T27.5XXS ICD-10 Code: Corrosion involving larynx and trachea with lung, 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.

Corrosion involving larynx and trachea with lung, sequela is a billable ICD-10-CM diagnosis code (T27.5S).

Sequencing, inclusion, and exclusion notes published for T27.5XXS in the official ICD-10-CM tabular list.

Underlying conditions that must be sequenced before this 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)

Yes. The appropriate 7th character is to be added to each code from category T27.

Official ICD-10-CM classifications closest to T27.5XXS in its code family, with their registry titles.

T27.4XXD — Corrosion of larynx and trachea, subsequent encounter
T27.4XXS — Corrosion of larynx and trachea, sequela
T27.5 — Corrosion involving larynx and trachea with lung
T27.5XXA — Corrosion involving larynx and trachea with lung, initial encounter
T27.5XXD — Corrosion involving larynx and trachea with lung, subsequent encounter
T27.6 — Corrosion of other parts of respiratory tract
T27.6XXA — Corrosion of other parts of respiratory tract, initial encounter
T27.6XXD — Corrosion of other parts of respiratory tract, subsequent encounter
T27.6XXS — Corrosion of other parts of respiratory tract, sequela
T27.7 — Corrosion of respiratory tract, part unspecified