MCMCB Pro
G57.20

G57.20Lesion of femoral nerve, unspecified lower limb

Billable / specific codeICD-10-CMunspecified

G57.20 is a billable, specific ICD-10-CM code for lesion of femoral nerve, unspecified lower limb. It is valid for submission on a claim.

Risk adjustment

G57.20 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

G57.20 is named in 2 Medicare coverage policies 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56607Billing and Coding: Continuous Peripheral Nerve Blocks (CPNB)
  • A57668Billing and Coding: Nerve Conduction Studies and Electromyography

Related codes at this level

Codes that share G57.2. If G57.20 is not quite right, the correct code is usually one of these.

Questions about G57.20

Is G57.20 a billable ICD-10-CM code?
Yes. G57.20 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does G57.20 sit in the tabular list?
Diseases of the nervous system (G00-G99), in the block Nerve, nerve root and plexus disorders (G50-G59).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.