| Members | acceptabilityId | 
| Acute inflammatory infiltration | Acceptable (foundation metadata concept) | 
| Acute inflammatory morphology | Preferred (foundation metadata concept) | 
| Acute inflammatory morphology (morphologic abnormality) | Preferred (foundation metadata concept) | 
| Acute inflammatory neuropathy | Acceptable (foundation metadata concept) | 
| Acute inflammatory reaction | Acceptable (foundation metadata concept) | 
| Acute inflammatory transudate | Acceptable (foundation metadata concept) | 
| Acute injury of anterior cruciate ligament | Preferred (foundation metadata concept) | 
| Acute injury of anterior cruciate ligament (disorder) | Preferred (foundation metadata concept) | 
| Acute interstitial nephritis | Acceptable (foundation metadata concept) | 
| Acute intoxication | Preferred (foundation metadata concept) | 
| Acute intoxication (disorder) | Preferred (foundation metadata concept) | 
| Acute ischemic heart disease | Preferred (foundation metadata concept) | 
| Acute ischemic heart disease (disorder) | Preferred (foundation metadata concept) | 
| Acute kidney infection | Acceptable (foundation metadata concept) | 
| Acute kidney injury | Preferred (foundation metadata concept) | 
| Acute kidney injury (disorder) | Preferred (foundation metadata concept) | 
| Acute laryngitis | Preferred (foundation metadata concept) | 
| Acute laryngitis (disorder) | Preferred (foundation metadata concept) | 
| Acute lateral myocardial infarction | Acceptable (foundation metadata concept) | 
| Acute leukemia | Preferred (foundation metadata concept) | 
| Acute leukemia | Preferred (foundation metadata concept) | 
| Acute leukemia (morphologic abnormality) | Preferred (foundation metadata concept) | 
| Acute leukemia, disease | Acceptable (foundation metadata concept) | 
| Acute leukemia, disease (disorder) | Preferred (foundation metadata concept) | 
| Acute leukemia, morphology, including blast cell OR undifferentiated leukemia | Acceptable (foundation metadata concept) | 
| Acute liver failure | Acceptable (foundation metadata concept) | 
| Acute low back pain | Preferred (foundation metadata concept) | 
| Acute low back pain (finding) | Preferred (foundation metadata concept) | 
| Acute lower urinary tract infection | Preferred (foundation metadata concept) | 
| Acute lower urinary tract infection (disorder) | Preferred (foundation metadata concept) | 
| Acute lymphatic leukemia | Acceptable (foundation metadata concept) | 
| Acute lymphatic leukemia, L2 type | Acceptable (foundation metadata concept) | 
| Acute lymphoblastic leukemia | Acceptable (foundation metadata concept) | 
| Acute lymphoblastic leukemia, Burkitt's type | Acceptable (foundation metadata concept) | 
| Acute lymphoblastic leukemia, L2 type | Acceptable (foundation metadata concept) | 
| Acute lymphoblastic leukemia, mature B-cell type | Acceptable (foundation metadata concept) | 
| Acute lymphoblastic leukemia, precursor-cell type | Acceptable (foundation metadata concept) | 
| Acute lymphoblastic leukemia-lymphoma | Acceptable (foundation metadata concept) | 
| Acute lymphocytic leukemia | Acceptable (foundation metadata concept) | 
| Acute lymphocytic leukemia, L2 type | Acceptable (foundation metadata concept) | 
| Acute lymphoid follicular inflammation | Preferred (foundation metadata concept) | 
| Acute lymphoid follicular inflammation (morphologic abnormality) | Preferred (foundation metadata concept) | 
| Acute lymphoid leukemia | Acceptable (foundation metadata concept) | 
| Acute lymphoid leukemia | Preferred (foundation metadata concept) | 
| Acute lymphoid leukemia in remission | Preferred (foundation metadata concept) | 
| Acute lymphoid leukemia in remission (disorder) | Preferred (foundation metadata concept) | 
| Acute lymphoid leukemia, L2 type | Acceptable (foundation metadata concept) | 
| Acute lymphoid leukemia, disease | Acceptable (foundation metadata concept) | 
| Acute lymphoid leukemia, disease (disorder) | Preferred (foundation metadata concept) | 
| Acute mastitis | Preferred (foundation metadata concept) | 
| Acute mastitis (disorder) | Preferred (foundation metadata concept) | 
| Acute maxillary sinusitis | Preferred (foundation metadata concept) | 
| Acute maxillary sinusitis (disorder) | Preferred (foundation metadata concept) | 
| Acute meniscal tear, lateral | Preferred (foundation metadata concept) | 
| Acute meniscal tear, lateral (disorder) | Preferred (foundation metadata concept) | 
| Acute meniscal tear, medial | Preferred (foundation metadata concept) | 
| Acute meniscal tear, medial (disorder) | Preferred (foundation metadata concept) | 
| Acute middle ear effusion | Acceptable (foundation metadata concept) | 
| Acute myeloblastic leukemia with maturation | Acceptable (foundation metadata concept) | 
| Acute myelocytic leukemia | Acceptable (foundation metadata concept) | 
| Acute myelocytic leukemia | Acceptable (foundation metadata concept) | 
| Acute myelocytic leukemia with maturation | Acceptable (foundation metadata concept) | 
| Acute myelogenous leukemia | Acceptable (foundation metadata concept) | 
| Acute myelogenous leukemia with maturation | Acceptable (foundation metadata concept) | 
| Acute myeloid leukemia | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia | Acceptable (foundation metadata concept) | 
| Acute myeloid leukemia (disorder) | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia (morphologic abnormality) | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia in remission | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia in remission (disorder) | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia with maturation | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia with maturation (morphologic abnormality) | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia with maturation, FAB M2 | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia with maturation, FAB M2 (disorder) | Preferred (foundation metadata concept) | 
| Acute myeloid leukemia, disease | Preferred (foundation metadata concept) | 
| Acute myelomonocytic leukemia | Preferred (foundation metadata concept) | 
| Acute myelomonocytic leukemia (clinical) | Acceptable (foundation metadata concept) | 
| Acute myelomonocytic leukemia (morphologic abnormality) | Preferred (foundation metadata concept) | 
| Acute myelomonocytic leukemia, FAB M4 | Preferred (foundation metadata concept) | 
| Acute myelomonocytic leukemia, FAB M4 (disorder) | Preferred (foundation metadata concept) | 
| Acute myocardial infarction | Preferred (foundation metadata concept) | 
| Acute myocardial infarction (disorder) | Preferred (foundation metadata concept) | 
| Acute myocardial infarction of anterior wall | Preferred (foundation metadata concept) | 
| Acute myocardial infarction of anterior wall (disorder) | Preferred (foundation metadata concept) | 
| Acute myocardial infarction of diaphragmatic wall | Acceptable (foundation metadata concept) | 
| Acute myocardial infarction of inferior wall | Preferred (foundation metadata concept) | 
| Acute myocardial infarction of inferior wall (disorder) | Preferred (foundation metadata concept) | 
| Acute myocardial infarction of lateral wall | Preferred (foundation metadata concept) | 
| Acute myocardial infarction of lateral wall (disorder) | Preferred (foundation metadata concept) | 
| Acute nasal catarrh | Acceptable (foundation metadata concept) | 
| Acute nasopharyngitis | Acceptable (foundation metadata concept) | 
| Acute necrosis | Preferred (foundation metadata concept) | 
| Acute necrosis (morphologic abnormality) | Preferred (foundation metadata concept) | 
| Acute non-Q wave infarction | Preferred (foundation metadata concept) | 
| Acute non-Q wave infarction (disorder) | Preferred (foundation metadata concept) | 
| Acute non-ST segment elevation myocardial infarction | Preferred (foundation metadata concept) | 
| Acute non-ST segment elevation myocardial infarction (disorder) | Preferred (foundation metadata concept) | 
| Acute non-lymphocytic leukemia | Acceptable (foundation metadata concept) | 
| Acute non-suppurative serous otitis media | Preferred (foundation metadata concept) | 
| Acute non-suppurative serous otitis media (disorder) | Preferred (foundation metadata concept) | 
| Acute nonsuppurative serous otitis media | Acceptable (foundation metadata concept) |