G51.31
G51.31 — Clonic hemifacial spasm, right
Billable / specific codeICD-10-CMright
G51.31 is a billable, specific ICD-10-CM code for clonic hemifacial spasm, right. It is valid for submission on a claim.
Risk adjustment
G51.31 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
G51.31 is named in 34 Medicare coverage policies — 34 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54095Billing and Coding: Nerve Conduction Studies and Electromyography
- A54969Billing and Coding: Nerve Conduction Studies and Electromyography
- A56439Billing and Coding: Blepharoplasty
- A56503Billing and Coding: Blepharoplasty, Eyelid Surgery, and Brow Lift
Code history
G51.31 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 G51.3. If G51.31 is not quite right, the correct code is usually one of these.
Questions about G51.31
- Is G51.31 a billable ICD-10-CM code?
- Yes. G51.31 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G51.31 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Nerve, nerve root and plexus disorders (G50-G59).