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T56

Non-billable

Toxic effect of metals

T56 is the ICD-10-CM code for Toxic effect of metals. It is a non-billable category code — use a more specific child code such as T56.0 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Subcodes
10
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Includes

  • •toxic effects of fumes and vapors of metals
  • •toxic effects of metals from all sources, except medicinal substances

Excludes1 — not coded here

  • •arsenic and its compounds (T57.0)
  • •manganese and its compounds (T57.2)

Use additional code

  • •code to identify any retained metal foreign body, if applicable (Z18.0-, T18.1-)

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH
Mercury

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code T56?
T56 is the ICD-10-CM code for "Toxic effect of metals". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T56 a billable code?
No — T56 is a non-billable header code. Use a more specific child code (such as T56.0) for billing.
What are the subcodes of T56?
T56 has 10 more specific child codes, including T56.0, T56.1, T56.2.
What is excluded from T56?
Excludes1 (not coded here): arsenic and its compounds (T57.0); manganese and its compounds (T57.2).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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