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    v1.0.28
    OpenPayerBilling CodesDiseases of veins, lymphatic vessels and lymph nodes, not elsewhere classifiedICD-10-CM i80-phlebitis-and-thrombophlebitis
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    ICD-10-CM Code For Phlebitis And Thrombophlebitis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I80 includes diagnoses of phlebitis and thrombophlebitis, covering inflammation of superficial and deep veins often with associated thrombus formation. These ICD-10-CM diagnosis codes are used to document clinical presentations such as isolated superficial vein inflammation, deep venous thrombosis secondary to venous inflammation, and site-specific venous involvement including lower extremity veins. Accurate coding within the ICD-10-CM I80 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM I80: Phlebitis And Thrombophlebitis Overview

    The ICD-10-CM I80 group represents inflammation of veins and vein-associated thrombotic events affecting superficial and deep venous systems. These diagnoses target the venous circulation, commonly in the lower extremities, and include both phlebitis and thrombophlebitis presentations. Accurate coding matters for clinical communication, care coordination, and correct reimbursement for services related to vascular inflammation and thrombosis.

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    When to Use

    Use a code from this group when the clinical record documents phlebitis or thrombophlebitis with sufficient specificity about site and depth of venous involvement. Select site-specific codes when documentation identifies the affected vein or anatomical location to support accurate classification and billing.

    ICD-10-CM Codes

    39 rows

    ICD-10-CM CodeDescription
    I80.00Phlebitis and thrombophlebitis of superficial vessels of unspecified lower extremity
    I80.01Phlebitis and thrombophlebitis of superficial vessels of right lower extremity
    I80.02Phlebitis and thrombophlebitis of superficial vessels of left lower extremity
    I80.03Phlebitis and thrombophlebitis of superficial vessels of lower extremities, bilateral
    I80.10Phlebitis and thrombophlebitis of unspecified femoral vein
    I80.11Phlebitis and thrombophlebitis of right femoral vein
    I80.12Phlebitis and thrombophlebitis of left femoral vein
    I80.13Phlebitis and thrombophlebitis of femoral vein, bilateral
    I80.201Phlebitis and thrombophlebitis of unspecified deep vessels of right lower extremity
    I80.202Phlebitis and thrombophlebitis of unspecified deep vessels of left lower extremity
    I80.203Phlebitis and thrombophlebitis of unspecified deep vessels of lower extremities, bilateral
    I80.209Phlebitis and thrombophlebitis of unspecified deep vessels of unspecified lower extremity
    I80.211Phlebitis and thrombophlebitis of right iliac vein
    I80.212Phlebitis and thrombophlebitis of left iliac vein
    I80.213Phlebitis and thrombophlebitis of iliac vein, bilateral
    I80.219Phlebitis and thrombophlebitis of unspecified iliac vein
    I80.221Phlebitis and thrombophlebitis of right popliteal vein
    I80.222Phlebitis and thrombophlebitis of left popliteal vein
    I80.223Phlebitis and thrombophlebitis of popliteal vein, bilateral
    I80.229Phlebitis and thrombophlebitis of unspecified popliteal vein

    Showing 1–20 of 39

    DRG Codes

    5 rows

    DRG CodeDescription
    299Peripheral Vascular Disorders with MCC
    300Peripheral Vascular Disorders with CC
    301Peripheral Vascular Disorders without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • A middle-aged patient presents to the emergency department with sudden onset of unilateral calf pain, swelling, erythema, and a positive Homan sign after a recent long flight. Duplex ultrasound confirms an acute occlusive thrombosis of the deep veins of the lower leg; anticoagulation is initiated and the encounter is coded for acute phlebitis/thrombophlebitis of the lower extremity. Typical codes: I80.201, I80.209
    • An elderly nursing home resident has chronic, recurrent superficial vein inflammation with palpable cord and intermittent localized swelling along the course of the great saphenous vein without systemic symptoms; care is provided in the outpatient clinic for symptom control and wound prevention. This represents chronic superficial thrombophlebitis of the leg and is coded accordingly for ongoing management. Typical codes: I80.221, I80.229
    • A hospitalized postoperative patient develops swelling, pain, and erythema at the site of an upper extremity peripheral IV catheter; ultrasound shows thrombosis of a superficial forearm vein associated with the indwelling device, complicating the inpatient stay. The diagnosis documents thrombophlebitis of the upper extremity related to the catheter as a hospital-acquired vascular complication. Typical codes: I80.11, I80.10

    Related Codes

    I81-PORTAL-VEIN-THROMBOSIS

    ICD-10-CM Code For Portal Vein Thrombosis: Group Overview

    I82-OTHER-VENOUS-EMBOLISM-AND-THROMBOSIS

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

    I83-VARICOSE-VEINS-OF-LOWER-EXTREMITIES

    ICD-10-CM Code For Varicose Veins Of Lower Extremities: Group Overview

    I85-ESOPHAGEAL-VARICES

    ICD-10-CM Code For Esophageal Varices: Group Overview

    I86-VARICOSE-VEINS-OTHER-SITES

    ICD-10-CM Code For Varicose Veins Of Other Sites: Group Overview

    I87-OTHER-DISORDERS-OF-VEINS

    ICD-10-CM Code For Other Disorders Of Veins: Group Overview

    I88-NONSPECIFIC-LYMPHADENITIS

    ICD-10-CM Code For Nonspecific Lymphadenitis: Group Overview

    I89-OTHER-NONINFECTIVE-LYMPHATIC-DISORDERS

    ICD-10-CM Code For Other Noninfective Disorders Of Lymphatic Vessels And Lymph Nodes: 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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