Summary & Overview
CPT 0351T: Intraoperative OCT Imaging for Breast Tissue Margin Assessment
CPT code 0351T identifies intraoperative optical coherence tomography (OCT) imaging used to detect cancer cells at the margins of excised breast tissue or axillary lymph nodes. The technique offers immediate feedback to surgeons on margin status during breast-conserving procedures and axillary node evaluations, with potential implications for re-excision rates, operating time, and perioperative resource use. Nationally, adoption of intraoperative margin imaging is of interest to payers and surgical programs seeking to optimize oncologic outcomes and reduce downstream procedures.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical application and service setting, a summary of payer coverage considerations, typical billing mechanics, and relevant benchmarks where available. The publication highlights clinical context—how OCT serves as an immediate diagnostic adjunct in breast surgery—and outlines the principal areas that affect utilization and reimbursement policy, such as device classification, intraoperative use, and evidence on margin assessment.
This summary is intended for hospital billing teams, surgical leaders, and policy analysts evaluating the operational and coverage implications of CPT code 0351T. Data not available in the input will be noted in the detailed sections that follow.
Billing Code Overview
CPT code 0351T describes the use of optical coherence tomography (OCT) imaging to detect cancer cells at the margins of excised breast tissue or axillary lymph nodes. The procedure provides immediate, intraoperative feedback to the provider about whether surgical margins are free of malignant cells or if additional tissue excision is needed.
Service Type: Intraoperative diagnostic imaging / surgical margin assessment
Typical Site of Service: Operating room or procedure suite associated with breast cancer surgery or axillary lymph node dissection
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 58-year-old woman undergoes a partial mastectomy for a palpable breast mass diagnosed on core needle biopsy as invasive ductal carcinoma. Intraoperative optical coherence tomography (OCT) imaging is performed on the excised lumpectomy specimen margins to assess for residual tumor in real time. The surgical team receives immediate imaging feedback identifying any suspicious margin areas; if positive, the surgeon performs additional targeted tissue excision until OCT indicates clear margins. Typical sites of service include the hospital operating room or free‑standing ambulatory surgical center during breast-conserving surgery or during sentinel lymph node biopsy when intraoperative margin assessment of excised nodes is desired. The workflow involves specimen orientation and margin inking, transport to the OCT device in or adjacent to the OR, imaging by the provider or trained technician with real-time interpretation by the surgeon or pathologist, documentation of findings in the operative record, and communication of any intraoperative re-excision performed.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When only the interpreting physician component of OCT imaging is billed separately from the technical component |
TC | Technical component | When only the imaging device, technician, or facility resources are billed separately |
QK | Medical direction of 2–4 ancillary personnel | When the surgeon medically directs qualified ancillary staff performing the imaging procedure (specific to anesthesia/monitoring context but used in some ancillary supervision scenarios) |
QX | CRNA service with non‑physician anesthetist supervision | When a certified registered nurse anesthetist provides services under supervision relevant to operative case billing |
QY | Medical direction of one CRNA by an anesthesiologist | When an anesthesiologist medically directs a CRNA during the operative session |
22 | Unusual procedural services | When the OCT procedure requires substantially greater effort, time, or complexity than typical and documentation supports increased work |
52 | Reduced services | When the OCT imaging is attempted but is partially reduced in scope (e.g., limited margins imaged) |
53 | Discontinued procedure | When OCT imaging is started but discontinued due to patient safety or intraoperative findings |
62 | Two surgeons | When two surgeons with distinct specialties perform portions of the operation requiring shared intraoperative OCT interpretation |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist services in lieu of the physician | When an assistant practitioner performs the OCT imaging under appropriate supervision and billing rules permit |
FX | Primary procedure performed at an unplanned return to the OR within 90 days | When re-excision in the OR during the same surgical episode uses OCT on the returned specimen (modifier usage per payer rules) |
FY | Primary procedure performed with a secondary unrelated procedure | When OCT imaging is performed in the same session as an unrelated primary procedure (subject to payer bundling rules) |
SH | Requesting/ordering physician example | When specific order/coordination codes require identification of the ordering provider (used in some reporting contexts) |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207Q00000X | General Surgery | Most lumpectomies and intraoperative OCT during breast conserving surgery are performed or supervised by general surgeons with breast specialty training |
| 207XS0126X | Surgical Oncology | Surgical oncologists commonly perform breast cancer resections and use intraoperative margin assessment technologies |
| 207RG0300X | Plastic Surgery | Plastic surgeons may participate when oncoplastic techniques are used and intraoperative margin assessment informs reconstruction |
| 2085P0202X | Pathology | Pathologists may provide interpretation support for intraoperative imaging and correlate OCT findings with frozen section or permanent histology |
| 207L00000X | Obstetrics & Gynecology - Gynecologic surgery overlap rare | Occasionally involved if gynecologic oncology setting interoperable technologies are utilized (less common) |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
C50.911 | Malignant neoplasm of unspecified site of right female breast | Represents primary breast cancer for which lumpectomy and intraoperative margin assessment are indicated |
C50.912 | Malignant neoplasm of unspecified site of left female breast | As above for left-sided breast cancer requiring excision and margin evaluation |
C50.111 | Malignant neoplasm of central portion of right female breast | Tumor location where surgical excision with margin assessment is performed, OCT aids intraoperative decisions |
C50.112 | Malignant neoplasm of central portion of left female breast | As above for left-sided central tumors |
C50.921 | Malignant neoplasm of unspecified site of male breast | Male breast cancer cases also undergo excision with possible intraoperative margin imaging |
D05.10 | Unspecified intraductal carcinoma in situ of right breast | DCIS often requires wide local excision with margin assessment; OCT can assist in assessing margin status intraoperatively |
D05.11 | Unspecified intraductal carcinoma in situ of left breast | DCIS on the left side with similar relevance |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
19120 | Excision of cyst, fibroadenoma, or other benign or malignant tumor, aberrant breast tissue, duct lesion; open, one or more lesions, unilateral | Commonly performed before or instead of lumpectomy; OCT may be used intraoperatively when excising suspicious lesions |
19301 | Mastectomy, partial (e.g., lumpectomy, tylectomy, quadrantectomy, segmental mastectomy) | Primary procedure during which intraoperative OCT margin assessment is often performed to confirm clear margins |
38525 | Biopsy or excision of lymph node(s); open, axillary | Sentinel or axillary node excision may be performed in the same operative session; OCT can be applied to excised nodes to assess involvement intraoperatively |
88332 | Pathology consultation during surgery (frozen section) | Frozen section is an alternative or adjunct to OCT for intraoperative margin assessment; both may be used to guide immediate re-excision |
88342 | Immunohistochemistry, per specimen; initial single antibody stain | Used postoperatively to further characterize tumor cells when intraoperative OCT or frozen section suggests malignancy |