G05.3 — Encephalitis and encephalomyelitis in diseases classified elsewhere
G05.3 is a billable, specific ICD-10-CM code for encephalitis and encephalomyelitis in diseases classified elsewhere. It is valid for submission on a claim.
Code first
The underlying condition must be sequenced before this code.
- underlying disease
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Meningoencephalitis in diseases classified elsewhere
Risk adjustment
G05.3 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
G05.3 is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56551Billing and Coding: Visual Fields Testing
- A56771Billing and Coding: Special Electroencephalography
- A56799Billing and Coding: Visual Fields Testing
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
How G05.3 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G05.3.
- Encephalomyelitis›in diseases classified elsewhere
- Meningoencephalitis›in›diseases classified elsewhere
Related codes at this level
Codes that share G05. If G05.3 is not quite right, the correct code is usually one of these.
Questions about G05.3
- Is G05.3 a billable ICD-10-CM code?
- Yes. G05.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G05.3 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Inflammatory diseases of the central nervous system (G00-G09).