G24.2 — Idiopathic nonfamilial dystonia
G24.2 is a billable, specific ICD-10-CM code for idiopathic nonfamilial dystonia. It is valid for submission on a claim.
Risk adjustment
G24.2 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
G24.2 is named in 48 Medicare coverage policies — 48 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53057Billing and Coding: Home Health Occupational Therapy
- A53058Billing and Coding: Home Health Physical Therapy
- A53064Billing and Coding: Outpatient Occupational Therapy
- A53065Billing and Coding: Outpatient Physical Therapy
How G24.2 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G24.2.
- Dystonia›idiopathic›nonfamilial
- Dystonia›torsion›symptomatic(nonfamilial)
Code history
G24.2 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 G24. If G24.2 is not quite right, the correct code is usually one of these.
Questions about G24.2
- Is G24.2 a billable ICD-10-CM code?
- Yes. G24.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G24.2 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Extrapyramidal and movement disorders (G20-G26).