ICD-10-CM T56 is the diagnosis code for Toxic effect of metals. 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 T56. They are mutually exclusive:
Understanding where T56 sits in the ICD-10-CM classification helps ensure proper coding:
No, T56 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
T56 is the ICD-10-CM diagnosis code for "Toxic effect of metals". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
T56 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.
T56 has 10 sub-code(s) that provide more specific detail: T56.0, T56.1, T56.2, T56.3, T56.4 and more.
Use T56 when the patients documented diagnosis matches "Toxic effect of metals" 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 metals is T56.
No, T56 is non-billable. Use a more specific sub-code for primary diagnosis billing.
T56 is in Chapter 19 of the ICD-10-CM Tabular List.
Type 1 Excludes for T56 include: arsenic and its compounds (T57.0); manganese and its compounds (T57.2).
Yes, T56 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.