Summary & Overview
CPT 49411: Abdominal Fiducial or Dosimeter Placement for Radiation Guidance
CPT code 49411 covers the placement of fiducial markers or a dosimeter within the abdominal cavity adjacent to a known tumor site to guide and measure radiation therapy. This procedure supports accurate targeting for external-beam radiotherapy and can improve treatment precision for abdominal soft-tissue malignancies. Nationally, the code is relevant to radiation oncology, interventional radiology, and surgical teams involved in multidisciplinary cancer care.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical indications, the typical procedural setting, and payer coverage patterns where available. The publication outlines benchmarks for utilization and reimbursement trends, summarizes policy and coding updates affecting the code, and provides clinical context for when fiducial or dosimeter placement is used in abdominal radiation planning.
The content is intended for administrators, coders, and clinical leaders seeking a national perspective on coding, coverage, and the clinical role of abdominal fiducial/dosimeter placement in radiation therapy. Data not available in the input is noted where relevant in detailed sections.
Billing Code Overview
CPT code 49411 describes the placement of one or more small metal markers or fiducial devices within the abdominal cavity adjacent to a previously identified tumor site to guide radiation therapy, or the placement of a dosimeter to measure radiation delivered to targeted soft tissue. This procedure is intended to assist precise localization and dosimetric assessment during external-beam radiation treatment planning and delivery.
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Service type: Image-guided localization and dosimetry support for targeted radiation therapy
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Typical site of service: Hospital outpatient department or ambulatory surgical center, often performed in an operating room, interventional radiology suite, or similar procedural setting
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with a localized intra-abdominal or pelvic soft-tissue tumor (for example, a hepatic metastasis, pancreatic tumor, or pelvic sarcoma) who is scheduled to receive image-guided external beam radiation or stereotactic body radiation therapy. The patient has completed diagnostic imaging (CT and/or MRI) and multidisciplinary tumor board review confirming the tumor target. On the day of the procedure the interventional radiologist or surgical oncologist places one or more small metal fiducial markers or a dosimeter into the abdominal cavity adjacent to the previously identified tumor using image guidance (ultrasound, CT, or fluoroscopy) under conscious sedation or general anesthesia as clinically indicated. Post-placement imaging (intra-procedural or immediate post-procedure radiograph/CT) documents marker position relative to the target to allow radiation oncology to fuse planning scans and track tumor motion during treatment. The workflow includes pre-procedure consent and assessment, sterile placement of markers, confirmation imaging, recovery monitoring, and transmission of marker coordinates/images to the radiation oncology planning team for treatment simulation and delivery.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Normal, active postoperative care | When reporting the code during the global period for an unrelated service requiring separate evaluation and management (rare for this procedure). |