Drug induced subacute dyskinesia

This code represents an involuntary movement disorder characterized by slow, writhing, or jerky movements that develop as a side effect of medication. It is a subacute form of dyskinesia, meaning its onset is typically within days to weeks of drug exposure, rather than immediate or chronic. The movements often affect the face, trunk, and extremities.

Use this code when documentation clearly indicates dyskinesia caused by a prescribed or illicit drug, with a subacute onset. This diagnosis requires a direct causal link between drug exposure and the development of the movement disorder. Supporting documentation should include medication history, onset of symptoms relative to drug initiation or dosage change, and a clinical assessment confirming dyskinesia.

• Always identify the specific drug causing the dyskinesia by coding the adverse effect of the drug (T36-T50 with a 5th or 6th character of 5).
• Distinguish from tardive dyskinesia (G24.02), which has a delayed onset and is often irreversible.
• Do not use for acute dystonia or other drug-induced movement disorders that are not dyskinesia.