Other peripheral vascular diseases (I73) ICD-10-CM
The I73 code range covers other peripheral vascular diseases with 9 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the I73 Range 9 codes · 6 billable
- I73 Other peripheral vascular diseasesNon-billable
- I73.0 Raynaud's syndromeNon-billable
- I73.00 Raynaud's syndrome without gangrene
- I73.01 Raynaud's syndrome with gangrene
- I73.1 Thromboangiitis obliterans [Buerger's disease]
- I73.8 Other specified peripheral vascular diseasesNon-billable
- I73.81 Erythromelalgia
- I73.89 Other specified peripheral vascular diseases
- I73.9 Peripheral vascular disease, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the I73 range.
Erythromelalgia
A peripheral arterial disease that is characterized by the triad of ERYTHEMA, burning PAIN, and increased SKIN TEMPERATURE of the extremities (or red, painful extremities). Erythromelalgia may be classified as primary or idiopathic, familial or non-familial. Secondary erythromelalgia is associated with other diseases, the most common being MYELOPROLIFERATIVE DISORDERS.
Peripheral Vascular Diseases
Pathological processes involving any one of the BLOOD VESSELS in the vasculature outside the HEART.
Raynaud Disease
An idiopathic vascular disorder characterized by bilateral Raynaud phenomenon, the abrupt onset of digital paleness or CYANOSIS in response to cold exposure or stress.
Secondary Raynaud Phenomenon
Raynaud phenomenon associated with an underlying autoimmune disorder.
Thromboangiitis Obliterans
A non-atherosclerotic, inflammatory thrombotic disease that commonly involves small and medium-sized arteries or veins in the extremities. It is characterized by occlusive THROMBOSIS and FIBROSIS in the vascular wall leading to digital and limb ISCHEMIA and ulcerations. Thromboangiitis obliterans is highly associated with tobacco smoking.
About the I73 Code Range
Peripheral vascular diseases affect blood vessels away from the center of the body. This category sits within diseases of arteries, arterioles, and capillaries.
I73.0 identifies Raynaud's syndrome and splits by whether gangrene is present. I73.1 identifies thromboangiitis obliterans, also called Buerger's disease. I73.8 groups other specified conditions, separating erythromelalgia from other specified peripheral vascular diseases. I73.9 identifies peripheral vascular disease that is unspecified.
Questions About This Page
How many billable codes are in the I73 range?
Of the 9 codes in this range, 6 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the I73 range classify?
The range classifies other peripheral vascular diseases. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
