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    OpenPayerBilling CodesProcedures / Professional ServicesHCPCS hcpcs-g0365-hemodialysis-access-vessel-mapping
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    HCPCS G0365: Vessel Mapping for Hemodialysis Access

    HCPCS Level II code G0365 describes preoperative vessel mapping for creation of an autogenous hemodialysis conduit, documenting evaluation of arterial inflow and venous outflow; the service is a diagnostic vascular mapping procedure typically performed in an outpatient vascular lab or radiology suite prior to surgical creation of hemodialysis access.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 62-year-old patient with end-stage renal disease (ESRD) on chronic hemodialysis is evaluated for creation of an autogenous arteriovenous fistula. The vascular surgeon orders preoperative imaging to map upper extremity arterial inflow and venous outflow to determine vessel size, patency, and suitability for fistula creation. The patient presents to an outpatient vascular laboratory or hospital-based imaging department for duplex ultrasound vessel mapping. The sonographer performs bilateral upper extremity arterial and venous duplex studies including vein diameter measurements, assessment of stenosis or thrombosis, arterial waveform analysis, and mapping of superficial and deep veins. The study report documents vessel diameters, presence of calcification or stenosis, central venous patency, and recommended site for fistula creation. The professional component (interpretation and report) and technical component (sonographer, equipment, facility) are often billed separately using modifier 26 for the professional component and modifier TC for the technical component. Typical site of service is an outpatient vascular laboratory, hospital outpatient imaging department, or ambulatory surgery center during preoperative evaluation for hemodialysis access creation.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    93880Duplex scan of extremity arteries or bypass grafts; complete bilateral studyArterial duplex scanning that assesses arterial inflow as part of preoperative mapping for hemodialysis access.
    93970Duplex scan of extremity veins, noninvasive; complete bilateral studyVenous duplex scanning used to evaluate venous outflow, diameter, and patency for fistula planning.
    99199Unlisted special service, procedure or reportOccasionally used for specialized or combined vascular mapping services not precisely described by other CPT codes; use per payer policies.
    99213Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutesCommon E/M level for preoperative surgical evaluation or vascular access planning visit that precedes mapping.
    36415Collection of venous blood by venipuncturePreoperative laboratory testing (e.g., coagulation studies) often obtained as part of preoperative access planning and may accompany mapping workflows.

    Related Modifiers

    6 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    91Modifier 91 — “Repeat Clinical Diagnostic Laboratory Test” — is appended when the exact same CPT laboratory test is performed more than once for the same patient on the same day because serial,…- Use modifier 91 when the exact same CPT laboratory test is performed more than once on the same patient on the same date because serial or repeated testing is medically necessary to monitor…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    207R00000XInternal Medicine PhysicianA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults…
    363A00000XPhysician AssistantA physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and…
    261QM0801XMental Health Clinic/Center (Including Community Mental Health Center)Ambulatory Health Care Facilities · Clinic/Center
    207YS0123XFacial Plastic Surgery PhysicianAn otolaryngologist who specializes in facial plastic surgery.
    246Z00000XOther Specialist/TechnologistGeneral classification identifying individuals trained on specific equipment and technical procedures in one of a collection of miscellaneous healthca…
    207VX0000XObstetrics PhysicianA physician who specializes in diagnosis, treatment, and management of patients with obstetric conditions.
    163WC0200XCritical Care Medicine Registered NurseNursing Service Providers · Registered Nurse

    Related Codes

    HCPCS-G9490-HOME-ASSESSMENT-NON-HOMEBOUND

    HCPCS G9490: Home Visit Patient Assessment for Non-Homebound Beneficiary

    HCPCS-G0008-INFLUENZA-VACCINE-ADMINISTRATION

    HCPCS G0008: Administration of Influenza Virus Vaccine

    HCPCS-G0009-PNEUMOCOCCAL-VACCINE-ADMINISTRATION

    HCPCS G0009: Administration of Pneumococcal Vaccine

    HCPCS-G0010-HEPATITIS-B-VACCINE-ADMINISTRATION

    HCPCS G0010: Administration of Hepatitis B Vaccine

    HCPCS-G0011-PREP-COUNSELING-HIV-RISK-REDUCTION-ADHERENCE

    HCPCS G0011: Individual PrEP Counseling, HIV Risk Assessment

    HCPCS-G0012-PRE-EXPOSURE-PROPHYLAXIS-INJECTION-HIV-PREVENTION

    HCPCS G0012: Injection of PrEP Drug for HIV Prevention

    HCPCS-G0013-PREP-INDIVIDUAL-COUNSELING-HIV-RISK-REDUCTION

    HCPCS G0013: Individual PrEP Counseling by Clinical Staff

    HCPCS-G0017-PSYCHOTHERAPY-CRISIS-FIRST-60-MINUTES-NON-OFFICE

    HCPCS G0017: Psychotherapy for Crisis, First 60 Minutes

    HCPCS-G0018-PSYCHOTHERAPY-CRISIS-ADDITIONAL-30-MINUTES-NON-OFFICE

    HCPCS G0018: Psychotherapy for Crisis, Additional 30 Minutes

    HCPCS-G0019-COMMUNITY-HEALTH-INTEGRATION-SDOH-CARE-COORDINATION

    HCPCS G0019: Community Health Integration, Person-Centered Assessment

    Showing 1–10 of 1996

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    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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