T32.91

Billable

Corrosions involving 90% or more of body surface with 10-19% third degree corrosion

HCC Category Mapping

V28HCC 385 — Severe Skin Burn or Condition

0.350

V24HCC 162 — Severe Skin Burn or Condition

0.517

ESRDHCC 162 — Severe Skin Burn or Condition

0.000

What This Code Means

Catastrophic chemical burn covering 90% or more of the body with 10-19% of the area showing the deepest, most severe burns. This is a life-threatening injury with extensive body involvement.

Coding Tips

•Document the specific chemical agent involved and the circumstances of exposure for complete medical record
•Ensure seventh character is included and verify that the percentages documented support both the total body surface area and third-degree extent

Clinical Significance

This represents catastrophic chemical burns covering 90% or more of the body with moderate deep tissue involvement (10-19% third-degree), indicating potentially fatal injury with extremely high mortality risk. These patients require immediate burn center intervention with intensive medical care and extensive surgical management, representing the most severe category of chemical burn injury.

Documentation Requirements

✓Total body surface area (90% or greater)
✓Third-degree burn percentage (10-19%)
✓Chemical agent identification
✓Exposure circumstances and timeline
✓Current treatment phase
✓Anatomical distribution
✓Associated systemic complications
✓Surgical procedures and prognosis

Commonly Confused Codes

T32.81 — Involves 80-89% total BSA instead of 90%+T32.92 — Has 20-29% third-degree involvement instead of 10-19%T32.90 — Has 0-9% third-degree involvement instead of 10-19%T31.91 — Thermal burns rather than chemical corrosions

Code Hierarchy

└T32Corrosions classified according to extent of body surface involved └T32.9Corrosions involving 90% or more of body surface └T32.91Corrosions involving 90% or more of body surface with 10-19% third degree corrosion

└T32.91Corrosions involving 90% or more of body surface with 10-19% third degree corrosion