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    v1.0.28
    OpenPayerBilling CodesDiseases of arteries, arterioles and capillariesICD-10-CM i73-other-peripheral-vascular-diseases
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    ICD-10-CM Code For Other Peripheral Vascular Diseases: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I73 includes peripheral vascular disorders such as peripheral vascular disease not elsewhere classified, Raynaud phenomenon, and other nontraumatic arterial and capillary conditions affecting the limbs and peripheral circulation. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving compromised peripheral blood flow, ischemia, trophic changes, or vasospastic conditions, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM I73 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM I73: Other Peripheral Vascular Diseases Overview

    The ICD-10-CM I73 group covers peripheral vascular disorders affecting arteries, arterioles, and capillaries outside the heart and brain. These diagnoses include conditions such as peripheral vascular disease not elsewhere classified, Raynaud phenomenon, and thrombotic conditions of peripheral vessels. Accurate coding matters because it supports complete clinical documentation and informs appropriate reimbursement for vascular care.

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    When to Use

    Use a code from this group when documenting clinical encounters for patients with peripheral arterial insufficiency, vasospasm, or other nontraumatic peripheral vascular conditions. Select the most specific code that reflects the anatomic location, severity, and associated complications when present.

    ICD-10-CM Codes

    6 rows

    ICD-10-CM CodeDescription
    I73.00Raynaud's syndrome without gangrene
    I73.01Raynaud's syndrome with gangrene
    I73.1Thromboangiitis obliterans [Buerger's disease]
    I73.81Erythromelalgia
    I73.89Other specified peripheral vascular diseases
    I73.9Peripheral vascular disease, unspecified

    DRG Codes

    6 rows

    DRG CodeDescription
    299Peripheral Vascular Disorders with MCC
    300Peripheral Vascular Disorders with CC
    301Peripheral Vascular Disorders without CC/MCC
    545Connective Tissue Disorders with MCC
    546Connective Tissue Disorders with CC
    547Connective Tissue Disorders without CC/MCC

    Typical Clinical Scenarios

    • An older patient with a long history of smoking and diabetes presents to clinic with progressively worsening calf pain on ambulation that resolves with rest, decreased distal pulses on exam, and an ankle-brachial index consistent with peripheral arterial insufficiency without tissue loss. The visit documents chronic peripheral arterial disease of the lower extremities as the primary problem and outpatient management is continued. Typical codes: I73.9
    • A patient with known varicose veins and chronic venous insufficiency develops new painful, swollen, erythematous lower leg with palpable cord and local inflammation after recent prolonged travel; duplex ultrasound confirms superficial thrombophlebitis. The acute presentation requires evaluation and treatment for the inflamed venous segment as a peripheral venous disorder. Typical codes: I73.81
    • A hospitalized patient with poorly controlled diabetes and peripheral neuropathy is admitted for a nonhealing foot ulcer that has progressed to localized gangrene and is noted to have small vessel disease contributing to tissue ischemia; vascular surgery documents other peripheral vascular disease as a contributing condition complicating wound healing. Typical codes: I73.1, I73.89

    Related Codes

    I70-ATHEROSCLEROSIS

    ICD-10-CM Code For Atherosclerosis: Group Overview

    I71-AORTIC-ANEURYSM-AND-DISSECTION

    ICD-10-CM Code For Aortic Aneurysm And Dissection: Group Overview

    I72-OTHER-ANEURYSM-PERIPHERAL-ARTERIES

    ICD-10-CM Code For Other Aneurysm: Group Overview

    I74-ARTERIAL-EMBOLISM-AND-THROMBOSIS

    ICD-10-CM Code For Arterial Embolism And Thrombosis: Group Overview

    I75-ATHEROEMBOLISM

    ICD-10-CM Code For Atheroembolism: Group Overview

    I76-SEPTIC-ARTERIAL-EMBOLISM

    ICD-10-CM Code For Septic Arterial Embolism: Group Overview

    I77-OTHER-DISORDERS-OF-ARTERIES-AND-ARTERIOLES

    ICD-10-CM Code For Other Disorders Of Arteries And Arterioles: Group Overview

    I78-DISEASES-OF-CAPILLARIES

    ICD-10-CM Code For Diseases Of Capillaries: Group Overview

    I79-DISORDERS-OF-ARTERIES-ARTERIOLES-CAPILLARIES

    ICD-10-CM Code For Disorders Of Arteries Arterioles And Capillaries In Diseases Classified Elsewhere: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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