T65.9
T65.9 — Toxic effect of unspecified substance
Non-billable headerICD-10-CM
T65.9 is a non-billable header ICD-10-CM code for toxic effect of unspecified substance. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T65
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T65.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead T65.9
4 child codes. Green means billable.
Related codes at this level
Codes that share T65. If T65.9 is not quite right, the correct code is usually one of these.
- T65.0Toxic effect of cyanides
- T65.1Toxic effect of strychnine and its salts
- T65.2Toxic effect of tobacco and nicotine
- T65.3Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues
- T65.4Toxic effect of carbon disulfide
- T65.5Toxic effect of nitroglycerin and other nitric acids and esters
- T65.6Toxic effect of paints and dyes, not elsewhere classified
- T65.8Toxic effect of other specified substances
Questions about T65.9
- Is T65.9 a billable ICD-10-CM code?
- No. T65.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T65.9 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Toxic effects of substances chiefly nonmedicinal as to source (T51-T65).