T42.6 — Antiepileptic and sedative-hypnotic drugs

T42.6 is the ICD-10-CM 2025 code for Antiepileptic and sedative-hypnotic drugs. Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.

T42.6 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under T42.6. Browse the sub-codes listed on this page.

T42.6 belongs to the chapter "Injury, poisoning and certain other consequences of external causes" (codes S00-T88). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.

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