disposition disease SCTID:64572001 MEDGEN:4347 MONDO:0000001 medical condition condition disease or disorder DOID:4 MESH:D004194 disease or disorder, non-neoplastic ICD9:799.9 diseases disease other disease NCIT:C2991 Orphanet:377788 OGMS:0000031 UMLS:C0012634 disorder disorders diseases and disorders A disease is a disposition to undergo pathological processes that exists in an organism because of one or more disorders in that organism.