I73.01 Raynaud's syndrome with gangrene

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from I73 Other peripheral vascular diseases

Excludes2 (not included here)

• chilblains (T69.1)
• frostbite (T33-T34)
• immersion hand or foot (T69.0-)
• spasm of cerebral artery (G45.9)

Applies from I73.0 Raynaud's syndrome

Applicable to

• Raynaud's disease
• Raynaud's phenomenon (secondary)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 263 — Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene
• CMS-HCC V22: HCC 106 — Atherosclerosis of the Extremities with Ulceration or Gangrene
• ESRD V24: HCC 106

MS-DRG index

Defines the logic of DRG(s) 545-547 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 443.0 Raynaud's syndrome (approximate)
• 785.4 Gangrene (approximate)

Code annotations containing back-references to I73.01

Back-references to I73

• Type 1 Excludes: I96 Gangrene, not elsewhere classified ("gangrene in other peripheral vascular diseases (I73.-)")

Diagnosis Index entries for I73.01

• 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

Nearby codes

• I73 Other peripheral vascular diseases
• I73.0 Raynaud's syndrome
• I73.00 Raynaud's syndrome without gangrene
• I73.01 Raynaud's syndrome with gangrene (this code)
• I73.1 Thromboangiitis obliterans [Buerger's disease]
• I73.8 Other specified peripheral vascular diseases
• I73.81 Erythromelalgia
• I73.89 Other specified peripheral vascular diseases
• I73.9 Peripheral vascular disease, unspecified