Non-Billable / Non-Specific Code
ICD-10-CM T65.5 is the diagnosis code for Toxic effect of nitroglycerin and other nitric acids and esters. 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.
Understanding where T65.5 sits in the ICD-10-CM classification helps ensure proper coding:
No, T65.5 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
T65.5 is the ICD-10-CM diagnosis code for "Toxic effect of nitroglycerin and other nitric acids and esters". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of T65.5 is T65 ("Toxic effect of other and unspecified substances"). T65.5 provides a more specific classification within this category.
T65.5 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.
T65.5 has 1 sub-code(s) that provide more specific detail: T65.5X.
Use T65.5 when the patients documented diagnosis matches "Toxic effect of nitroglycerin and other nitric acids and esters" 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 nitroglycerin and other nitric acids and esters is T65.5.
No, T65.5 is non-billable. Use a more specific sub-code for primary diagnosis billing.
T65.5 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, T65.5 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.