T21 Burn and corrosion of trunk

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Burn and corrosion of trunk is T21 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
T20-T25: Burns and corrosions of external body surface, specified by site (T20-T25)
Category T21
81 codes (72 billable)
FY2026 Status
Stable since FY2024
Includes
  • burns and corrosion of hip region
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • 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)

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference T21 with the canonical source and edition:

T21 — Burn and corrosion of trunk. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/T21

Canonical URL: https://icd10codingpro.com/codes/T21

Related Codes

More Specific Codes

T21.0 Burn of unspecified degree of trunk T21.1 Burn of first degree of trunk T21.2 Burn of second degree of trunk T21.3 Burn of third degree of trunk T21.4 Corrosion of unspecified degree of trunk T21.5 Corrosion of first degree of trunk T21.6 Corrosion of second degree of trunk T21.7 Corrosion of third degree of trunk

All Codes in T21

Every most-specific code under T21 Burn and corrosion of trunk (72 codes):

Show the complete T21 code list
T21.00 Burn of unspecified degree of trunk, unspecified site T21.01 Burn of unspecified degree of chest wall T21.02 Burn of unspecified degree of abdominal wall T21.03 Burn of unspecified degree of upper back T21.04 Burn of unspecified degree of lower back T21.05 Burn of unspecified degree of buttock T21.06 Burn of unspecified degree of male genital region T21.07 Burn of unspecified degree of female genital region T21.09 Burn of unspecified degree of other site of trunk T21.10 Burn of first degree of trunk, unspecified site T21.11 Burn of first degree of chest wall T21.12 Burn of first degree of abdominal wall T21.13 Burn of first degree of upper back T21.14 Burn of first degree of lower back T21.15 Burn of first degree of buttock T21.16 Burn of first degree of male genital region T21.17 Burn of first degree of female genital region T21.19 Burn of first degree of other site of trunk T21.20 Burn of second degree of trunk, unspecified site T21.21 Burn of second degree of chest wall T21.22 Burn of second degree of abdominal wall T21.23 Burn of second degree of upper back T21.24 Burn of second degree of lower back T21.25 Burn of second degree of buttock T21.26 Burn of second degree of male genital region T21.27 Burn of second degree of female genital region T21.29 Burn of second degree of other site of trunk T21.30 Burn of third degree of trunk, unspecified site T21.31 Burn of third degree of chest wall T21.32 Burn of third degree of abdominal wall T21.33 Burn of third degree of upper back T21.34 Burn of third degree of lower back T21.35 Burn of third degree of buttock T21.36 Burn of third degree of male genital region T21.37 Burn of third degree of female genital region T21.39 Burn of third degree of other site of trunk T21.40 Corrosion of unspecified degree of trunk, unspecified site T21.41 Corrosion of unspecified degree of chest wall T21.42 Corrosion of unspecified degree of abdominal wall T21.43 Corrosion of unspecified degree of upper back T21.44 Corrosion of unspecified degree of lower back T21.45 Corrosion of unspecified degree of buttock T21.46 Corrosion of unspecified degree of male genital region T21.47 Corrosion of unspecified degree of female genital region T21.49 Corrosion of unspecified degree of other site of trunk T21.50 Corrosion of first degree of trunk, unspecified site T21.51 Corrosion of first degree of chest wall T21.52 Corrosion of first degree of abdominal wall T21.53 Corrosion of first degree of upper back T21.54 Corrosion of first degree of lower back T21.55 Corrosion of first degree of buttock T21.56 Corrosion of first degree of male genital region T21.57 Corrosion of first degree of female genital region T21.59 Corrosion of first degree of other site of trunk T21.60 Corrosion of second degree of trunk, unspecified site T21.61 Corrosion of second degree of chest wall T21.62 Corrosion of second degree of abdominal wall T21.63 Corrosion of second degree of upper back T21.64 Corrosion of second degree of lower back T21.65 Corrosion of second degree of buttock T21.66 Corrosion of second degree of male genital region T21.67 Corrosion of second degree of female genital region T21.69 Corrosion of second degree of other site of trunk T21.70 Corrosion of third degree of trunk, unspecified site T21.71 Corrosion of third degree of chest wall T21.72 Corrosion of third degree of abdominal wall T21.73 Corrosion of third degree of upper back T21.74 Corrosion of third degree of lower back T21.75 Corrosion of third degree of buttock T21.76 Corrosion of third degree of male genital region T21.77 Corrosion of third degree of female genital region T21.79 Corrosion of third degree of other site of trunk
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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