Non-Billable / Non-Specific Code
ICD-10-CM T59 is the diagnosis code for Toxic effect of other gases, fumes and vapors. This code falls under the section "Toxic effects of substances chiefly nonmedicinal as to source" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as T59. They are mutually exclusive:
Understanding where T59 sits in the ICD-10-CM classification helps ensure proper coding:
No, T59 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
T59 is the ICD-10-CM diagnosis code for "Toxic effect of other gases, fumes and vapors". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
T59 is located in Section T51-T65 — "Toxic effects of substances chiefly nonmedicinal as to source" within Chapter 19 of the ICD-10-CM Tabular List.
T59 has 10 sub-code(s) that provide more specific detail: T59.0, T59.1, T59.2, T59.3, T59.4 and more.
Use T59 when the patients documented diagnosis matches "Toxic effect of other gases, fumes and vapors" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Toxic effect of other gases, fumes and vapors is T59.
No, T59 is non-billable. Use a more specific sub-code for primary diagnosis billing.
T59 is in Chapter 19 of the ICD-10-CM Tabular List.
Type 1 Excludes for T59 include: chlorofluorocarbons (T53.5).
Yes, T59 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.