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    v1.0.28
    OpenPayerBilling CodesProcedures / Professional ServicesHCPCS hcpcs-g6017-intrafraction-motion-tracking-radiation-therapy
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    HCPCS G6017: Intra-fraction Localization and Tracking During Radiation Therapy

    HCPCS Level II code G6017 describes intra-fraction localization and tracking of target or patient motion during delivery of radiation therapy (for example, 3D positional tracking, gating, or 3D surface tracking) billed per fraction; service type is radiation therapy delivery support and the typical site of service is an outpatient radiation oncology department or hospital-based radiation therapy suite where image-guidance and motion-management are used during treatment fractions.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 65-year-old with locally advanced left-sided lung cancer scheduled for daily external beam radiation therapy. During each fraction, the radiation oncology team uses intra-fraction localization and tracking to monitor tumor and patient motion caused by respiration and patient movement. The workflow begins with patient arrival and positioning on the treatment couch, immobilization device placement, and image guidance with cone-beam CT or planar imaging for initial localization. Prior to beam-on, a surface or internal marker-based tracking system is activated to continuously monitor three-dimensional positional changes. If motion exceeds predefined thresholds, the system either gates the beam or prompts therapist intervention and repositioning. Documentation includes the tracking modality, fraction number, any gating events or interruptions, and whether motion exceeded tolerance limits. Billing uses G6017 reported once per fraction for the intra-fraction localization and tracking service.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    77336Radiation treatment management, stereotactic body radiotherapy, per course (list separately per payer rules)Often used for SBRT courses where intra-fraction localization and tracking (G6017) is commonly applied to manage respiratory motion.
    77295Radiation physics consultation, per treatment courseInvolves physics review and gating/tracking system configuration relevant to intra-fraction monitoring.
    77014Computed tomography guidance for radiation therapy planning and target localizationPreceding localization imaging used in the setup phase before intra-fraction tracking during delivery.
    77435Radiation treatment delivery, complex, per fractionRepresents complex treatment fractions where intra-fraction tracking is frequently employed to ensure accuracy.
    77427Radiation treatment management, weekly management during course of radiation therapyOngoing management that documents need for tracking interventions and response during the treatment course.

    Related Modifiers

    8 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    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…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    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…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    2084P0800XPsychiatry PhysicianA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, …
    221700000XArt Therapist(1) An individual who uses art to achieve the therapeutic goals of symptom relief, emotional integration, and recovery from or adjustment to illness o…
    276400000XSubstance Use Disorder Rehabilitation Hospital UnitA distinct part of a hospital that provides medically monitored, interdisciplinary addiction-focused treatment to patients/clients who have psychoacti…
    363LA2200XAdult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers · Nurse Practitioner
    343800000XSecured Medical Transport (VAN)A public or privately owned transportation service with vehicles, specially equipped to provide enhanced safety, security and passenger restraint, and…
    261QM1101XMilitary and U.S. Coast Guard Ambulatory Procedure Clinic/CenterThat part of a "fixed" (non-temporary, non-deployed) DoD or Coast Guard entity furnishing surgical procedures requiring medically supervised recovery.…
    261QR0208XMobile Radiology Clinic/CenterAmbulatory Health Care Facilities · Clinic/Center
    2081P0004XSpinal Cord Injury Medicine PhysicianA physician who addresses the prevention, diagnosis, treatment and management of traumatic spinal cord injury and non-traumatic etiologies of spinal c…

    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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