T21.3

Header — not billable

Burn of third degree of trunk

The ICD-10 code for burn of third degree of trunk is T21.3.

T21.3 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 9 more specific codes below.

Clinical notes

Use additional code

This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.

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

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
•If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

T21.3

Clinical notes

Use additional code

Documentation support

Child codes under T21.3

Related codes in this category