CCSD code B2700 – Subcutaneous mastectomy with implant

Key takeaways

CCSD Code B2700 covers subcutaneous mastectomy with immediate prosthesis placement in a single operative episode.

The code applies to both therapeutic and prophylactic (risk-reducing) mastectomy with immediate reconstruction, not to staged or delayed procedures.

All four major UK private insurers require pre-authorisation before an elective B2700 procedure. Proceeding without it is the most common denial trigger.

Pabau’s practice software pairs a built-in CCSD code library with pre-authorisation tracking, so private breast surgical practices submit cleaner B2700 claims.

CCSD Code B2700: definition and official descriptor

The CCSD code schedule defines CCSD Code B2700 as “Subcutaneous mastectomy with immediate implant.” The surgeon excises the breast glandular tissue through a skin-preserving approach. A permanent prosthesis goes in during the same anaesthetic episode.

B2700 sits in Chapter 7 (Breast) of the CCSD schedule, in section 7.3 Reconstruction. The Clinical Coding and Schedule Development Group maintains the schedule. UK private medical insurers (PMIs) such as Bupa, AXA Health, Aviva and VitalityHealth use it to code procedures. Our Bupa CCSD code guide shows how Bupa applies the codes across surgical specialties.

The critical distinction coded within B2700 is immediacy. The subcutaneous mastectomy and the implant happen in the same operative episode. When reconstruction follows an earlier mastectomy in a separate admission, the delayed route is B3014 for an expandable prosthesis or B3015 for a fixed one. Confusing immediate with delayed reconstruction produces a code mismatch that insurers query.

What the procedure involves: subcutaneous mastectomy with immediate implant

Subcutaneous mastectomy with immediate implant reconstruction follows a consistent operative sequence, though individual surgical technique varies by indication, patient anatomy, and surgeon preference.

1. Incision planning. The surgeon marks an inframammary, periareolar, or lateral incision depending on the planned approach. Nipple-sparing procedures require careful incision placement to maintain vascularity to the nipple-areola complex.
2. Glandular tissue excision. The surgeon dissects the breast parenchyma from the overlying skin flaps and from the pectoralis major fascia or muscle, preserving the skin envelope throughout. A nipple-sparing mastectomy (NSM) retains the nipple-areola complex. A skin-sparing mastectomy (SSM) removes it with the specimen.
3. Pocket creation. The surgeon develops a submuscular or prepectoral pocket for implant placement. When the surgeon uses acellular dermal matrix (ADM), they suture it to the pectoralis major inferiorly and laterally, defining the lower pole.
4. Prosthesis insertion. The surgeon places a permanent silicone or anatomical implant directly into the pocket. They select the implant size and projection intraoperatively, based on the skin envelope volume and patient discussion.
5. Closure and drain placement. The surgeon closes the wound in layers and places one or two closed suction drains. The specimen goes for histopathological analysis.

B2700 is one coding option for NSM or SSM with an immediate implant, alongside B3012 and B3013. Choose the code whose descriptor matches the operation recorded in the note. Where the surgeon performs no reconstruction, code a skin-sparing or nipple-sparing mastectomy as B2760. Code a subcutaneous mastectomy with no implant as B2752.

Removing the whole breast and overlying skin is a different procedure from the subcutaneous mastectomy in B2700. Code a modified radical mastectomy performed without lymph node sampling as B2743.

Clinical indications for B2700

The indication documented in the operative note affects how insurers assess the claim. It decides whether the procedure sits within the patient’s policy benefit for therapeutic or prophylactic surgery. The list below gives the three principal indications that support a B2700 submission.

• Therapeutic mastectomy for early-stage breast cancer. Patients with unifocal or multifocal disease who are not suitable for breast-conserving surgery. Reference the histological confirmation of malignancy in the clinical notes.
• Risk-reducing (prophylactic) mastectomy in BRCA carriers. Patients with a confirmed BRCA1 or BRCA2 pathogenic variant who elect bilateral prophylactic mastectomy. A genetics report and multidisciplinary team (MDT) decision should accompany the claim. Some insurers require a separate letter confirming the genetic diagnosis. Carrying a BRCA mutation does not automatically trigger insurer authorisation. Insurers assess each case against the patient’s policy terms and their own clinical threshold for prophylactic procedures.
• Therapeutic mastectomy following neoadjuvant treatment. Where chemotherapy or endocrine therapy precedes surgery, the histology at diagnosis and the post-treatment clinical picture both need documenting. Some insurers require the pathology report from the diagnostic biopsy and the MDT minutes referencing the decision to proceed with mastectomy.

Gender-affirming chest surgery may use a similar operative technique, but the clinical, regulatory, and insurer policy context differs significantly from oncological and prophylactic indications. Practices coding gender-affirming chest surgery should seek specialist coding guidance rather than applying B2700 from a breast oncology framework.

What B2700 includes and what it does not

Knowing the scope of CCSD Code B2700 prevents under-claiming, where separately codable work goes unbilled. It also prevents over-claiming, where you bundle in procedures that need their own codes. The CCSD technical guide sets out the general bundling principles that apply across all surgical codes.

The implant supply cost is the most contested item. Some insurers include it within the overall procedure fee. Others require the surgeon or hospital to submit a separate implant supply code or cost schedule. Confirm the position with each insurer before submitting the claim.

CCSD Code B2700 vs B3013, B3015 and neighbouring codes

Insurers often query a B2700 claim because the coder picked the wrong neighbouring Chapter 7 (Breast) code. The table maps the closest codes and the scenarios that separate them. The full schedule sits in our CCSD code directory.

B2700 requires the mastectomy and the implant in one episode, while B3014 and B3015 cover reconstruction that includes a delayed operation. A note reading “mastectomy and reconstruction” without confirming one anaesthetic pushes coders towards a delayed code.

The grid below sorts the neighbouring codes by timing and prosthesis type.

Codes commonly billed alongside B2700

Surgeons legitimately perform several procedures in the same session as B2700. Code and bill them separately rather than absorbing them into the mastectomy code. Payer-specific bundling rules vary, so confirm them with each insurer before submitting.

• Sentinel lymph node mapping. Code axillary staging in the same session as B2700 separately. Use T9000, T9020, T9021 or T9030, the sentinel node mapping codes for breast cancer, whichever matches the procedure. It is standard practice for early invasive breast cancer and is not bundled into the mastectomy code.
• Acellular dermal matrix (ADM) or biological mesh. CCSD carries combined codes for prosthesis reconstruction with ADM: B2818 and B2819 for expandable prostheses, and B2917 and B2918 for fixed prostheses. Where ADM defines the implant pocket, check whether one of these descriptors fits the operation better than B2700. Billing for the ADM material itself depends on the insurer, so verify before claiming.
• Assistant surgeon fees. Complex reconstructions frequently require a plastic or reconstructive surgeon to work alongside the breast surgeon. Assistant surgeon codes follow each insurer’s published co-surgery rules, typically a percentage of the principal fee.
• Anaesthetist codes. The anaesthetist submits independently using the relevant CCSD anaesthetic codes based on time units and base units for the procedure.
• Contralateral symmetrisation. If the opposite breast is surgically adjusted for symmetry in the same session, submit a separate CCSD code for that additional procedure.

Documentation requirements for a successful B2700 claim

UK private insurers reviewing a B2700 claim look for specific clinical evidence in the operative note and supporting record. Missing even one element can trigger a request for additional information, which delays payment. Digital operative notes and clinical records linked directly to the invoice remove the manual step of attaching supporting documents before submission.

The operative note for a B2700 claim must include all of the following:

• Confirmation that reconstruction was immediate. Use explicit language: “breast implant placed in the same operative episode” rather than relying on the coder to infer timing from the procedure sequence.
• Implant type and size. Record the manufacturer, implant reference number, volume (in cc or ml), projection, and whether the device is round or anatomical. This supports both the clinical record and any implant supply billing.
• Surgical approach and technique. Specify the incision used, whether the approach was nipple-sparing or skin-sparing, and the plane of dissection (prepectoral or subpectoral). Note whether ADM was used and its brand name.
• Clinical indication. State whether the procedure was therapeutic (with histological diagnosis) or prophylactic (with reference to the genetics report and MDT decision).
• Named surgeon(s). Confirm the lead surgeon and any assistant surgeon or co-surgeon present. If a plastic and reconstructive surgeon assisted, document their involvement to support assistant surgeon billing.
• Pre-authorisation reference number. Transcribe the insurer-issued authorisation number into the clinical record. Insurers routinely reject claims without an authorisation reference before clinical review even begins.

Pre-authorisation: what UK insurers require for B2700

All four principal UK private medical insurers require pre-authorisation before the surgeon performs an elective B2700 procedure. Proceeding without authorisation is the single most preventable cause of non-payment. In most cases, insurers grant retrospective authorisation only for emergencies, not for elective breast surgery scheduled in advance.

The following summarises the pre-authorisation requirements for the major UK PMIs. Verify current requirements directly with each insurer’s provider portal, as referral and documentation thresholds change annually.

• Bupa. Bupa requires a referral from a Bupa-recognised GP or specialist. The clinical submission must include the MDT decision, imaging (mammography or MRI), histology or genetics report, and the proposed CCSD code(s). Bupa publishes its current procedure code requirements through its online code search portal.
• AXA Health. Submit pre-authorisation through the AXA Health specialist portal. For prophylactic mastectomy in BRCA carriers, AXA typically requires the genetics referral and written confirmation of the pathogenic variant. It also asks for evidence of MDT review recommending risk-reducing surgery.
• Aviva. Claims require pre-authorisation through the Aviva provider portal. Aviva publishes its own procedure fee schedule on its practitioner pages, and its fees may differ from standard CCSD guide prices.
• VitalityHealth. Pre-authorisation follows the Vitality provider pathway. Standard oncological benefits generally cover therapeutic mastectomy for a cancer diagnosis. Prophylactic mastectomy in BRCA carriers may face additional underwriting review, depending on the patient’s policy terms.

Common reasons B2700 claims are denied

Denial patterns for B2700 are consistent across UK insurers. Most rejections stem from administrative errors that are preventable with robust pre-submission checks, not from clinical disputes about whether the procedure was appropriate.

• Missing or late pre-authorisation. It is the most frequent denial trigger. Most insurer systems automatically reject a claim submitted after the procedure without an authorisation number, before it reaches a clinical assessor.
• Immediate-vs-delayed code mismatch. Submitting B3014 or B3015 for an immediate reconstruction is a direct mismatch. So is submitting B2700 when the implant went in at a later admission. The operative note and admission history show whether mastectomy and implant shared one episode, so insurers can spot the error.
• Implant cost bundled incorrectly. Some practices include the implant supply cost within the B2700 fee when the insurer expects a separate supply code or cost schedule. Others submit a separate implant line when the insurer bundles it. Check each insurer’s current position before submitting.
• Insufficient operative note. A note that omits same-episode reconstruction, implant size, surgical approach or clinical indication gives the insurer grounds to request further information. That request pauses the payment clock.
• Out-of-benefit policy exclusions. Prophylactic procedures are not covered by all PMI policies. If the patient’s policy does not include cover for risk-reducing surgery, the claim will be declined regardless of clinical appropriateness. Benefit verification before the procedure date is essential.
• Duplicate billing with assistant surgeon codes. Where the assistant surgeon submits their own code and the lead surgeon’s invoice also includes an assistant surgeon charge, insurers reject one or both lines. Ensure only the assistant submits the assistant code.

Bilateral procedures: coding B2700 for both breasts

Surgeons perform bilateral subcutaneous mastectomy with immediate implant reconstruction in a single operative session, most commonly for BRCA carriers undergoing risk-reducing surgery. Coding and billing the bilateral case requires additional attention because each insurer applies its own bilateral fee rules.

B2700 has no bilateral variant. CCSD codes bilateral mastectomy and immediate reconstruction separately, as B3042 with expandable prostheses and B3043 with fixed prostheses. Check whether one of those descriptors matches the operation before listing B2700 for each side.

Where an insurer accepts B2700 per side, it applies its own fee rules to the second side, so confirm them against its current provider schedule.

Documentation for bilateral cases must include separate implant records for each side, covering size, type and manufacturer reference. The operative note must confirm the surgeon operated on both breasts in the same session. Include the genetics or MDT documentation that justified bilateral surgery. Some insurers require the pre-authorisation to specify bilateral surgery explicitly rather than inferring it from a unilateral authorisation.

Is B2700 used for nipple-sparing mastectomy?

B2700 is one option for nipple-sparing mastectomy (NSM) with an immediate implant, alongside B3012 and B3013. Pick the code whose descriptor matches the operation. Check the type of prosthesis and the extent of the mastectomy in the note. Without reconstruction, code a skin-sparing or nipple-sparing mastectomy as B2760 instead.

Record the approach in the operative note, NSM (nipple-areola complex preserved) or SSM (nipple-areola complex removed). Code nipple areola complex reconstruction at a later admission as B3580, not B2700. That holds whatever approach the original mastectomy used.

How Pabau supports CCSD billing for B2700

Private breast surgical practices submitting B2700 claims deal with a billing workflow that spans clinical documentation, pre-authorisation tracking, code selection, invoice generation, and denial management. Each of those steps is a potential failure point when handled across disconnected systems. Pabau consolidates them into a single platform built for UK private healthcare providers.

• Built-in CCSD procedure code library. Pabau’s claims management tools include the CCSD code set. Coders select B2700 and any co-surgery codes from a searchable library instead of a separate reference spreadsheet.
• Pre-authorisation tracking. Each patient record includes a pre-authorisation field. Pabau stores the authorisation number against the appointment before the procedure date, so the invoice never leaves the practice without it.
• Invoice generation linked to the clinical record. When the operating surgeon completes the operative note in Pabau, the billing team can generate the invoice from the same record. This eliminates the transcription errors that arise when you manage clinical and billing data separately.
• Audit trail for claim documentation. Pabau timestamps every edit to a patient record, invoice, or pre-authorisation entry and attributes it to a named user. If an insurer requests additional documentation, the complete record is available immediately rather than requiring a manual search across filing systems.

Practices that run plastic surgery alongside breast oncology need only one Pabau subscription. Each surgical team works in the same system, with no separate tool per specialty.

Stop losing revenue to avoidable B2700 denials

Pabau gives private breast surgical practices a built-in CCSD code library and pre-authorisation tracking on each patient record. Invoices pull straight from clinical documentation, so fewer claims come back rejected.

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Conclusion

Treat the operative note as the place where B2700 is won or lost. A note that names the prosthesis type and says it went in under the mastectomy anaesthetic settles the code. The choice between B2700, B3012, B3013 and the delayed codes then follows from it.

The trade-off is a few extra lines dictated in theatre against a queried claim and a second submission. Put the authorisation reference on the record before the procedure date, and settle each insurer’s implant-cost position before you invoice.

Book a demo to see how Pabau keeps the authorisation number, operative note and invoice on one patient record for your breast surgery claims.

Continue your research

Need a reference for other Bupa CCSD codes? Bupa CCSD codes guide covers the full schedule structure, how Bupa applies codes, and common billing rules across specialties.

Placing an expander instead of a fixed implant? CCSD Code B3012 explains how mastectomy with immediate expandable prosthesis reconstruction is coded and documented.

Coding other breast procedures? CCSD Code B2810 covers segmental resection and quadrantectomy, the breast-conserving alternatives to mastectomy.

Checking what an insurer pays for a code? Bupa procedure codes and fee schedule lists Bupa codes alongside their published fees in one reference.

Working a rejected claim? Denial codes in medical billing explains what each denial code means and how to fix the claim before resubmitting.

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