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
What this means — in plain language
MedlinePlus · NIHWhat is encephalitis? Encephalitis is inflammation (swelling) of the brain. It can happen when an infection or medical condition that affects the brain activates your immune system. The inflammation can cause a wide range of symptoms. In extreme cases, it can lead to brain damage, stroke , or even death. What causes encephalitis? There are different types of encephalitis, based on what the cause is. The two main…
Read more about Encephalitis at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
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)
Medications indicated for this condition
FDA labelingDrugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
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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