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    OpenPayerBilling CodesRadiation Hyperthermia TreatmentCPT cpt-77615-invasive-tumor-directed-hyperthermia-multiple-probes
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    CPT 77615: Insertion of Probe Array for Tumor Hyperthermia

    Medicare pays $741 on average nationally for this procedure.

    CPT code 77615 describes insertion of an array of more than five probes or needles into a tumor to deliver internal hyperthermia, a tumor-heating procedure; service type: invasive thermal ablation/thermal therapy via probe array; typical site of service: hospital inpatient or outpatient surgical suite or interventional radiology suite for image-guided tumor-directed thermal therapy.

    For related coverage guidance, see recent payer policy updates: Intraosseous Basivertebral Nerve Ablation for Child Health Plus (CHP) and Essential Plan (EP) Members, Acupuncture Services Payment Policy, Drug Testing in Pain Management and Substance Use Disorder.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A patient with a focal solid tumor (commonly hepatic, pelvic, or deep soft-tissue tumor) is referred for image-guided interstitial hyperthermia using multiple invasive probes. Typical patient: a 62-year-old with recurrent colorectal liver metastases who previously underwent systemic chemotherapy and now presents with a 4–6 cm hepatic lesion not amenable to resection. Pre-procedure workup includes cross-sectional imaging (contrast CT or MRI), laboratory evaluation (CBC, coagulation panel, liver function), and multidisciplinary review. The procedure is performed in an interventional radiology or radiation oncology suite with image guidance (CT or ultrasound) under moderate sedation or general anesthesia. The provider inserts an array of more than five probes or needles into the tumor to deliver localized heating to cytotoxic temperatures, monitoring probe placement and thermal dose in real time. Post-procedure observation includes pain control, monitoring for bleeding or infection, and short-term imaging follow-up to assess treatment response and identify complications. Documentation includes indication, imaging guidance used, number and type of probes inserted, thermal parameters, complications, anesthesia type, and post-procedure instructions.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    76942Ultrasonic guidance for needle placement (e.g., biopsy, aspiration, injection, localization device), imaging supervision and interpretationUsed when ultrasound guidance assists probe insertion for thermal therapy
    77012CT guidance for needle placement (requires image guidance)Used when CT imaging is used to guide placement of probes into deep lesions
    43200Esophagoscopy, flexible, transoral; diagnostic, with or without collection of specimen(s) by brushing or washing (example of endoscopic guidance when applicable)In select anatomic sites, endoscopic techniques may assist probe placement or tumor access
    49423Placement of peritoneal drainage catheter, percutaneous; with imaging guidancePerformed when peritoneal access or drainage is required in conjunction with abdominal tumor procedures
    77617Hyperthermia (external array), per treatment sessionExternal hyperthermia codes used when combining external applicators with interstitial hyperthermia for multimodality treatment
    47370Laparoscopy, surgical; cholecystectomy (example intra-abdominal operative access code)Representative intra-abdominal operative access codes when hyperthermia is performed in an operative setting

    Related Modifiers

    12 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…
    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…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    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…
    56Modifier ‑56 indicates the reporting provider furnished only the preoperative management for a surgical procedure and did not perform the intraoperative or postoperative care. It is used in…- Use Modifier -56 when a provider performs only the preoperative management in a split‑care situation (one physician manages preop care while a different physician performs the intraoperative…
    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…
    73Modifier 73 indicates a facility-level outpatient hospital or ASC procedure that was discontinued after the patient was prepared and taken to the procedure/operating room but before any anesthesia…- When to use: Apply CPT modifier 73 on the FACILITY (outpatient hospital or ASC) claim when the patient has been fully prepared and physically taken into the procedure/operating room but the…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…

    Showing 1–10 of 12

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    208D00000X
    2084P0800X
    208000000X
    363LP0200X
    363A00000X
    2086P0122X
    2084E0001X
    207RA0000X

    Related Payer Policy Updates

    Specialty: Pain Management1 / 3

    10 rows

    PolicyPayerEffective Date
    Intraosseous Basivertebral Nerve Ablation for Child Health Plus (CHP) and Essential Plan (EP) Membersuniverahealthcare2027-01-01
    Acupuncture Services Payment Policyfallon_community_health_plan_inc2026-12-01
    Drug Testing in Pain Management and Substance Use Disorderbcbsvermont2026-11-01
    Lysis of Epidural Adhesionsexcellus_health_plan_inc2026-10-15
    Intradiscal Proceduresexcellus_health_plan_inc2026-10-15
    Radiofrequency Facet and Sacroiliac Joint Ablation/ Denervationuniverahealthcare2026-10-15
    Facet Joint Injections/ Medial Branch Blocksuniverahealthcare2026-10-15
    Lysis of Epidural Adhesions (Epidural Adhesiolysis)univerahealthcare2026-10-15
    Epidural Steroid Injections / Selective Nerve Root Block (SNRB)univerahealthcare2026-10-15
    Prolotherapyuniverahealthcare2026-10-15

    Related Codes

    CPT-77600-SUPERFICIAL-HYPERTHERMIA-UP-TO-4CM

    CPT 77600: Superficial Hyperthermia, Up to 4 cm

    CPT-77605-DEEP-THERAPEUTIC-HYPERTHERMIA

    CPT 77605: Deep Tissue Hyperthermia Treatment

    CPT-77610-INTRATUMORAL-HYPERTHERMIA-PROBE-INSERTION

    CPT 77610: Intratumoral Hyperthermia Probe Placement

    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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