G05
Non-billableEncephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
G05 is the ICD-10-CM code for Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere. It is a non-billable category code — use a more specific child code such as G05.3 for billing.
- Status
- Header (non-billable)
- Chapter
- G00-G99
- Subcodes
- 2
- Edition
- FY2026
G00-G99 Diseases of the nervous system
Excludes1 — not coded here
- •adenoviral encephalitis, myelitis and encephalomyelitis (A85.1)
- •encephalitis, myelitis and encephalomyelitis (in) measles (B05.0)
- •enteroviral encephalitis, myelitis and encephalomyelitis (A85.0)
- •herpesviral [herpes simplex] encephalitis, myelitis and encephalomyelitis (B00.4)
- •listerial encephalitis, myelitis and encephalomyelitis (A32.12)
- •meningococcal encephalitis, myelitis and encephalomyelitis (A39.81)
- •mumps encephalitis, myelitis and encephalomyelitis (B26.2)
- •postchickenpox encephalitis, myelitis and encephalomyelitis (B01.1-)
- •rubella encephalitis, myelitis and encephalomyelitis (B06.01)
- •toxoplasmosis encephalitis, myelitis and encephalomyelitis (B58.2)
- •zoster encephalitis, myelitis and encephalomyelitis (B02.0)
Code first
- •underlying disease, such as:
- •congenital toxoplasmosis encephalitis, myelitis and encephalomyelitis (P37.1)
- •cytomegaloviral encephalitis, myelitis and encephalomyelitis (B25.8)
- •encephalitis, myelitis and encephalomyelitis (in) systemic lupus erythematosus (M32.19)
- •eosinophilic meningoencephalitis (B83.2)
- •human immunodeficiency virus [HIV] disease (B20)
- •poliovirus (A80.-)
- •suppurative otitis media (H66.01-H66.4)
- •systemic lupus erythematosus (M32.19)
- •trichinellosis (B75)
Frequently asked questions
- What is ICD-10 code G05?
- G05 is the ICD-10-CM code for "Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere". It falls under G00-G99 Diseases of the nervous system.
- Is G05 a billable code?
- No — G05 is a non-billable header code. Use a more specific child code (such as G05.3) for billing.
- What is excluded from G05?
- Excludes1 (not coded here): adenoviral encephalitis, myelitis and encephalomyelitis (A85.1); encephalitis, myelitis and encephalomyelitis (in) measles (B05.0); enteroviral encephalitis, myelitis and encephalomyelitis (A85.0); herpesviral [herpes simplex] encephalitis, myelitis and encephalomyelitis (B00.4).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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