T31.85 Burns involving 80-89% of body surface with 50-59% third degree burns

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

Applies from T31 Burns 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 burn is unspecified. It should 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)

• 948.85 Burn [any degree] involving 80-89 percent of body surface with third degree burn, 50-59% (approximate)

Code annotations containing back-references to T31.85

Back-references to T31

• Type 1 Excludes: T66 Radiation sickness, unspecified ("burns (T20-T31)")
• Type 2 Excludes: T67 Effects of heat and light ("burns (T20-T31)")
• Type 2 Excludes: T75 Other and unspecified effects of other external causes ("burns (electric) (T20-T31)")

Diagnosis Index entries for T31.85

• Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal) › extent (percentage of body surface) › 80-89 percent › with 50-59 percent third degree burns
• Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal) › unspecified site with extent of body surface involved specified › 80-89 percent (0-9 percent third degree) › with › 50-59 percent third degree

Nearby codes

• T31.80 Burns involving 80-89% of body surface with 0% to 9% third degree burns
• T31.81 Burns involving 80-89% of body surface with 10-19% third degree burns
• T31.82 Burns involving 80-89% of body surface with 20-29% third degree burns
• T31.83 Burns involving 80-89% of body surface with 30-39% third degree burns
• T31.84 Burns involving 80-89% of body surface with 40-49% third degree burns
• T31.85 Burns involving 80-89% of body surface with 50-59% third degree burns (this code)
• T31.86 Burns involving 80-89% of body surface with 60-69% third degree burns
• T31.87 Burns involving 80-89% of body surface with 70-79% third degree burns
• T31.88 Burns involving 80-89% of body surface with 80-89% third degree burns
• T31.9 Burns involving 90% or more of body surface
• T31.90 Burns involving 90% or more of body surface with 0% to 9% third degree burns