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2. ICD-10 Codes
3. Chapter - S00-T88
4. Section - T36-T50
5. Category - T42
6. T42.8X

T42.8X - Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants

• Applicable to Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants
• The 2026 edition of ICD10-CM T42.8X became effective on October 1, 2025.
• This is the American ICD10-CM version of T42.8X - other international versions of ICD10 T42.8X may differ.
• T42.8X is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• T42.8X Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.

The following codes above T42.8X contain annotation back-references that may be applicable to T42.8X:

• Chapter: S00-T88 - Injury, poisoning and certain other consequences of external causes
• Section: T36-T50 - Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances
• Category: T42 - Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.