G57.91
G57.91 — Unspecified mononeuropathy of right lower limb
Billable / specific codeICD-10-CMright
G57.91 is a billable, specific ICD-10-CM code for unspecified mononeuropathy of right lower limb. It is valid for submission on a claim.
Risk adjustment
G57.91 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
G57.91 is named in 21 Medicare coverage policies — 19 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56731Billing and Coding: Nerve Blocks and Electrostimulation for Peripheral Neuropathynot covered
- A57663Billing and Coding: Nerve Blocks for Peripheral Neuropathynot covered
- A53058Billing and Coding: Home Health Physical Therapy
- A54095Billing and Coding: Nerve Conduction Studies and Electromyography
Related codes at this level
Codes that share G57.9. If G57.91 is not quite right, the correct code is usually one of these.
Questions about G57.91
- Is G57.91 a billable ICD-10-CM code?
- Yes. G57.91 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G57.91 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Nerve, nerve root and plexus disorders (G50-G59).