I73.01
Raynaud's syndrome with gangrene
I73.01 (also written I7301) is a billable ICD-10-CM diagnosis code for raynaud's syndrome with gangrene. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category I73 (Other peripheral vascular diseases). The Alphabetic Index lists it under 7 entries. Its coding notes include 14 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
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 46 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 |
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 7 entries
- Asphyxia, asphyxiation (by), local, with gangrene
- Cyanosis, paroxysmal digital, with gangrene
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), Raynaud's (symmetric gangrene)
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer), symmetrical
- Phenomenon, Raynaud's (secondary), with gangrene
- Raynaud's disease, phenomenon or syndrome (secondary), with gangrene (symmetric)
- Syndrome, Raynaud's, with gangrene