2026 ICD-10-CM Diagnosis Code I96Gangrene, not elsewhere classified
ICD-10-CM Codes›I00–I99›I95-I99›I96
- Billable — Valid for Submission
- Not Chronic
I96 is a billable ICD-10-CM diagnosis code for gangrene, not elsewhere classified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 299 through 301. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gangrene.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acral gangrene
- Application site necrosis
- Bilateral gangrene of feet
- Bilateral gangrene of finger
- Bilateral gangrene of toe
- Colostomy necrosis
- Coumarin necrosis
- Dermatosis caused by coumarin
- Disorder of skin due to radiotherapy
- Ergotism
- Flap necrosis
- Gangrene due to arterial insufficiency
- Gangrene due to peripheral vascular disease
- Gangrene of buttock
- Gangrene of colostomy
- Gangrene of finger
- Gangrene of finger of left hand
- Gangrene of finger of right hand
- Gangrene of foot
- Gangrene of hand
- Gangrene of left foot
- Gangrene of newborn
- Gangrene of perineum
- Gangrene of right foot
- Gangrene of thumb
- Gangrene of toe
- Gangrene of toe of left foot
- Gangrene of toe of right foot
- Gangrenous disorder
- Gangrenous ergotism
- Gangrenous pressure injury
- Gastrointestinal anastomotic necrosis
- Ileostomy necrosis
- Injection site necrosis
- Ischemic gangrene
- Necrosis caused by ionizing radiation
- Necrosis following injection of local anesthetic
- Necrosis of myocutaneous flap
- Necrosis of skin due to and following injection of filler
- Necrosis of skin flap
- Necrosis of stoma
- Necrosis of subcutaneous tissue
- Non-healing surgical wound
- Partial myocutaneous flap necrosis
- Peripheral gangrene
- Progressive cutaneous gangrene
- Radionecrosis of skin
- Radionecrosis of skin due to and following radiotherapy
- Skin necrosis
- Skin necrosis due to heparin induced thrombocytopenia
- Surgical wound necrosis
- Tissue necrosis
- Total necrosis of myocutaneous flap
- Wound edge finding
- Wound edge necrosis
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Gangrenous cellulitis
Type 1 Excludes
- 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
Type 2 Excludes
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Acrosphacelus - I96
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) - See Also: Necrosis; - I96
- abdomen (wall) - I96
- auricle - I96
- cutaneous, spreading - I96
- extremity (lower) (upper) - I96
- limb (lower) (upper) - I96
- perineum - I96
- spine - I96
- spreading cutaneous - I96
- umbilicus - I96
- Necrosis, necrotic (ischemic) - See Also: Gangrene;
- skin or subcutaneous tissue NEC - I96
- Noma (gangrenous) (hospital) (infective) - A69.0
- auricle - I96
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- 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
- Noma(gangrenous) (hospital) (infective)
- auricle
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Ergotism
poisoning caused by ingesting ergotized grain or by the misdirected or excessive use of ergot as a medicine.
Patient EducationClinical
Gangrene
Gangrene is the death of tissues in your body. It happens when a part of your body loses its blood supply. Gangrene can happen on the surface of the body, such as on the skin, or inside the body, in muscles or organs. Causes include:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert I96 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I96Overview
Is I96 (Gangrene, not elsewhere classified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report gangrene, not elsewhere classified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does I96 group to?
When gangrene, not elsewhere classified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 299, 300, 301, with relative weights from 0.7197 to 1.6327 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of I96?
Under the General Equivalence Mappings, gangrene, not elsewhere classified converts to ICD-9-CM 785.4 (gangrene). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
