T21.09XS ICD-10-CM Code: Burn of unspecified degree of other site of trunk, sequela
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 604 — TRAUMA TO THE SKIN, SUBCUTANEOUS TISSUE AND BREAST WITH MCC (MDC 09)
- MS-DRG 605 — TRAUMA TO THE SKIN, SUBCUTANEOUS TISSUE AND BREAST WITHOUT MCC (MDC 09)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T21.09XS in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- burns and corrosion of hip region
- burns and corrosions of first degree [erythema]
- burns and corrosions of second degree [blisters][epidermal loss]
- burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- 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)
Use Additional Code
Supplementary codes the tabular list directs you to add.
- external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)
- Use additional code from category T31 or T32 to identify extent of body surface involved
Frequently Asked Questions (FAQ) & Clinical Guidance
Does T21.09XS require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T21.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T21.09XS in its code family, with their registry titles.
- T21.07XD — Burn of unspecified degree of female genital region, subsequent encounter
- T21.07XS — Burn of unspecified degree of female genital region, sequela
- T21.09 — Burn of unspecified degree of other site of trunk
- T21.09XA — Burn of unspecified degree of other site of trunk, initial encounter
- T21.09XD — Burn of unspecified degree of other site of trunk, subsequent encounter
- T21.1 — Burn of first degree of trunk
- T21.10 — Burn of first degree of trunk, unspecified site
- T21.10XA — Burn of first degree of trunk, unspecified site, initial encounter
- T21.10XD — Burn of first degree of trunk, unspecified site, subsequent encounter
- T21.10XS — Burn of first degree of trunk, unspecified site, sequela