ICD-10-CM 2027 diagnosis code

T56.82Toxic effect of gadolinium

Not billable — use a more specific codeRequires 7th character

T56.82 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it and add the required 7th character.

Code last changed in FY2024 (effective October 1, 2023). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About T56.82

T56.82 is the ICD-10-CM diagnosis code for toxic effect of gadolinium. It belongs to category T56 (toxic effect of metals), block T51-T65 (toxic effects of substances chiefly nonmedicinal as to source) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within T56.8 (toxic effects of other metals), T56.82 is specifically for toxic effect of gadolinium. Related codes cover effect of thallium (T56.81) and effects of other metals (T56.89).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Don't report T56.82 together with the conditions in its Excludes1 note: adverse effect of diagnostic agents (T50.8X5-).

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

It was added in FY2024, effective October 1, 2023.

7th character

The appropriate 7th character is to be added to each code from category T56

Ainitial encounter
Dsubsequent encounter
Ssequela

Coding notes

Excludes1Not coded here — never report together with this code

adverse effect of diagnostic agents (T50.8X5-)

Notes that apply from higher levels

Instructions written at a parent level also apply to T56.82.

› From T56 Toxic effect of metals

Includes

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

Excludes1

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-)

Broader instructions also apply from T51-T65 Toxic effects of substances chiefly nonmedicinal as to source and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Codes whose notes reference T56.82

R78.72Excludes1

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2024 (effective 10/1/2023): Added
No changes since FY2024.

Common questions about T56.82

Is T56.82 billable?: No. T56.82 is a header code. Report one of its more specific subcodes instead.