Is G13.2 a billable ICD-10-CM code?

Yes. G13.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does G13.2 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).

G13.2

G13.2 — Systemic atrophy primarily affecting the central nervous system in myxedema

Billable / specific codeICD-10-CM

G13.2 is a billable, specific ICD-10-CM code for systemic atrophy primarily affecting the central nervous system in myxedema. It is valid for submission on a claim.

Code first

The underlying condition must be sequenced before this code.

underlying disease, such as:
hypothyroidism (E03.-)
myxedematous congenital iodine deficiency (E00.1)

Other codes that can never be billed with G13.2

These codes carry an Excludes1 note pointing at G13.2. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G13.2 alone.

G32.81Cerebellar ataxia in diseases classified elsewhere

Risk adjustment

G13.2 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

G13.2 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
A56612Billing and Coding: CT of the Head
A57204Billing and Coding: MRI and CT Scans of the Head and Neck
A57780Billing and Coding: Psychological and Neuropsychological Tests

Related codes at this level

Codes that share G13. If G13.2 is not quite right, the correct code is usually one of these.

Questions about G13.2

Is G13.2 a billable ICD-10-CM code?: Yes. G13.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does G13.2 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).