Is G13.1 a billable ICD-10-CM code?

Yes. G13.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does G13.1 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).

G13.1

G13.1 — Other systemic atrophy primarily affecting central nervous system in neoplastic disease

Billable / specific codeICD-10-CM

G13.1 is a billable, specific ICD-10-CM code for other systemic atrophy primarily affecting central nervous system in neoplastic disease. It is valid for submission on a claim.

Code first

The underlying condition must be sequenced before this code.

underlying neoplasm (C00-D49)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Paraneoplastic limbic encephalopathy

Risk adjustment

G13.1 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

G13.1 is named in 18 Medicare coverage policies — 17 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.

A57663Billing and Coding: Nerve Blocks for Peripheral Neuropathynot covered
A52996Billing and Coding: Routine Foot Care
A54969Billing and Coding: Nerve Conduction Studies and Electromyography
A56232Billing and Coding: Foot Care

Related codes at this level

Codes that share G13. If G13.1 is not quite right, the correct code is usually one of these.

Questions about G13.1

Is G13.1 a billable ICD-10-CM code?: Yes. G13.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does G13.1 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).