| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Overlapping malignant neoplasm of biliary tract | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 5 | 
| Overlapping malignant neoplasm of retroperitoneum and peritoneum | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Overlapping malignant neoplasm of urinary system | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of descended testis | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Overlapping malignant neoplasm of body of uterus | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 3 | 
| Overlapping malignant neoplasm of uterine cervix | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Primary malignant neoplasm of fundus uteri | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 3 | 
| Overlapping malignant neoplasm of vulva | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Overlapping malignant neoplasm of brain and other parts of the central nervous system | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Overlapping malignant neoplasm of brain | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of meninges | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of peripheral nerves and peripheral autonomic nervous system | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Overlapping malignant neoplasm of peripheral nerves and autonomic nervous system | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Primary malignant neoplasm of peripheral nerves of head | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Primary malignant neoplasm of peripheral nerves of face | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of peripheral nerves of neck | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Primary malignant neoplasm of peripheral nerves of shoulder | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of peripheral nerves of hip | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of peripheral nerves of thorax | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of peripheral nerves of pelvis region | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of peripheral nerves of trunk | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Overlapping malignant neoplasm of multiple endocrine glands | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma of tongue base - dorsal surface | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Acute myelofibrosis | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 5 | 
| Acute promyelocytic leukemia, FAB M3 | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 5 | 
| Acute myelomonocytic leukemia, FAB M4 | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 5 | 
| Prolymphocytic leukemia | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Adult T-cell leukemia/lymphoma | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Metastasis to ovary of unknown primary | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastasis to ovary of unknown primary | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 3 | 
| Malignant neoplasm of eyelid | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Squamous cell carcinoma of eyelid | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Basal cell carcinoma of eyelid | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Sebaceous adenocarcinoma of eyelid | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Malignant melanoma of eyelid | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Kaposi's sarcoma of eyelid | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Lymphoma of retina | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Local recurrence of malignant tumor of tongue | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Local recurrence of malignant tumor of buccal cavity | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Pulmonary tumor embolism | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Pulmonary tumor embolism | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Leukemic infiltrate of kidney | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Lymphoma of kidney | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Carcinoid crisis | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Gammopathy | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of base of tongue | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Primary malignant neoplasm of vermilion border of upper lip | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Primary malignant neoplasm of vocal cord | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to adrenal cortex | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to adrenal medulla | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to ampulla of Vater | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to anterior aspect of epiglottis | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to aortic body | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to areola of male breast | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Metastatic malignant neoplasm to body of pancreas | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to carotid body | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to coccygeal body | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to descending colon | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to endocardium | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to epicardium | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to femoral lymph nodes | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to glomus jugulare | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to head of pancreas | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to hepatic flexure of colon | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to hilus of lung | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to hypopharyngeal aspect of aryepiglottic fold | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to hypopharyngeal aspect of interarytenoid fold | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to islets of Langerhans | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to left lower lobe of lung | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to left upper lobe of lung | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to Meckel's diverticulum | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 4 | 
| Metastatic malignant neoplasm to multiple endocrine glands | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to myocardium | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to nipple of male breast | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 2 | 
| Metastatic malignant neoplasm to pancreatic duct | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to para-aortic body | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to paramammary lymph nodes | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to parietal pleura | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to pectoral axillary lymph nodes | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to pericardium | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to postcricoid region | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to posterior hypopharyngeal wall | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to pyriform sinus | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to rectosigmoid junction | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to right lower lobe of lung | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to right middle lobe of lung | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to right upper lobe of lung | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to round ligament of uterus | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 3 | 
| Metastatic malignant neoplasm to sigmoid colon | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to tail of pancreas | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Lymphoproliferative disorder following transplantation | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of anterior pillar of fauces | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of inferior turbinate | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of middle turbinate | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of anterior commissure | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of posterior commissure | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of suprahyoid epiglottis | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of infrahyoid epiglottis | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of arytenoid | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of parapharyngeal space | Associated morphology | False | Malignant neoplasm of primary, secondary, or uncertain origin | Inferred relationship | Existential restriction modifier | 1 |