Drug induced acute dystonia

This code signifies the sudden onset of involuntary muscle contractions, spasms, or posturing directly attributable to the administration of a medication. These dystonic reactions can manifest as oculogyric crises, torticollis, or opisthotonus, among other presentations.

Apply this code when documentation clearly links acute dystonic symptoms to a specific drug, often antipsychotics, antiemetics, or other dopamine-blocking agents. The patient's medical record should detail the drug exposure and the temporal relationship to the dystonic event.

• Always sequence this code first when it is the primary reason for the encounter.
• Ensure the medical record explicitly states "drug-induced" and "acute" to support this specific diagnosis.
• Do not confuse with other forms of dystonia (e.g., idiopathic, tardive) which have different codes.