T32.43

Billable

Corrosions involving 40-49% 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

Chemical burn affecting 40-49% of the body surface, with the most severe burns (third degree) covering 30-39% of the affected area.

Coding Tips

•Document the specific chemical agent causing the corrosion for complete clinical documentation
•Higher percentages of third-degree corrosion indicate more severe tissue damage and longer recovery times

Clinical Significance

Corrosions involving 40-49% of body surface area with 30-39% third-degree involvement represent catastrophic chemical burn injury with grave prognosis requiring immediate life-sustaining interventions. This extensive pattern of chemical-induced full-thickness tissue destruction demands the highest level of specialized chemical burn center care with complex systemic support, extensive surgical reconstruction, and aggressive management of systemic toxicity.

Documentation Requirements

✓Documentation of 40-49% total body surface area chemical involvement
✓Clear documentation that 30-39% of affected area has third-degree corrosion
✓Identification of specific chemical agent and concentration if available
✓Comprehensive emergency decontamination procedure documentation
✓Assessment confirming extensive full-thickness tissue destruction
✓Evidence of immediate chemical burn center admission with highest care level
✓Documentation of systemic toxicity assessment and specialized antidotal therapy
✓Surgical planning for extensive reconstruction and life-saving procedures

Commonly Confused Codes

T31.43 — Thermal burns 40-49% TBSA with 30-39% third degree (thermal, not chemical)T32.42 — Corrosions 40-49% TBSA with 20-29% third degree (less third-degree)T32.44 — Corrosions 40-49% TBSA with 40-49% third degree (all burns third-degree)T32.33 — Corrosions 30-39% TBSA with 30-39% third degree (smaller total area)T32.53 — Corrosions 50-59% TBSA with 30-39% third degree (larger total area)

Code Hierarchy

└T32Corrosions classified according to extent of body surface involved └T32.4Corrosions involving 40-49% of body surface └T32.43Corrosions involving 40-49% of body surface with 30-39% third degree corrosion

└T32.43Corrosions involving 40-49% of body surface with 30-39% third degree corrosion