Poisoning by oth antieplptc and sed-hypntc drugs, acc, init

This code signifies an accidental overdose or adverse reaction to antiepileptic or sedative-hypnotic medications not specifically classified elsewhere. It indicates that the patient is in the acute phase of treatment for this poisoning event.

Apply this code when a patient presents with symptoms of unintentional poisoning from an antiepileptic drug (e.g., gabapentin, pregabalin) or a sedative-hypnotic (e.g., zolpidem, eszopiclone) that is not a barbiturate or benzodiazepine. This is appropriate for the initial hospital visit or emergency department encounter for the poisoning.

• Always sequence this code first when it is the primary reason for the encounter.
• Requires an additional code for the specific drug if known (from T36-T50).
• Use a seventh character of 'D' for subsequent encounters and 'S' for sequelae.