T42.6
Non-billablePoisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs
T42.6 is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs. It is a non-billable category code — use a more specific child code such as T42.6X for billing.
S00-T88 Injury, poisoning and certain other consequences of external causes
Includes
- •Poisoning by, adverse effect of and underdosing of methaqualone
- •Poisoning by, adverse effect of and underdosing of valproic acid
Excludes1 — not coded here
- •poisoning by, adverse effect of and underdosing of carbamazepine (T42.1-)
Frequently asked questions
- What is ICD-10 code T42.6?
- T42.6 is the ICD-10-CM code for "Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
- Is T42.6 a billable code?
- No — T42.6 is a non-billable header code. Use a more specific child code (such as T42.6X) for billing.
- What is excluded from T42.6?
- Excludes1 (not coded here): poisoning by, adverse effect of and underdosing of carbamazepine (T42.1-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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