Summary & Overview
HCPCS A4648: Implantable Tissue Marker, Each
HCPCS Level II code A4648 denotes an implantable tissue marker supplied and billed per unit: “Tissue marker, implantable, any type, each.” These devices are used to mark lesions or surgical sites to aid in localization, image-guidance, and follow-up. Nationwide, tissue markers support diagnostic and therapeutic procedures across oncology, breast surgery, interventional radiology, and other specialties, making accurate coding important for clinical documentation and reimbursement consistency.
Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical uses and typical sites of service, plus benchmarking and payer-coverage summaries where available. The report highlights coding context, common modifiers and billing considerations, and any notable policy updates affecting supply billing for implantable markers.
This publication is intended to help billing managers, coders, and clinicians understand the clinical role of the device represented by A4648, common billing scenarios, and where to look for payer-specific coverage rules and documentation requirements. Data not provided in the input (such as specific payer fee schedules or ICD-10 linkage) is noted where applicable.
Billing Code Overview
HCPCS Level II code A4648 describes an implantable tissue marker, billed per marker as "Tissue marker, implantable, any type, each". This item-level supply is used to mark soft tissue or lesions for later identification, localization, or surgical guidance.
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Service type: Implantable tissue marker placement or supply
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Typical site of service: Ambulatory surgical centers, hospital outpatient departments, physician offices, and image-guided procedure suites where lesion localization or surgical planning is performed.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A patient undergoing breast-conserving surgery for a confirmed or suspected breast malignancy receives an implantable tissue marker (A4648) placed intraoperatively or during an image-guided percutaneous biopsy. Typical patients are adult women or men with a focal breast lesion identified on mammography, ultrasound, or MRI who require localization for future surgical excision or to mark the biopsy site for radiation planning. The clinical workflow: pre-procedure imaging identifies the target lesion; if a core needle biopsy is performed, an interventional radiologist or breast surgeon implants the tissue marker at the biopsy site immediately after tissue sampling. Alternatively, during lumpectomy, the surgeon may place a tissue marker to delineate margins for adjuvant radiation. Documentation includes indication (e.g., suspicious mass), informed consent, device type and quantity (A4648 — each marker), implantation site (laterality and quadrant), imaging confirmation of marker position, and any immediate complications. The marker facilitates later localization with imaging or wire/seed guidance and supports radiation therapy targeting and follow-up imaging correlation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier | Standard claim when no additional modifier applies |