G35 — Multiple sclerosis
G35 is a non-billable header ICD-10-CM code for multiple sclerosis. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with G35
These codes carry an Excludes1 note pointing at G35. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G35 alone.
- G37.3Acute transverse myelitis in demyelinating disease of central nervous system
Risk adjustment
G35 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
G35 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57174Billing and Coding: MolDX: Pharmacogenomics Testing
The condition this code belongs to
Every code for the condition on one page, which one applies when, and the mistake coders make with it.
Code history
What changed, and when. Derived by diffing consecutive CMS release files — which matters when you are defending a code assigned under an earlier edition.
- deletedFY2024-FY2026
Multiple sclerosis
Code to one of these instead G35
4 child codes. Green means billable.
Questions about G35
- Is G35 a billable ICD-10-CM code?
- No. G35 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does G35 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Demyelinating diseases of the central nervous system (G35-G37).