Is G11.6 a billable ICD-10-CM code?

Yes. G11.6 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does G11.6 sit in the tabular list?

Diseases of the nervous system (G00-G99), in the block Systemic atrophies primarily affecting the central nervous system (G10-G14).

G11.6

G11.6 — Leukodystrophy with vanishing white matter disease

Billable / specific codeICD-10-CM

G11.6 is a billable, specific ICD-10-CM code for leukodystrophy with vanishing white matter disease. It is valid for submission on a claim.

Excludes2 inherited from the categories above G11.6

Also inherited, and the opposite of Excludes1: these conditions are not part of G11.6, but a patient can have both, so you may code both.

Written on G11 — Hereditary ataxia

cerebral palsy (G80.-)
hereditary and idiopathic neuropathy (G60.-)
metabolic disorders (E70-E88)

Other codes that can never be billed with G11.6

These codes carry an Excludes1 note pointing at G11.6. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G11.6 alone.

R26Abnormalities of gait and mobility
R27Other lack of coordination

Risk adjustment

G11.6 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 200 Friedreich and Other Hereditary Ataxias; Huntington Disease0.279 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

G11.6 is named in 1 Medicare coverage policy — 0 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56562Billing and Coding: Health and Behavior Assessment/Interventionnot covered

How G11.6 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 G11.6.

Leukodystrophy›with vanishing white matter disease

Code history

G11.6 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share G11. If G11.6 is not quite right, the correct code is usually one of these.

Questions about G11.6

Is G11.6 a billable ICD-10-CM code?: Yes. G11.6 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does G11.6 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Systemic atrophies primarily affecting the central nervous system (G10-G14).