T56.1X4D

Billable

Toxic effect of mercury and its compounds, undetermined, subsequent encounter

T56.1X4D is the ICD-10-CM code for Toxic effect of mercury and its compounds, undetermined, subsequent encounter. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
S00-T88
Parent
T56.1X4
Edition
FY2026

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

What this means — in plain language

MedlinePlus · NIH

Mercury is an element that is found in air, water and soil. It has several forms. Metallic mercury is a shiny, silver-white, odorless liquid. If heated, it is a colorless, odorless gas. It also combines with other elements to form powders or crystals. Mercury is in many products. Metallic mercury is used in glass thermometers, silver dental fillings, and button batteries. Mercury salts may be used in skin creams and…

Read more about Mercury at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

No additional coding notes for this code.

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

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

Frequently asked questions

What is ICD-10 code T56.1X4D?
T56.1X4D is the ICD-10-CM code for "Toxic effect of mercury and its compounds, undetermined, subsequent encounter". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T56.1X4D a billable code?
Yes — T56.1X4D is a billable, specific ICD-10-CM code valid for reimbursement.

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

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