central nervous system disease meningitis ICD10CM:G03 ICD9CM:322.9 disease_ontology A central nervous system disease that is characterized by an inflammation of the pia-arachnoid meninges. It can be caused by growth of bacteria, fungi, or parasites within the subarachnoid space or by the growth of bacteria or viruses within the meningeal or ependymal cells. NCI:C26828 DOID:9712 UMLS_CUI:C0025289 MESH:D008581 DOID:9471 SNOMEDCT_US_2020_03_01:154983000