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I96

I96Gangrene, not elsewhere classified

Billable / specific codeICD-10-CM

I96 is a billable, specific ICD-10-CM code for gangrene, not elsewhere classified. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • 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)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • gangrene in diabetes mellitus (E08-E13 with .52)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Gangrenous cellulitis

Risk adjustment

I96 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 263 Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene1.118 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

I96 is named in 26 Medicare coverage policies 26 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52998Billing and Coding: Surgical Treatment of Nails
  • A53057Billing and Coding: Home Health Occupational Therapy
  • A53058Billing and Coding: Home Health Physical Therapy
  • A53064Billing and Coding: Outpatient Occupational Therapy

How I96 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I96.

  • Acrosphacelus
  • Gangrene, gangrenous(connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
  • Gangrene, gangrenousabdomen(wall)
  • Gangrene, gangrenousauricle
  • Gangrene, gangrenouscutaneous, spreading
  • Gangrene, gangrenousextremity(lower) (upper)
  • Gangrene, gangrenouslimb(lower) (upper)
  • Gangrene, gangrenousperineum
  • Gangrene, gangrenousspine
  • Gangrene, gangrenousspreading cutaneous
  • Gangrene, gangrenousumbilicus
  • Necrosis, necroticskin or subcutaneous tissue NEC

Questions about I96

Is I96 a billable ICD-10-CM code?
Yes. I96 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I96 sit in the tabular list?
Diseases of the circulatory system (I00-I99), in the block Other and unspecified disorders of the circulatory system (I95-I99).
What cannot be coded together with I96?
I96 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.