T32.74

Billable

Corrosions involving 70-79% of body surface with 40-49% 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

A severe chemical burn affecting 70-79% of the body surface, with the deepest burns (third degree) covering 40-49% of the affected area. This represents an extremely critical injury with high mortality risk.

Coding Tips

•Document the specific body regions affected to support medical necessity for specialized burn center care
•Ensure the third-degree percentage is always less than or equal to the total body surface percentage

Clinical Significance

This indicates extremely critical chemical burns covering 70-79% of the body with massive full-thickness destruction (40-49% third-degree), representing near-fatal injury with exceptional mortality risk. These patients require immediate intensive burn care with extensive surgical reconstruction and face grave prognosis with high likelihood of death or severe disability.

Documentation Requirements

✓Body surface area involvement (70-79%)
✓Third-degree burn percentage (40-49%)
✓Chemical agent identification
✓Exposure circumstances and duration
✓Current treatment status
✓Anatomical areas affected
✓Complications and organ failure
✓Extensive surgical interventions

Commonly Confused Codes

T32.73 — Has 30-39% third-degree involvement instead of 40-49%T32.75 — Has 50-59% third-degree involvement instead of 40-49%T32.64 — Involves 60-69% total BSA instead of 70-79%T31.74 — Thermal burns, not chemical corrosions

Code Hierarchy

└T32Corrosions classified according to extent of body surface involved └T32.7Corrosions involving 70-79% of body surface └T32.74Corrosions involving 70-79% of body surface with 40-49% third degree corrosion

└T32.74Corrosions involving 70-79% of body surface with 40-49% third degree corrosion