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ICD-10-CM 2027

ICD-10 code for extent corrosion

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › extent (percentage of body surface)”. Page updated September 29, 2026.

About coding extent corrosion

The official ICD-10-CM index doesn't give a single default code for extent corrosion; the code depends on the details below.

More specific extent corrosion codes (official index)

  • less than 10 percent T32.0 — Corrosions involving less than 10% of body surface
  • 10-19 percent (0-9 percent third degree) T32.10 — Corrosions involving 10-19% of body surface with 0% to 9% third degree corrosion
  • with 10-19 percent third degree T32.11 — Corrosions involving 10-19% of body surface with 10-19% third degree corrosion
  • 20-29 percent (0-9 percent third degree) T32.20 — Corrosions involving 20-29% of body surface with 0% to 9% third degree corrosion
  • with
  • 10-19 percent third degree T32.21 — Corrosions involving 20-29% of body surface with 10-19% third degree corrosion
  • 20-29 percent third degree T32.22 — Corrosions involving 20-29% of body surface with 20-29% third degree corrosion
  • 30-39 percent (0-9 percent third degree) T32.30 — Corrosions involving 30-39% of body surface with 0% to 9% third degree corrosion
  • with
  • 10-19 percent third degree T32.31 — Corrosions involving 30-39% of body surface with 10-19% third degree corrosion
  • 20-29 percent third degree T32.32 — Corrosions involving 30-39% of body surface with 20-29% third degree corrosion
  • 30-39 percent third degree T32.33 — Corrosions involving 30-39% of body surface with 30-39% third degree corrosion
  • 40-49 percent (0-9 percent third degree) T32.40 — Corrosions involving 40-49% of body surface with 0% to 9% third degree corrosion
  • with
  • 10-19 percent third degree T32.41 — Corrosions involving 40-49% of body surface with 10-19% third degree corrosion
  • 20-29 percent third degree T32.42 — Corrosions involving 40-49% of body surface with 20-29% third degree corrosion
  • 30-39 percent third degree T32.43 — Corrosions involving 40-49% of body surface with 30-39% third degree corrosion
  • 40-49 percent third degree T32.44 — Corrosions involving 40-49% of body surface with 40-49% third degree corrosion
  • 50-59 percent (0-9 percent third degree) T32.50 — Corrosions involving 50-59% of body surface with 0% to 9% third degree corrosion
  • with
  • 10-19 percent third degree T32.51 — Corrosions involving 50-59% of body surface with 10-19% third degree corrosion
  • 20-29 percent third degree T32.52 — Corrosions involving 50-59% of body surface with 20-29% third degree corrosion
  • 30-39 percent third degree T32.53 — Corrosions involving 50-59% of body surface with 30-39% third degree corrosion
  • 40-49 percent third degree T32.54 — Corrosions involving 50-59% of body surface with 40-49% third degree corrosion
  • 50-59 percent third degree T32.55 — Corrosions involving 50-59% of body surface with 50-59% third degree corrosion
  • 60-69 percent (0-9 percent third degree) T32.60 — Corrosions involving 60-69% of body surface with 0% to 9% third degree corrosion
  • with
  • 10-19 percent third degree T32.61 — Corrosions involving 60-69% of body surface with 10-19% third degree corrosion
  • 20-29 percent third degree T32.62 — Corrosions involving 60-69% of body surface with 20-29% third degree corrosion
  • 30-39 percent third degree T32.63 — Corrosions involving 60-69% of body surface with 30-39% third degree corrosion
  • 40-49 percent third degree T32.64 — Corrosions involving 60-69% of body surface with 40-49% third degree corrosion
  • 50-59 percent third degree T32.65 — Corrosions involving 60-69% of body surface with 50-59% third degree corrosion
  • 60-69 percent third degree T32.66 — Corrosions involving 60-69% of body surface with 60-69% third degree corrosion
  • 70-79 percent (0-9 percent third degree) T32.70 — Corrosions involving 70-79% of body surface with 0% to 9% third degree corrosion
  • with
  • 10-19 percent third degree T32.71 — Corrosions involving 70-79% of body surface with 10-19% third degree corrosion
  • 20-29 percent third degree T32.72 — Corrosions involving 70-79% of body surface with 20-29% third degree corrosion
  • 30-39 percent third degree T32.73 — Corrosions involving 70-79% of body surface with 30-39% third degree corrosion
  • 40-49 percent third degree T32.74 — Corrosions involving 70-79% of body surface with 40-49% third degree corrosion
  • 50-59 percent third degree T32.75 — Corrosions involving 70-79% of body surface with 50-59% third degree corrosion
  • 60-69 percent third degree T32.76 — Corrosions involving 70-79% of body surface with 60-69% third degree corrosion
  • 70-79 percent third degree T32.77 — Corrosions involving 70-79% of body surface with 70-79% third degree corrosion
  • 80-89 percent (0-9 percent third degree) T32.80 — Corrosions involving 80-89% of body surface with 0% to 9% third degree corrosion
  • with
  • 10-19 percent third degree T32.81 — Corrosions involving 80-89% of body surface with 10-19% third degree corrosion
  • 20-29 percent third degree T32.82 — Corrosions involving 80-89% of body surface with 20-29% third degree corrosion
  • 30-39 percent third degree T32.83 — Corrosions involving 80-89% of body surface with 30-39% third degree corrosion
  • 40-49 percent third degree T32.84 — Corrosions involving 80-89% of body surface with 40-49% third degree corrosion
  • 50-59 percent third degree T32.85 — Corrosions involving 80-89% of body surface with 50-59% third degree corrosion
  • 60-69 percent third degree T32.86 — Corrosions involving 80-89% of body surface with 60-69% third degree corrosion
  • 70-79 percent third degree T32.87 — Corrosions involving 80-89% of body surface with 70-79% third degree corrosion
  • 80-89 percent third degree T32.88 — Corrosions involving 80-89% of body surface with 80-89% third degree corrosion
  • 90 percent or more (0-9 percent third degree) T32.90 — Corrosions involving 90% or more of body surface with 0% to 9% third degree corrosion
  • with
  • 10-19 percent third degree T32.91 — Corrosions involving 90% or more of body surface with 10-19% third degree corrosion
  • 20-29 percent third degree T32.92 — Corrosions involving 90% or more of body surface with 20-29% third degree corrosion
  • 30-39 percent third degree T32.93 — Corrosions involving 90% or more of body surface with 30-39% third degree corrosion
  • 40-49 percent third degree T32.94 — Corrosions involving 90% or more of body surface with 40-49% third degree corrosion
  • 50-59 percent third degree T32.95 — Corrosions involving 90% or more of body surface with 50-59% third degree corrosion
  • 60-69 percent third degree T32.96 — Corrosions involving 90% or more of body surface with 60-69% third degree corrosion
  • 70-79 percent third degree T32.97 — Corrosions involving 90% or more of body surface with 70-79% third degree corrosion
  • 80-89 percent third degree T32.98 — Corrosions involving 90% or more of body surface with 80-89% third degree corrosion
  • 90-99 percent third degree T32.99 — Corrosions involving 90% or more of body surface with 90% or more third degree corrosion

Common questions about extent corrosion ICD-10 codes

What is the ICD-10 code for less than 10 percent extent corrosion?

T32.0 — Corrosions involving less than 10% of body surface.

What is the ICD-10 code for 10-19 percent extent corrosion?

T32.10 — Corrosions involving 10-19% of body surface with 0% to 9% third degree corrosion.

What is the ICD-10 code for 20-29 percent extent corrosion?

T32.20 — Corrosions involving 20-29% of body surface with 0% to 9% third degree corrosion.

What is the ICD-10 code for 30-39 percent extent corrosion?

T32.30 — Corrosions involving 30-39% of body surface with 0% to 9% third degree corrosion.

What is the ICD-10 code for 40-49 percent extent corrosion?

T32.40 — Corrosions involving 40-49% of body surface with 0% to 9% third degree corrosion.

What is the ICD-10 code for 50-59 percent extent corrosion?

T32.50 — Corrosions involving 50-59% of body surface with 0% to 9% third degree corrosion.

What is the ICD-10 code for 60-69 percent extent corrosion?

T32.60 — Corrosions involving 60-69% of body surface with 0% to 9% third degree corrosion.