Coding and coverage · ICD-10-CM

T31 Burns classified according to extent of body surface involved

Not billable (header)Chapter 19

Report one of the more specific codes below.

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Codes under this one

  • T31.0 Burns involving less than 10% of body surface
  • T31.1 Burns involving 10-19% of body surfaceHeader
  • T31.2 Burns involving 20-29% of body surfaceHeader
  • T31.3 Burns involving 30-39% of body surfaceHeader
  • T31.4 Burns involving 40-49% of body surfaceHeader
  • T31.5 Burns involving 50-59% of body surfaceHeader
  • T31.6 Burns involving 60-69% of body surfaceHeader
  • T31.7 Burns involving 70-79% of body surfaceHeader
  • T31.8 Burns involving 80-89% of body surfaceHeader
  • T31.9 Burns involving 90% or more of body surfaceHeader

Instructional notes

Chapter 19

Excludes2Not included here: the patient may have both; report both when both are present.
Use additional codeAdd a second code for the full picture.
  • code to identify any retained foreign body, if applicable (Z18.-)
Notes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

This code

Notes
  • This category is to be used as the primary code only when the site of the burn is unspecified. It should be used as a supplementary code with categories T20-T25 when the site is specified.

Chapter 19: Injury, poisoning and certain other consequences of external causes · T07-T88 Injury, poisoning and certain other consequences of external causes (T07-T88)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.