Inflammatory diseases of the central nervous system (G00-G09)
chapter 6: Diseases of the Nervous System
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers default dominant or nondominant side for hemiplegia and monoplegia, and use and sequencing of G89 pain codes, including postoperative, chronic, and neoplasm-related pain.
- Dominant/nondominant side (page 45)
- Pain - Category G89 (page 45)
All codes under G00-G09
G00-G09 can't be used on a claim. Pick a billable code below; grey headings group them.
- 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)
- G04.00Acute disseminated encephalitis and encephalomyelitis, unspecified
- G04.01Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
- G04.02Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
- G04.1Tropical spastic paraplegia
- G04.2Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
- G04.3Acute necrotizing hemorrhagic encephalopathy
- G04.30Acute necrotizing hemorrhagic encephalopathy, unspecified
- G04.31Postinfectious acute necrotizing hemorrhagic encephalopathy
- G04.32Postimmunization acute necrotizing hemorrhagic encephalopathy
- G04.39Other acute necrotizing hemorrhagic encephalopathy
- G04.8Other encephalitis, myelitis and encephalomyelitis
- G04.81Other encephalitis and encephalomyelitis
- G04.82Acute flaccid myelitis
- G04.89Other myelitis
- G04.9Encephalitis, myelitis and encephalomyelitis, unspecified
- G04.90Encephalitis and encephalomyelitis, unspecified
- G04.91Myelitis, 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
- G07Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere
- G08Intracranial and intraspinal phlebitis and thrombophlebitis
- G09Sequelae of inflammatory diseases of central nervous system
G00-G09 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Meningitis
Meningitis is inflammation of the thin tissue that surrounds the brain and spinal cord, called the meninges. There are several types of meningitis. The most common is viral meningitis. You get it when a virus enters the body through the nose or mouth and travels to the brain. Bacterial meningitis is rare but can be deadly. It usually starts with bacteria that cause a cold-like infection. It can cause stroke, hearing loss, and brain damage. It can also harm other organs. Pneumococcal infections and meningococcal infections are the most common causes of bacterial meningitis.
Read more about meningitis on MedlinePlus