Poisoning by other and unspecified anticonvulsants

This code signifies an adverse reaction or overdose due to anticonvulsant medications not specifically classified elsewhere, or when the specific anticonvulsant is unknown. It indicates a harmful effect resulting from the ingestion, administration, or exposure to these drugs.

Use this code when documentation clearly states poisoning by an anticonvulsant that doesn't have a more specific ICD-9-CM code (e.g., carbamazepine, valproic acid, phenytoin) or when the specific anticonvulsant is not identified. This applies to both accidental and intentional poisonings, as well as adverse effects of therapeutic use that reach toxic levels.

• Always attempt to identify the specific anticonvulsant involved for more precise coding if possible.
• Requires an E-code (E850.1-E850.9) to specify the external cause of the poisoning (e.g., accidental, intentional self-harm, adverse effect).
• Code any associated signs, symptoms, or manifestations of the poisoning (e.g., seizures, coma, respiratory depression) in addition to this code.