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    OpenPayerBilling CodesIntroduction Procedures on the BreastCPT cpt-19284-stereotactic-breast-localization-add-on
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    CPT 19284: Stereotactic Add-On Breast Localization, Additional Lesion

    Medicare pays $189 on average nationally for this procedure.

    CPT code 19284 is an add-on stereotactic breast localization procedure for placement of an additional localization device (clip, metallic pellet, wire/needle, or radioactive seed) at a second lesion during the same stereotactic session; service type: image-guided breast localization (add-on), typical site of service: outpatient radiology or breast imaging suite within an ambulatory surgical or clinic setting.

    For related coverage guidance, see recent payer policy updates: Removal of Implantable, Outpatient Surgical Procedures - Site of Service, Surgical Procedures.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 58-year-old female with a screening mammogram showing a suspicious calcification cluster in the right breast is scheduled for stereotactic localization and subsequent surgical excisional biopsy. During the stereotactic session the radiologist places a localization device (for example, a metallic clip) at the target lesion. In the same procedure the radiologist identifies an additional small suspicious area in the same breast and places a second localization device at that additional lesion during the same stereotactic session; the second placement is reported with add-on code 19284 to indicate localization of an additional lesion.

    The clinical workflow: pre-procedure consent and review of imaging; stereotactic breast positioning and core or marker placement at the initial lesion (primary code, billed separately); intra-procedural imaging to confirm placement; identification of the additional lesion on the same stereotactic session; placement of the additional localization device documented as an add-on service; post-procedure imaging to document positions; procedural note specifying devices placed, laterality, and that placements occurred at the same session. Typical preauthorization and bundling rules are checked based on payer policies prior to billing.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    19281Stereotactic placement of breast localization device (eg, clip, metallic pellet), first lesion; percutaneousThis is the primary code used to report the initial stereotactic localization at the same session; 19284 is reported in addition when a device is placed at an additional lesion.
    19282Stereotactic placement of breast localization device, first lesion; open or other approach (alternate descriptor)Alternative primary localization code in some workflows; used for initial lesion when different technique is documented.
    19283Stereotactic placement of breast localization device, percutaneous, second and additional lesions — first add-onWhen more than one additional lesion is localized, sequential add-on codes may be used as defined by coding guidelines; 19284 specifically describes an add-on for placement at an additional lesion at the same session.
    19301Partial mastectomy (lumpectomy), local excision of matter including lesionOften performed after localization; the surgeon uses localization devices placed under stereotactic guidance to guide excision.
    76942Ultrasonic guidance for needle placement (eg, biopsy, aspiration, injection), imaging supervision and interpretationMay be used if ultrasound guidance is used in conjunction with stereotactic localization for needle or marker placement.

    Related Modifiers

    7 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    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…
    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…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207P00000X
    207K00000X
    363LF0000X
    163WL0100X
    171WV0202X
    2080S0010X
    207PP0204X
    207RE0101X

    Related Payer Policy Updates

    Specialty: General Surgery1 / 3

    10 rows

    PolicyPayerEffective Date
    Removal of ImplantableBlue Cross Blue Shield - Rhode Island2026-10-01
    Outpatient Surgical Procedures - Site of ServiceUnitedHealthcare2026-09-01
    Surgical ProceduresUnitedHealthcare2026-09-01
    Site of Service Ambulatory Service Center (ASC) Select — Surgical or Diagnostic Procedures in AdultsPremera Bluecross2026-09-01
    Site of Service Ambulatory Surgical Center (ASC) Select — Surgical or Diagnostic Procedures in AdultsPremera Bluecross2026-09-01
    Site of Service Ambulatory Service Center (ASC) SelectPremera Bluecross2026-09-01
    Site of Service Ambulatory Surgical Center (ASC) Select — Site of Service for Ambulatory Surgical Procedures (ASC Select)Premera Bluecross2026-09-01
    Site of Service Ambulatory Service Center (ASC) SelectPremera Bluecross2026-09-01
    Medical Necessity Guidelines Inpatient Surgical CareMass General Brigham Health Plan2026-08-01
    Outpatient Surgical Procedures - Site of Servicesierra health and life2026-08-01

    Related Codes

    CPT-19281-BREAST-LESION-LOCALIZATION-MAMMOGRAPHIC-GUIDANCE

    CPT 19281: Mammographic-Guided Breast Lesion Localization, First Lesion

    CPT-19282-BREAST-LOCALIZATION-DEVICE-PLACEMENT-MAMMOGRAPHIC-GUIDANCE

    CPT 19282: Mammographic-Guided Breast Localization Add-On

    CPT-19283-STEREOTACTIC-BREAST-LESION-LOCALIZATION-FIRST-LESION

    CPT 19283: Stereotactic Breast Lesion Localization, First Lesion

    CPT-19285-BREAST-LESION-LOCALIZATION-ULTRASOUND-GUIDED-FIRST-LESION

    CPT 19285: Ultrasound-Guided Breast Lesion Localization, First Lesion

    CPT-19286-ULTRASOUND-GUIDED-BREAST-LOCALIZATION-ADD-ON

    CPT 19286: Ultrasound-Guided Breast Localization Device Placement

    CPT-19287-MRI-GUIDED-BREAST-LESION-LOCALIZATION

    CPT 19287: MRI-Guided Breast Lesion Localization, First Lesion

    CPT-19288-MRI-GUIDED-ADD-ON-BREAST-LOCALIZATION

    CPT 19288: MRI-Guided Breast Localization, Add-on

    CPT-19294-TUMOR-CAVITY-PREPARATION-IORT-PARTIAL-MASTECTOMY

    CPT 19294: Tumor Cavity Preparation for Intraoperative Radiation Therapy

    CPT-19296-BALLOON-CATHETER-PLACEMENT-BRACHYTHERAPY-PARTIAL-MASTECTOMY

    CPT 19296: Balloon Catheter Placement for Breast Radiotherapy After Partial Mastectomy

    CPT-19297-BALLOON-CATHETER-PLACEMENT-PARTIAL-MASTECTOMY-RADIOTHERAPY

    CPT 19297: Balloon Catheter Placement for Radiotherapy at Partial Mastectomy

    Showing 1–10 of 11

    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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