Raynaud's syndrome with gangrene

This code describes Raynaud's syndrome, a vasospastic disorder causing episodic digital ischemia, when it has progressed to tissue necrosis (gangrene). Gangrene indicates severe, irreversible tissue damage, often appearing as black, mummified, or wet and infected tissue, typically in the fingers or toes. This represents a serious complication of Raynaud's, requiring urgent medical attention.

Apply this code when documentation explicitly states Raynaud's syndrome and confirms the presence of gangrene in the affected digits. This diagnosis is supported by clinical examination findings of tissue necrosis, often accompanied by severe pain, numbness, or ulceration. Use this code when the gangrene is directly attributed to the severe vasospasm of Raynaud's.

• Always confirm the documentation specifies "gangrene" and not just severe ulceration or necrosis without the explicit term.
• Distinguish from other causes of gangrene; ensure the etiology is clearly linked to Raynaud's syndrome.
• Consider sequencing with codes for underlying conditions if Raynaud's is secondary (e.g., systemic sclerosis).