I96 — Gangrene, not elsewhere classified
Is I96 billable?
Yes, but I96 is an unspecified code. I96 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, I96 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting I96.
I96 at a glance
| Code | I96 |
|---|---|
| Description | Gangrene, not elsewhere classified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does I96 group to?
I96 sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 299Peripheral Vascular Disorders with MCCmedical
- 300Peripheral Vascular Disorders with CCmedical
- 301Peripheral Vascular Disorders without CC/MCCmedical
As a secondary diagnosis, I96 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is I96 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I96. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Acrosphacelus
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › abdomen (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › auricle (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › cutaneous, spreading (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › extremity (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › limb (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › perineum (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › spine (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › spreading cutaneous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Gangrene, gangrenous › umbilicus (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- Necrosis, necrotic › skin or subcutaneous tissue NEC (ischemic)
Excludes1 — never code together
The conditions below can never be reported together with I96 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- 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
The conditions below are not part of I96, but a patient may have both at the same time. When documentation supports it, I96 and the excluded code may both be reported.
- gangrene in diabetes mellitus (E08-E13 with .52)
Inclusion terms
Alternative wording in documentation that is classified to I96.
- Gangrenous cellulitis
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I96, but a patient may have both at the same time. When documentation supports it, I96 and the excluded code may both be reported.
- 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.-)
How long has I96 existed?
I96 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with I96?
ICD-10-CM declares these codes mutually exclusive with I96 — exactly one of each pair can be correct for a given encounter.