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ICD-10-CM 2027 diagnosis code

I73.0Raynaud's syndrome

Not billable — use a more specific code

I73.0 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About I73.0

I73.0 is the ICD-10-CM diagnosis code for Raynaud's syndrome. It belongs to category I73 (other peripheral vascular diseases), block I70-I79 (diseases of arteries, arterioles and capillaries) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within I73 (other peripheral vascular diseases), I73.0 is specifically for Raynaud's syndrome. Related codes cover Thromboangiitis obliterans [Buerger's disease] (I73.1), other specified peripheral vascular diseases (I73.8) and peripheral vascular disease, unspecified (I73.9).

To report this condition, pick the subcode that matches the documentation: I73.00 (without gangrene) and I73.01 (with gangrene).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under I73.0

Coding notes

Applicable toConditions and synonyms classified to this code
  • Raynaud's disease
  • Raynaud's phenomenon (secondary)

Notes that apply from higher levels

Instructions written at a parent level also apply to I73.0.

› From I73 Other peripheral vascular diseases
Excludes2

Broader instructions also apply from Chapter 9: Diseases of the circulatory system.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about I73.0

Is I73.0 billable?

No. I73.0 is a header code. Report one of its more specific subcodes instead.