I96
Gangrene, not elsewhere classified
I96 is a billable ICD-10-CM diagnosis code for gangrene, not elsewhere classified. It is part of the FY2027 code set, effective October 1, 2026. The Alphabetic Index lists it under 13 entries. Its coding notes include 6 Excludes1 entries and 11 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported 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)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- gangrene in diabetes mellitus (E08-E13 with .52)
Also from chapter/block level (10 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Wound clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Hospital CC
Counts as a complication or comorbidity (CC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 45 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.
Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix CIPF Comorbidity
On the CMS IPF comorbidity list.
| Comorbidity category | Factor |
|---|---|
| Gangrene | 1.12 |
Inclusion terms
Conditions classified to this code.
- Gangrenous cellulitis
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 13 entries
- Acrosphacelus
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), abdomen (wall)
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), auricle
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), cutaneous, spreading
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), extremity (lower) (upper)
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), limb (lower) (upper)
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), perineum
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), spine
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), spreading cutaneous
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), umbilicus
- Necrosis, necrotic (ischemic), skin or subcutaneous tissue NEC