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ICD-10/T32.40

T32.40 ICD-10-CM Code: Corrosions involving 40-49% of body surface with 0% to 9% third degree corrosion

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.

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

Corrosions involving 40-49% of body surface with 0% to 9% third degree corrosion is a billable ICD-10-CM diagnosis code (T32.40).

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T32.40 in its code family, with their registry titles.

  • T32.30 — Corrosions involving 30-39% of body surface with 0% to 9% third degree corrosion
  • T32.31 — Corrosions involving 30-39% of body surface with 10-19% third degree corrosion
  • T32.32 — Corrosions involving 30-39% of body surface with 20-29% third degree corrosion
  • T32.33 — Corrosions involving 30-39% of body surface with 30-39% third degree corrosion
  • T32.4 — Corrosions involving 40-49% of body surface
  • T32.41 — Corrosions involving 40-49% of body surface with 10-19% third degree corrosion
  • T32.42 — Corrosions involving 40-49% of body surface with 20-29% third degree corrosion
  • T32.43 — Corrosions involving 40-49% of body surface with 30-39% third degree corrosion
  • T32.44 — Corrosions involving 40-49% of body surface with 40-49% third degree corrosion
  • T32.5 — Corrosions involving 50-59% of body surface

View all codes in the T32 family

Indexed Clinical Terms (2)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal), extent (percentage of body surface), 40-49 percent (0-9 percent third degree)
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal), unspecified site with extent of body surface involved specified, 40-49 percent (0-9 percent third degree)