ICD-10 Code I73.01 – Raynaud’s syndrome with gangrene (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I73.01 – Raynaud’s syndrome with gangrene
What it is
I73.01 identifies Raynaud’s syndrome when poor blood flow has progressed to gangrene. It signals a severe ischemic complication affecting the fingers or toes, usually from vasospasm or underlying vascular disease.
Clinical signs
Typical documentation includes Raynaud’s attacks with color change, pain, numbness, or cold sensitivity, plus tissue necrosis or gangrene. Clinical features vary; refer to documentation.
When to use this code
Use I73.01 when the record clearly states Raynaud’s syndrome and gangrene are both present. It fits cases where the provider links digital ischemia or necrosis to Raynaud’s. If the gangrene cause is not specified, check documentation before coding.
Do not use for
Do not use this code for Raynaud’s without gangrene, or for gangrene that is unrelated to Raynaud’s. Check documentation if the condition is described only as peripheral vascular disease or ischemia.
Coding tip
Confirm that the provider documents Raynaud’s syndrome with gangrene together; otherwise, code the conditions separately only when supported.