T32.77 Corrosions involving 70-79% of body surface with 70-79% 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)

• 948.77 Burn [any degree] involving 70-79 percent of body surface with third degree burn, 70-79% (approximate)

Diagnosis Index entries for T32.77

• Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › extent (percentage of body surface) › 70-79 percent (0-9 percent third degree) › with › 70-79 percent third degree
• Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › unspecified site with extent of body surface involved specified › 70-79 percent (0-9 percent third degree) › with › 70-79 percent third degree

Nearby codes

• T32.72 Corrosions involving 70-79% of body surface with 20-29% third degree corrosion
• T32.73 Corrosions involving 70-79% of body surface with 30-39% third degree corrosion
• T32.74 Corrosions involving 70-79% of body surface with 40-49% third degree corrosion
• T32.75 Corrosions involving 70-79% of body surface with 50-59% third degree corrosion
• T32.76 Corrosions involving 70-79% of body surface with 60-69% third degree corrosion
• T32.77 Corrosions involving 70-79% of body surface with 70-79% third degree corrosion (this code)
• T32.8 Corrosions involving 80-89% of body surface
• T32.80 Corrosions involving 80-89% of body surface with 0% to 9% third degree corrosion
• T32.81 Corrosions involving 80-89% of body surface with 10-19% third degree corrosion
• T32.82 Corrosions involving 80-89% of body surface with 20-29% third degree corrosion
• T32.83 Corrosions involving 80-89% of body surface with 30-39% third degree corrosion