G36.9 — Acute disseminated demyelination, unspecified
G36.9 is a billable, specific ICD-10-CM code for acute disseminated demyelination, unspecified. It is valid for submission on a claim.
Risk adjustment
G36.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 198 Multiple Sclerosis0.647 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
G36.9 is named in 11 Medicare coverage policies — 11 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53052Billing and Coding: Home Health Speech-Language Pathology
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A56551Billing and Coding: Visual Fields Testing
- A56612Billing and Coding: CT of the Head
How G36.9 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 G36.9.
- Neuromyelitis
- Demyelination, demyelinization›disseminated, acute
Related codes at this level
Codes that share G36. If G36.9 is not quite right, the correct code is usually one of these.
Questions about G36.9
- Is G36.9 a billable ICD-10-CM code?
- Yes. G36.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G36.9 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Demyelinating diseases of the central nervous system (G35-G37).