T59.9
Header — not billableToxic effect of unspecified gases, fumes and vapors
The ICD-10 code for toxic effect of unspecified gases, fumes and vapors is T59.9.
T59.9 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.
Child codes under T59.9
- T59.91Toxic effect of unspecified gases, fumes and vapors, accidental (unintentional)
- T59.92Toxic effect of unspecified gases, fumes and vapors, intentional self-harm
- T59.93Toxic effect of unspecified gases, fumes and vapors, assault
- T59.94Toxic effect of unspecified gases, fumes and vapors, undetermined
Related codes in this category
- T59.0Toxic effect of nitrogen oxidesnon-billable header
- T59.1Toxic effect of sulfur dioxidenon-billable header
- T59.2Toxic effect of formaldehydenon-billable header
- T59.3Toxic effect of lacrimogenic gasnon-billable header
- T59.4Toxic effect of chlorine gasnon-billable header
- T59.5Toxic effect of fluorine gas and hydrogen fluoridenon-billable header
- T59.6Toxic effect of hydrogen sulfidenon-billable header
- T59.7Toxic effect of carbon dioxidenon-billable header
- T59.8Toxic effect of other specified gases, fumes and vaporsnon-billable header
- T59.9Toxic effect of unspecified gases, fumes and vaporsnon-billable header