ICD-10-CM 2027
ICD-10 code for Raynaud's disease
From the official ICD-10-CM alphabetic index entry “Raynaud's disease, phenomenon or syndrome (secondary)”. Page updated September 29, 2026.
About coding Raynaud's disease
The ICD-10-CM code for Raynaud's disease is I73.00 (Raynaud's syndrome without gangrene). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on I73.00.
Within I73.0, choose I73.00 (without gangrene) only when documentation doesn't support a more specific option: with gangrene (I73.01).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 545 (Connective Tissue Disorders with MCC, relative weight 2.3892), DRG 546 (Connective Tissue Disorders with CC, relative weight 1.1745) and DRG 547 (Connective Tissue Disorders without CC/MCC, relative weight 0.7526), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Raynaud's disease codes (official index)
- with gangrene (symmetric) I73.01 — Raynaud's syndrome with gangrene
Common questions about Raynaud's disease ICD-10 codes
What is the ICD-10 code for Raynaud's disease?
- I73.00 — Raynaud's syndrome without gangrene. More specific codes apply when the documentation supports them: I73.01.
Is I73.00 billable?
- Yes. I73.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I73.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I73.00 as a principal diagnosis.
Is I73.00 a CC or MCC?
- No. I73.00 is neither a CC nor an MCC under MS-DRG v44.0.