characteristics of developmental delay and intellectual disability, early hypotonia, constipation, feeding problems, imperforate anus, characteristic behavior (affable, eager to please) and dysmorphic craniofacial features (such as relative macrocephaly, prominent forehead with frontal hair upsweep, hypertelorism, downslanting palpebral fissures and open mouth). Additional manifestations are partial agenesis of the corpus callosum, sensorineural hearing loss, joint laxity, cardiac anomalies and abnormalities of the fingers and toes among others. Caused by mutation in the MED12 gene on chromosome Xq13.	Preferred (foundation metadata concept)
A rare X-linked syndromic intellectual disability with characteristics of global development delay, postnatal growth retardation leading to short stature, facial dysmorphism, short hands with tapering fingers and progressive skeletal abnormalities including kyphoscoliosis and pectus carinatum/excavatum. Severe clinical presentation was reported in the first male patients described. Following the wide application of molecular genetic testing, the phenotype is now recognized as very variable. Caused by pathogenic variations in the RPS6KA3 gene (Xp22.2-p22.1), which encodes ribosomal protein S6 kinase alpha-3, a growth-factor-regulated protein kinase. An X-linked dominant disorder, about two-thirds of cases occur de novo. Male offspring inheriting the mutation are affected and female carriers can be unaffected or show milder phenotypes.	Preferred (foundation metadata concept)
A rare X-linked syndromic intellectual disability with characteristics of intellectual disability of variable degree, behavioral anomalies (including autism, mood disorders, obsessive-compulsive behavior, hetero and autoaggression) and epilepsy. Progressive neurological symptoms like movement disorders and spasticity along with subtle dysmorphic features have also been reported. Heterozygous females may be as severely affected as males.	Preferred (foundation metadata concept)
A rare Y chromosome number anomaly that affects only males. The disease has characteristics of mild-moderate developmental delay (especially speech), normal to mild intellectual disability, large, irregular teeth with poor enamel, tall stature and acne. Radioulnar stenosis and clinodactyly have also been associated. Boys generally present normal genitalia, while hypogonadism and infertility is frequently reported in adult males.	Preferred (foundation metadata concept)
A rare Y chromosome number anomaly with a variable phenotype. The main characteristics of this disorder are moderate to severe intellectual disability, speech delay, hypotonia and mild dysmorphic features, including facial asymmetry, hypertelorism, bilateral low set 'lop' ears, and micrognathia. Skeletal abnormalities (such as skull deformities, radioulnar synostosis, elbow flexion, clinodactyly, brachydactyly) have also been associated with this condition. Genitalia are normal at birth, although hypogonadism and azoospermia has been reported in adults.	Preferred (foundation metadata concept)
A rare acquired aplastic anemia characterized by a severe normocytic anemia with normal peripheral leukocyte and platelet counts, reticulocytopenia, high serum ferritin and transferrin saturation levels and isolated, almost complete absence of erythroblasts in the bone marrow with normal granulopoiesis and megakaryopoiesis. It presents with signs of severe anemia (fatigue, lethargy, pallor, intolerance of physical exercise and exertional dyspnea) in the absence of hemorrhagic symptoms.	Preferred (foundation metadata concept)
A rare acquired dermal elastic tissue disorder characterized by multiple, 2-3 millimeter sized, non-confluent, asymptomatic, white or pale-colored, non-follicular, firm papular lesions occurring predominantly on the lateral or posterior aspects of the neck. Other, rarely reported sites include inferior axillae, central mid-back and upper sternal region.	Preferred (foundation metadata concept)
A rare acquired dermis elastic tissue disorder characterized by asymptomatic palpable hypertrophic or atrophic, yellowish or red, indurated, horizontal, striae-like linear plaques distributed symmetrically across the mid and lower back. No systemic involvement has been described. Skin biopsy reveals a focal increase in abnormal elastic tissue with abundant wavy, fragmented and aggregated basophilic elastic fibers in the reticular dermis.	Preferred (foundation metadata concept)
A rare acquired dermis elastic tissue disorder characterized by multiple, asymptomatic firm well-demarcated nonfollicular hypopigmented or skin-colored papules, with a diameter of less than 1 cm, distributed symmetrically over trunk and/or proximal limbs (rarely, head, neck, shoulders, armpits, thighs) and with no extracutaneous manifestations. Histopathology typically reveals decreased and fragmented elastic fibers, thickened and/or homogenized collagen bundles and in some a mild perivascular lymphocytic infiltrate in the dermis.	Preferred (foundation metadata concept)
A rare acquired dermis elastic tissue disorder with characteristics of a pseudoxanthoma elasticum-like papular eruption consisting of multiple, slowly progressive, asymptomatic, 2-5 mm, white to yellowish, non-follicular papules (that tend to form cobblestone plaques) predominantly distributed over the neck, axillae and flexural areas, with no systemic involvement. Skin biopsy reveals a focal increase of normal-appearing elastic tissue in the reticular dermis with no calcium deposits.	Preferred (foundation metadata concept)
A rare acquired dermis elastic tissue disorder with decreased elastic tissue characterized by multiple, asymptomatic, well demarcated, flat, hypopigmented atrophic macular skin lesions distributed over upper trunk and proximal upper limbs. Histopathological examination reveals atrophic epidermis with decreased basal pigmentation, perivascular mononuclear infiltration in the upper dermis, and disorganized, hyalinized, coarse collagen bundles and variable loss of elastic fibers in the dermis.	Preferred (foundation metadata concept)
A rare acquired disorder with characteristics of unilateral slowly progressive atrophy of the skin and soft tissues of half of the face leading to a sunken appearance. Muscles, cartilage and the underlying bony structures may also be involved. Usually presents during the first 20 years of life and may start with alopecia, hair hypopigmentation, and atrophy. May extend to the upper lip and or one side of the tongue and the masticatory muscles, resulting in deviation of the nose and or mouth toward the affected side. Rarely both sides of the face and the skin on the arms/trunk/leg or the entire body may be involved. Autoimmunity may be a cause along with facial or head trauma, meningoencephalitis, abnormal development or hyperactivity of the sympathetic nervous system, neuro-vasculitis, angiogenesis anomalies, and slow viral infections. Sporadic but rare familial cases have been reported.	Preferred (foundation metadata concept)
A rare acquired eye disease due to long-term exposure to chloroquine or hydroxychloroquine with characteristics of slowly progressive usually non-reversible, development of bilateral atrophic bull's-eye maculopathy (progressive loss of central vision acuity, reduced color vision and central scotoma), which in severe cases can spread over the entire fundus, leading to widespread retinal atrophy and visual loss.	Preferred (foundation metadata concept)
A rare acquired eye disease due to long-term exposure to chloroquine or hydroxychloroquine with slowly progressive, usually non-reversible, development of bilateral atrophic bull's-eye maculopathy (progressive loss of central vision acuity, reduced color vision and central scotoma), which in severe cases can spread over the entire fundus, leading to widespread retinal atrophy and visual loss.	Preferred (foundation metadata concept)
A rare acquired eye disease with characteristics of progressive visual loss due to bilateral juxta foveolar capillary occlusions, capillary telangiectasia and minimal exudation. It is associated with systemic or cerebral vascular occlusive disease.	Preferred (foundation metadata concept)
A rare acquired eye disease with characteristics of unilateral (rarely bilateral) abnormally dilated and tortuous capillaries around the fovea, associated with multiple arteriolar and venular aneurysms, lipid depositions, and intra-retinal cystoid degeneration. It leads to vision loss due to macular edema with hard exudates.	Preferred (foundation metadata concept)
A rare acquired eye disease with characteristics of unilateral or bilateral abnormal fluid accumulation within the suprachoroidal space. This results in internal choroidal elevation in the absence of any known cause such as decreased intraocular tension, intraocular neoplasm, intraocular inflammation or nanophthalmos. Patients typically present a protracted, relapsing-remitting course of visual acuity loss and fundus examination shows annular celio-choroidal detachment and shifting, serous retinal detachment.	Preferred (foundation metadata concept)
A rare acquired idiopathic dermal tissue disorder characterized by numerous asymptomatic 2-3 millimeter yellowish, non-follicular papules that tend to converge into cobblestone-like plaques. The plaques are distributed symmetrically over the posterior neck, supraclavicular region, axillae, and sometimes abdomen. Unlike pseudoxanthoma elasticum, these skin lesions show select elimination (absence or marked loss) of elastic fibers in the papillary dermis and there is no systemic involvement.	Preferred (foundation metadata concept)
A rare acquired immunodeficiency disease with characteristics of adult-onset absolute neutrophil counts less than 1.5 x 10^9/L on at least 3 occasions in a 3 month period that cannot be attributable to drugs or a specific genetic, infectious, inflammatory, autoimmune or malignant cause. Recurrent apthous stomatitis and a history of mild bacterial infections are typically associated. A benign outcome with a low rate of severe infections and no secondary malignancies is observed.	Preferred (foundation metadata concept)
A rare acquired immunodeficiency disorder characterized by the appearance of susceptibility to disseminated opportunistic infections (in particular, disseminated nontuberculous mycobacterial infection, salmonellosis, penicillosis, and varicella zoster virus infection) in previously healthy (HIV-negative) adults, associated with the presence of acquired autoantibodies to interferon gamma. Typical clinical manifestation includes lymphadenopathy (cervical or generalized), fever, weight loss and/or reactive skin lesions.	Preferred (foundation metadata concept)
A rare acquired localized lipodystrophy disorder characterized by the eruption of tender occasionally painful, erythematous nodules and plaques, which enlarge radially and resolve into lipoatrophic lesions, often located in the upper and lower limbs. Histologically lesions are characterized by lipophagic lobular panniculitis and absence of vasculitis.	Preferred (foundation metadata concept)
A rare acquired motor neuron disease with characteristics of a slowly progressive unilateral ascending or descending hemiplegia, associated with unilateral or asymmetrical pyramidal signs and no sensory loss. It is a diagnosis of exclusion and controversy exists regarding whether the presence of bulbar symptoms, sphincter disturbances, fasciculations or cognitive manifestations are characteristics of the disease.	Preferred (foundation metadata concept)
A rare acquired neurological disease with characteristics of encephalopathy associated with elevated antithyroid antibodies, in the absence of other causes. Clinical presentation varies from minor cognitive impairment to status epilepticus and coma, and frequently includes seizures, confusion, speech disorder, memory impairment, ataxia and psychiatric manifestations.	Preferred (foundation metadata concept)
A rare acquired neuromuscular disease characterized by CAV3 mutation-negative rippling muscle disease in association with acetylcholine receptor antibody-mediated myasthenia gravis. Patients typically present exercise-induced, electrically silent muscle rippling with myalgia, in combination with generalized myasthenia gravis symptoms (ptosis, diplopia, neck weakness, dysphagia and dyspnea).	Preferred (foundation metadata concept)
A rare acquired non-paraneoplastic limbic encephalitis disorder, that develops in the setting of treatment-related immunosuppression, typically after allogeneic hemapoietic stem cell transplantation. Characterized by onset of confusion, headache, anterograde amnesia, seizures and/or loss of consciousness 2-6 weeks following transplantation. Bilateral, non-enhancing T2 hyperintensities in limbic structures are observed on magnetic resonance imaging. Mild cerebrospinal fluid pleocytosis and syndrome of inappropriate antidiuretic hormone secretion may also be associated.	Preferred (foundation metadata concept)
A rare acquired ocular disease with characteristics of migratory or non-migratory horizontal linear stromal infiltrates that may heal spontaneously. Minimal vascularization and scarring may be observed but vision loss is not associated.	Preferred (foundation metadata concept)
A rare acquired peripheral neuropathy disease with characteristics of progressive oropharyngeal (facial palsy, dysarthria) and cervicobrachial weakness, associated with upper limb weakness and hypo/areflexia in the absence of ophthalmoplegia, ataxia, altered consciousness, and prominent lower limb weakness. The presence of monospecific IgG anti-GT1a antibodies is associated.	Preferred (foundation metadata concept)
A rare acquired peripheral neuropathy with characteristics of paresis of the supraspinatus, infraspinatus, deltoid and biceps muscles (in C5-C6 injury), wrist and finger extensor muscles (C7 injury), or impaired hand function (C8-Th1 injury) on the affected side due to a traction lesion of the brachial plexus during delivery. The upper trunk of the brachial plexus is most commonly affected, while isolated injury to the lower trunk is very rare. Potential sequelae of brachial plexus injury are muscle atrophy, pain, sensory deficits and secondary deformities.	Preferred (foundation metadata concept)
A rare acquired peripheral neuropathy with characteristics of progressive, involuntary, irregular, clonic or tonic contractions of the muscles innervated by the facial nerve (cranial nerve VII). The symptoms are typically strictly unilateral, mostly persist during sleep, and often occur in the region of the orbicularis oculi muscle first and gradually spread to other parts of the affected half of the face as the disease progresses.	Preferred (foundation metadata concept)
A rare acquired peripheral neuropathy with characteristics of symptoms arising from combined overactivity in cranial nerves, without any explanatory structural lesion. The symptoms may be unilateral or bilateral, may occur synchronously or metachronously and include trigeminal neuralgia, hemifacial spasm and glossopharyngeal neuralgia.	Preferred (foundation metadata concept)
A rare acquired pituitary hormone deficiency a type of primary hypophysitis with characteristics of inflammation of anterior pituitary. Clinical presentation is variable and includes headaches, visual disturbances, and symptoms of adrenal insufficiency, hyperprolactinemia, hypothyroidism and hypogonadism. It most commonly affects young women during pregnancy or postpartum period.	Preferred (foundation metadata concept)
A rare acquired pituitary hormone deficiency a type of primary hypophysitis with characteristics of inflammation of the entire pituitary gland. Common clinical presentation is diabetes insipidus with polyuria and polydipsia and partial or panhypopituitarism. Other symptoms may include headaches, nausea/vomiting, visual disturbances and fatigue.	Preferred (foundation metadata concept)
A rare acquired pituitary hormone deficiency characterized by combination of headache, visual field defects that correlate with cyst size and pituitary dysfunction. Most frequent hormonal manifestations are hypogonadism with amenorrhea/impotence or low libido and galactorrhea.	Preferred (foundation metadata concept)
A rare acquired pituitary hormone deficiency characterized by the presence of rare benign tumor in the sellar region. Clinical presentation is either acute or insidious and is variable according to the cyst location, size and potential rupture. Most commonly patients present with headache, visual disturbances and pituitary dysfunction.	Preferred (foundation metadata concept)
A rare acquired pituitary hormone deficiency with characteristics of secondary adrenal insufficiency with normal secretion of anterior pituitary hormones, except for adrenocorticotropic hormone (ACTH). Patients present with weakness, fatigue, weight loss, anorexia, vomiting/nausea, hypoglycemia and abnormally low serum ACTH and cortisol levels. Association with autoimmune disease such as Hashimoto's thyroiditis has been described.	Preferred (foundation metadata concept)
A rare acquired pituitary hormone deficiency, a type of primary hypophysitis characterized by an inflammation of the posterior pituitary and the stalk. The major clinical manifestation is diabetes insipidus with polyuria and polydipsia. Less frequent symptoms are headaches, adrenal insufficiency, hyperprolactinemia and hypogonadism.	Preferred (foundation metadata concept)
A rare acquired retinal disorder with characteristics of transient or permanent visual impairment accompanied by the presence of reddish-brown, wedge-shaped lesions in the macula, the apices of which tend to point towards the fovea. The lesions usually appear in a petaloid or tear-drop configuration. Patients tend to be young, Caucasian and female.	Preferred (foundation metadata concept)
A rare acquired retinal disorder with characteristics of unilateral acute onset rapidly progressive visual field loss. Sometimes patients have photopsia and complain of floaters. Typical ophthalmoscopic finding is a unilateral, yellowish-white annular intraretinal line, splitting the retinal field to affected outer retina with thinning and normal retina. Gradual spontaneous visual recovery has been observed.	Preferred (foundation metadata concept)
A rare acquired skin disease characterized by benign proliferation of mature plasma cells with a typical triad of cutaneous lesions, polyclonal hypergammaglobulinemia and superficial lymphadenopathy without an apparent underlying cause. The skin lesions consist of multiple round-to-oval, red-to-dark-brown macules, papules and plaques most commonly found on the trunk but also the face, neck, and axilla.	Preferred (foundation metadata concept)
A rare acquired subepidermal autoimmune bullous disease with characteristics of polymorphic cutaneous lesions (blisters, urticarial lesions or scars/milia) associated with immunoglobulin G deposition in the basement membrane zone. Lesions are frequently localized on extremities, trunk, palmoplantar and cephalic areas as well as mucous membranes. The disease predominantly affects elderly people. The exact etiology is unknown but may be related to laminin gamma-1, consistent with the identified characteristics of the p200 protein (an acidic non-collagenous N-linked glycoprotein localized within the lower lamina lucida outside of hemidesmosomes).	Preferred (foundation metadata concept)
A rare acute leukemia of ambiguous lineage characterized by clonal proliferation of primitive hematopoietic cells, primarily in the bone marrow and blood, lacking lineage-specific markers and detectable genotypic alterations. The patient presents with leukocytosis, anemia, variable platelet count and a variety of nonspecific symptoms related to ineffective hematopoesis (fatigue, bleeding and bruising, recurrent infections, bone pain) and/or extramedullary site involvement (lymphadenopathy, splenomegaly, hepatomegaly).	Preferred (foundation metadata concept)
A rare acute myeloid leukemia (AML) with recurrent genetic anomaly characterized by the presence of bone marrow and peripheral blood myeloblasts with features ranging from those of minimal differentiation to granulocytic maturation, demonstrating t(9;22)(q34.1;q11.2) or molecular genetic evidence of BCR-ABL1 fusion. Evidence of chronic myeloid leukemia (CML) is absent. Patients most commonly present with leukocytosis with blast predominance and variable anemia and thrombocytopenia. Splenomegaly is less frequent and peripheral blood basophilia lower than in patients with myeloid blast transformation of CML. The disease occurs primarily in adults, and response to traditional AML therapy or tyrosine kinase inhibitor therapy alone is typically poor.	Preferred (foundation metadata concept)
A rare aggressive B-cell non-Hodgkin lymphoma with characteristics of rearrangement in MYC and BCL2 and/or BCL6 (so-called double-hit or triple-hit lymphoma). The category includes double-hit cases with features intermediate between diffuse large B-cell lymphoma (DLBCL) and Burkitt lymphoma, blastoid cases with a double-hit, and cases with a DLBCL not otherwise specified morphology with a double-hit. It refers only to de novo cases, not to lymphomas with a history of pre-existing or coexistent indolent lymphoma. Patients typically present with widespread disease, including involvement of lymph nodes, bone marrow and central nervous system.	Preferred (foundation metadata concept)
A rare aggressive malignant hepatic tumor arising from the hepatocytes. It develops mainly in children over 10 years of age, either in a cirrhotic background, or more commonly in a non-cirrhotic background. The main presenting manifestations are abdominal mass with pain, swelling and discomfort, weight loss, and anorexia. Splenomegaly, nausea, vomiting and jaundice are less commonly observed. Metastases to the mediastinal lymph nodes, lungs, brain and bone marrow are common in advanced disease May be associated with congenital diseases such as biliary atresia. The Wnt/beta-catenin pathway is frequently activated via stabilizing mutations in beta-catenin: some patients have been found to have mutations in the CTNNB1 (3p21) and MET (7q31) genes. TP53 (17p13.1) gene and the TERT promoter are mutated in 25-30% and 60% of cases respectively.	Preferred (foundation metadata concept)

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Reference Sets

Reference set descriptor

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Id	Description	Lang	Type	Status	Case?	Module
900000000001115012	United States of America English language reference set	en	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT model component module (core metadata concept)
900000000001116013	US English	en	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT model component module (core metadata concept)
900000000001117016	United States of America English language reference set (foundation metadata concept)	en	Fully specified name	Active	Entire term case sensitive (core metadata concept)	SNOMED CT model component module (core metadata concept)