T42.8
ICD-10Non-billable categoryAntiparkns drug/centr muscle-tone depressants
Official ICD-10-CM descriptor (FY2026)
Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants
T42.8 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Inclusion terms
- Poisoning by, adverse effect of and underdosing of amantadine
ICD-10-CM FY2026 defines 1 code beneath T42.8. See the ICD-10-CM index for what this site publishes.
Related codes in T42
- T42.0Hydantoin derivativescategory
- T42.1Iminostilbenescategory
- T42.2Succinimides and oxazolidinedionescategory
- T42.3Barbituratescategory
- T42.4Benzodiazepinescategory
- T42.5Mixed antiepilepticscategory
- T42.6Antiepileptic and sedative-hypnotic drugscategory
- T42.7Unsp antiepileptic and sedative-hypnotic drugscategory
Where this code sits
- Parent code
- T42
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.