ICD-10 Code G24.1 – Genetic torsion dystonia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G24.1 – Genetic torsion dystonia
What it is
G24.1 identifies a hereditary dystonia disorder that causes involuntary muscle contractions and twisting movements. Use it when documentation states genetic or familial torsion dystonia.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include sustained muscle contractions, abnormal postures, and repetitive twisting movements that may spread over time.
When to use this code
Use this code when the provider documents genetic torsion dystonia, hereditary dystonia, or a confirmed familial form of torsion dystonia. It may also fit when the record clearly links dystonia to a genetic cause. Check documentation if the type is not specified.
Do not use for
Do not use G24.1 for acquired, drug-induced, or unspecified dystonia. If the record only says “dystonia” without a hereditary cause, choose the more accurate documented code.
Coding tip
Code only when the chart supports a genetic or familial diagnosis; otherwise, verify the exact dystonia type.