DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

I96 diagnosis code · Billable category · FY2027

I96 Gangrene, not elsewhere classified

  • Billable
  • CC
  • HCC 263
  • POA reported

I96 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 9 Diseases of the circulatory system (I00-I99)
  2. I95-I99 Other and unspecified disorders of the circulatory system (I95-I99)
  3. I96 Gangrene, not elsewhere classified
CC / MCC
CC
MS-DRG
299-301, 791, 793
HCC V28
263
POA
Reported
Code Editor
–
Index entries
13

Instructions

At I96

Inclusion terms

  • Gangrenous cellulitis

Excludes1

  • gangrene in atherosclerosis of native arteries of the extremities (I70.26) I70.26
  • gangrene in hernia (K40.1, K40.4, K41.1, K41.4, K42.1, K43.1-, K44.1, K45.1, K46.1) 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.-) I73
  • gangrene of certain specified sites - see Alphabetical Index
  • gas gangrene (A48.0) A48.0
  • pyoderma gangrenosum (L88) L88

Excludes2

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

Notes that also apply

Chapter 9 instructions (Excludes2 10): printed on the chapter 9 page.

Index entries

  • Acrosphacelus → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)abdomen (wall) → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)auricle → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)cutaneous, spreading → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)extremity (lower) (upper) → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)limb (lower) (upper) → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)perineum → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)spine → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)spreading cutaneous → I96
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)umbilicus → I96
  • Necrosis, necrotic (ischemic)skin or subcutaneous tissue NEC → I96
  • Noma (gangrenous) (hospital) (infective)auricle → I96

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for I96
CC / MCCCC
PDX exclusion list0531 (45 codes)
Appendix BMDC 05 Diseases and Disorders of the Circulatory System, MS-DRG 299-301 (Peripheral Vascular Disorders with MCC…); MDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 791 (Prematurity with Major Problems…); MDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 793 (Full Term Neonate with Major Problems…)
Code Editor–
POAReported
HCC V28HCC 263 Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene

CC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy