T32.42 Corrosions involving 40-49% of body surface with 20-29% third degree corrosion

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from T32 Corrosions classified according to extent of body surface involved

Notes

• This category is to be used as the primary code only when the site of the corrosion is unspecified. It may be used as a supplementary code with categories T20-T25 when the site is specified.

Risk adjustment (HCC)

• CMS-HCC V28: HCC 385 — Severe Skin Burn
• CMS-HCC V22: HCC 162 — Severe Skin Burn or Condition
• ESRD V24: HCC 162

MS-DRG index

Defines the logic of DRG(s) 927,933 in MDC 22.

Approximate ICD-9-CM (GEMs)

• 948.42 Burn [any degree] involving 40-49 percent of body surface with third degree burn, 20-29% (approximate)

Diagnosis Index entries for T32.42

• Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › extent (percentage of body surface) › 40-49 percent (0-9 percent third degree) › with › 20-29 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) › with › 20-29 percent third degree

Nearby codes

• 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
• T32.40 Corrosions involving 40-49% of body surface with 0% to 9% third degree corrosion
• 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 (this code)
• 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
• T32.50 Corrosions involving 50-59% of body surface with 0% to 9% third degree corrosion
• T32.51 Corrosions involving 50-59% of body surface with 10-19% third degree corrosion