T32.73

Billable

Corrosions involving 70-79% of body surface with 30-39% 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 30-39% of the affected area. This is a life-threatening injury requiring immediate emergency care.

Coding Tips

•Always code both the extent of total body surface involvement and the percentage of third-degree burns for accurate severity assessment
•These codes require a seventh character for episode of care (A for initial, D for subsequent, S for sequela)

Clinical Significance

This represents catastrophic chemical burns affecting 70-79% of the body with extensive full-thickness destruction (30-39% third-degree), indicating life-threatening injury with extremely high mortality risk. These patients require immediate burn center intervention with aggressive surgical management and face significant risk of death or severe permanent disability.

Documentation Requirements

✓Total body surface area (70-79%)
✓Third-degree burn extent (30-39%)
✓Chemical agent and exposure details
✓Injury timeline and circumstances
✓Current treatment phase
✓Anatomical distribution
✓Associated organ dysfunction
✓Multiple surgical procedures

Commonly Confused Codes

T32.72 — Has 20-29% third-degree involvement instead of 30-39%T32.74 — Has 40-49% third-degree involvement instead of 30-39%T32.63 — Involves 60-69% total BSA instead of 70-79%T31.73 — Thermal burns rather than chemical corrosions

Code Hierarchy

└T32Corrosions classified according to extent of body surface involved └T32.7Corrosions involving 70-79% of body surface └T32.73Corrosions involving 70-79% of body surface with 30-39% third degree corrosion

└T32.73Corrosions involving 70-79% of body surface with 30-39% third degree corrosion