ICD-10-CM > I00-I99 > I70-I79 > I73 > I73.0 I73.0 Raynaud's syndrome Non-Billable/Non-Specific Applicable To Raynaud's diseaseRaynaud's phenomenon (secondary) Codes I73.00Raynaud's syndrome without gangreneI73.01Raynaud's syndrome with gangrene