T28.40XA ICD-10-CM Code: Burn of unspecified internal organ, initial encounter
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 935 — NON-EXTENSIVE BURNS (MDC 22)
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 T28.40XA in the official ICD-10-CM tabular list.
Use Additional Code
Supplementary codes the tabular list directs you to add.
- external cause code to identify the source and intent of the burn (X00-X19, X75-X77, X96-X98)
- external cause code to identify place (Y92)
Frequently Asked Questions (FAQ) & Clinical Guidance
Does T28.40XA require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T28.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T28.40XA in its code family, with their registry titles.
- T28.3XXA — Burn of internal genitourinary organs, initial encounter
- T28.3XXD — Burn of internal genitourinary organs, subsequent encounter
- T28.3XXS — Burn of internal genitourinary organs, sequela
- T28.4 — Burns of other and unspecified internal organs
- T28.40 — Burn of unspecified internal organ
- T28.40XD — Burn of unspecified internal organ, subsequent encounter
- T28.40XS — Burn of unspecified internal organ, sequela
- T28.41 — Burn of ear drum
- T28.411 — Burn of right ear drum
- T28.411A — Burn of right ear drum, initial encounter