T65
ICD-10Non-billable categoryToxic effect of other and unspecified substances
Official ICD-10-CM descriptor (FY2026)
Toxic effect of other and unspecified substances
T65 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.
7th character
- The appropriate 7th character is to be added to each code from category T65
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under T65
- T65.0Toxic effect of cyanidescategory
- T65.1Toxic effect of strychnine and its saltscategory
- T65.2Toxic effect of tobacco and nicotinecategory
- T65.3Toxic effect of nitrodrv/aminodrv of benzn/homologcategory
- T65.4Toxic effect of carbon disulfidecategory
- T65.5Toxic effect of nitro and oth nitric acids and esterscategory
- T65.6Toxic effect of paints and dyes, not elsewhere classifiedcategory
- T65.8Toxic effect of other specified substancescategory
- T65.9Toxic effect of unspecified substancecategory
Where this code sits
Krasyn AI Coder
Get code suggestions automatically as you type notes. Free for 50 analyses.
Install for Chrome — freeSource
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.