Other drug induced movement disorders

This code represents movement disorders that are an adverse effect of a medication, but do not fit into more specific categories like drug-induced Parkinsonism, neuroleptic malignant syndrome, or tardive dyskinesia. These can include various involuntary movements such as dystonia, chorea, or myoclonus directly attributable to drug exposure.

Use this code when documentation clearly links a patient's new or exacerbated movement disorder to a prescribed or illicit drug, and the specific type of drug-induced movement disorder is not otherwise classified. Supporting documentation should identify the causative agent and describe the resulting abnormal movements.

• Ensure the documentation specifies the drug causing the movement disorder.
• Distinguish from other drug-induced movement disorders with more specific codes (e.g., G21.11 for neuroleptic-induced Parkinsonism, G24.0x for drug-induced dystonia).
• Always code the adverse effect first, followed by the external cause code for the drug (T36-T50 with a 5th or 6th character indicating adverse effect).