T42 Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
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The ICD-10-CM code for Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs is T42 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- T36-T50: Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
- Category T42
- 72 codes (54 billable)
- FY2026 Status
- Stable since FY2024
Official Coding Guidelines
Sequence blood vessel/nerve injury first (fragment)injury is to the blood vessels or nerves, that injury should be sequenced first.
Do not assign injury codes for iatrogenic injuries; code complication3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026
References
Cite This Page
Reference T42 with the canonical source and edition:
T42 — Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/T42
Canonical URL: https://icd10codingpro.com/codes/T42