T21.3

T21.3: Burn of third degree of trunk

Non-billable headerICD-10-CM

T21.3 is a non-billable header ICD-10-CM code for burn of third degree of trunk. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T21

A: initial encounter
D: subsequent encounter
S: sequela

Use additional code

Add a secondary code to capture the detail described below.

external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)

Excludes2 inherited from the categories above T21.3

Not part of this code, but both may be coded when both are present.

Written on T21: Burn and corrosion of trunk

burns and corrosion of axilla (T22.- with fifth character 4)
burns and corrosion of scapular region (T22.- with fifth character 6)
burns and corrosion of shoulder (T22.- with fifth character 5)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T21.3

9 child codes. Green means billable.