T65.9
Header — not billableToxic effect of unspecified substance
The ICD-10 code for toxic effect of unspecified substance is T65.9.
T65.9 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- T65.0Toxic effect of cyanidesnon-billable header
- T65.1Toxic effect of strychnine and its saltsnon-billable header
- T65.2Toxic effect of tobacco and nicotinenon-billable header
- T65.3Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologuesnon-billable header
- T65.4Toxic effect of carbon disulfidenon-billable header
- T65.5Toxic effect of nitroglycerin and other nitric acids and estersnon-billable header
- T65.6Toxic effect of paints and dyes, not elsewhere classifiednon-billable header
- T65.8Toxic effect of other specified substancesnon-billable header
- T65.9Toxic effect of unspecified substancenon-billable header