Adverse effect of butyrophen/thiothixen neuroleptics, subs

This code signifies an undesirable or harmful reaction experienced by a patient due to the therapeutic use of butyrophenone or thiothixene neuroleptics, specifically during a subsequent encounter for this adverse effect. It indicates that the patient is being seen again for ongoing management or follow-up related to a previously identified adverse drug event from these specific antipsychotic medications.

Apply this code when a patient presents for a follow-up visit, medication adjustment, or further evaluation of an adverse effect (e.g., extrapyramidal symptoms, tardive dyskinesia, neuroleptic malignant syndrome) that was caused by butyrophenone or thiothixene neuroleptics. This code is appropriate for any encounter after the initial treatment of the adverse effect, as long as the patient is still experiencing or being managed for the reaction.

• Always sequence this code after the code(s) for the specific manifestation(s) of the adverse effect.
• Ensure the medical record clearly documents the adverse effect is due to butyrophenone or thiothixene neuroleptics and that this is a subsequent encounter.
• Verify that the encounter is for ongoing management of the adverse effect, not for the initial presentation.