ICD-10-CM 2027 · G00-G09

Inflammatory diseases of the central nervous system

Part of chapter 6, diseases of the nervous system.

About G00-G09

Block G00-G09 contains 10 categories and 35 billable codes for FY2027. No codes here changed in the FY2027 update. 31 codes are MCCs and 3 are CCs when reported as secondary diagnoses.

G00Bacterial meningitis, not elsewhere classified

G00.0Hemophilus meningitis
G00.1Pneumococcal meningitis
G00.2Streptococcal meningitis
G00.3Staphylococcal meningitis
G00.8Other bacterial meningitis
G00.9Bacterial meningitis, unspecified

G01Meningitis in bacterial diseases classified elsewhere

G02Meningitis in other infectious and parasitic diseases classified elsewhere

G03Meningitis due to other and unspecified causes

G03.0Nonpyogenic meningitis
G03.1Chronic meningitis
G03.2Benign recurrent meningitis [Mollaret]
G03.8Meningitis due to other specified causes
G03.9Meningitis, unspecified

G04Encephalitis, myelitis and encephalomyelitis

G04.0Acute disseminated encephalitis and encephalomyelitis (ADEM)
G04.1Tropical spastic paraplegia
G04.2Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
G04.3Acute necrotizing hemorrhagic encephalopathy
G04.8Other encephalitis, myelitis and encephalomyelitis
G04.9Encephalitis, myelitis and encephalomyelitis, unspecified

G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

G05.3Encephalitis and encephalomyelitis in diseases classified elsewhere
G05.4Myelitis in diseases classified elsewhere

G06Intracranial and intraspinal abscess and granuloma

G06.0Intracranial abscess and granuloma
G06.1Intraspinal abscess and granuloma
G06.2Extradural and subdural abscess, unspecified