What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents raynaud's syndrome in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I70-I79Diseases of arteries, arterioles and capillaries
category
I73Other peripheral vascular diseases
currentI73
Official coding notes
Inclusion terms
- Raynaud's disease
- Raynaud's phenomenon (secondary)
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
CardiologistGeneral Physician
Related codes
Sibling codes
Mapped diagnoses and classifications
SNOMED_CT 403674007high
Drug-induced Raynaud's phenomenon
Source: SNOMED International ICD-10 map
SNOMED_CT 286301000119102high
Gangrene due to Raynaud disease
Source: SNOMED International ICD-10 map
SNOMED_CT 286311000119104high
Gangrene due to secondary Raynaud phenomenon
Source: SNOMED International ICD-10 map
SNOMED_CT 361131008high
Isolated primary Raynaud's phenomenon
Source: SNOMED International ICD-10 map
SNOMED_CT 1208898008high
Occupational Raynaud phenomenon
Source: SNOMED International ICD-10 map
SNOMED_CT 1208849004high
Raynaud phenomenon due to autoimmune disease
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
I73.0
Replacement codes
I73.00 — Raynaud's syndrome without gangreneI73.01 — Raynaud's syndrome with gangrene
Common synonyms
Raynaud's syndrome
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.