I96
BillableGangrene, not elsewhere classified
HCC Category Mapping
V28HCC 263 — Atherosclerosis of the Extremities with Ulceration or Gangrene
0.742V24HCC 106 — Atherosclerosis of the Extremities with Ulceration or Gangrene
0.860ESRDHCC 106 — Atherosclerosis of the Extremities with Ulceration or Gangrene
0.000What This Code Means
Death and decay of body tissue due to loss of blood supply or severe infection, not classified under other specific conditions.
Coding Tips
- •Specify the anatomical site of gangrene with an additional code when possible
- •Investigate whether the gangrene is due to diabetes, atherosclerosis, or other underlying conditions
Clinical Significance
Gangrene not elsewhere classified represents tissue death due to inadequate blood supply or severe infection, a critical condition that often requires urgent surgical intervention including possible amputation. This diagnosis indicates severe end-organ damage and carries high mortality and morbidity risk. It is a major driver of healthcare resource utilization due to surgical costs, prolonged hospitalization, wound care, rehabilitation, and prosthetic needs.
Documentation Requirements
- ✓Explicit documentation of gangrene (dry, wet, or gas gangrene type when specified)
- ✓Anatomical site of gangrenous tissue identified
- ✓Underlying etiology documented (peripheral vascular disease, diabetes, infection, trauma)
- ✓Extent of tissue involvement described
- ✓Vascular assessment findings (pulses, perfusion status, imaging results)
- ✓Treatment plan including surgical intervention, debridement, or amputation if applicable
- ✓Assessment of viability of surrounding tissue
Excludes 1 — Do NOT code together
- gangrene in atherosclerosis of native arteries of the extremities (I70.26)
- gangrene in hernia (K40.1, K40.4, K41.1, K41.4, K42.1, K43.1-, K44.1, K45.1, K46.1)
- gangrene in other peripheral vascular diseases (I73.-)
- gangrene of certain specified sites - see Alphabetical Index
- gas gangrene (A48.0)
- pyoderma gangrenosum (L88)
Commonly Confused Codes
E11.52 — Type 2 diabetes mellitus with diabetic peripheral angiopathy with gangrene; use when gangrene is directly attributable to diabetesI70.261/I70.262 — Atherosclerosis of native arteries of extremities with gangrene; use when gangrene is due to peripheral artery diseaseA48.0 — Gas gangrene; use specifically for clostridial gas gangrene infectionR02 — This code was deleted and replaced by I96; do not use R02L03.xxx — Cellulitis codes; cellulitis is infection without tissue death and should not be confused with gangreneT79.A — Traumatic compartment syndrome; may lead to gangrene but is coded separately
Code Hierarchy
└I96Gangrene, not elsewhere classified
└I96Gangrene, not elsewhere classified