Dr Scott J Turner | Specialist Plastic Surgeon (FRACS) | Sydney
The short answer: sometimes, but only when the fat grafting is for a medical reason rather than a cosmetic one. Medicare has two specific MBS item numbers for autologous fat grafting to the breast (45534 and 45535), each with strict eligibility criteria tied to conditions like breast cancer reconstruction, tuberous breast, Poland Syndrome, or significant developmental asymmetry. If your reason for wanting fat grafting is purely aesthetic (a size increase, body contouring, fuller cleavage), Medicare will not cover it.
This guide walks through when Medicare actually applies to breast fat grafting, what each item number covers, what documentation you’ll need, and what out-of-pocket costs to realistically expect. I’m Dr Scott J Turner, a Specialist Plastic Surgeon (FRACS) at our Bondi Junction and Manly clinics in Sydney.
The Two MBS Items You Need to Know About
Two MBS items cover autologous fat grafting to the breast in specific medical contexts. Both commenced on 1 November 2021 and remain current. They don’t apply to cosmetic breast augmentation fat transfer.
MBS Item 45534: Unilateral Breast Fat Grafting
This item covers fat grafting to one breast in the following situations: correcting defects arising from breast cancer treatment or prevention (where there are contour defects, 20% or greater volume asymmetry, post-treatment pain, or poor prosthetic coverage); preparing thin or irradiated skin flaps after mastectomy in patients planning breast reconstruction; reconstructing the breast after breast cancer; or correcting developmental disorders of the breast.
Up to four services per side are allowed for a total treatment of a single breast, with appropriate documentation and photographic or diagnostic imaging evidence demonstrating the clinical need.
MBS Item 45535: Bilateral Breast Fat Grafting
Covers the same clinical situations as 45534 but applies to fat grafting performed on both breasts in the same service. Up to four total services are allowed, again with documentation of clinical need.
Both items have identical eligibility criteria. The difference is simply whether one breast or both are being treated in a single procedure. For most post-mastectomy reconstruction cases, the unilateral item (45534) applies. For bilateral conditions like tuberous breast or significant developmental asymmetry, the bilateral item (45535) may be more appropriate, with the surgeon making that call based on the clinical situation.
When Medicare Will Not Cover Breast Fat Grafting
Medicare does not cover breast fat grafting performed for cosmetic or purely aesthetic reasons, regardless of the surgeon or the individual situation. This includes fat transfer for a breast size increase without an underlying medical condition, fat transfer to improve cleavage or upper-pole fullness for appearance reasons, or body contouring with fat transfer to non-breast areas.
If your reason for considering breast fat grafting doesn’t fit one of the specific medical conditions covered by items 45534 or 45535, you’ll be paying for the procedure entirely yourself. For more on cosmetic fat transfer (as an alternative to breast implants), see our comparison guide and recovery guide.
Breast Cancer Reconstruction: The Clearest Medicare-Covered Pathway
For patients who have had breast cancer treatment, fat grafting under MBS items 45534 and 45535 is one of the most clearly supported Medicare pathways. The eligible clinical situations are spelled out in the MBS descriptor and include several distinct scenarios.
Correcting defects after breast cancer treatment or prevention. If you’ve had a lumpectomy, partial mastectomy, or other breast-conserving surgery and have resulting contour defects, volume asymmetry of 20% or more, post-treatment pain, or poor prosthetic coverage, fat grafting to correct these changes is eligible under the MBS items.
Preparing post-mastectomy skin flaps for reconstruction. Patients who have thin or irradiated skin after mastectomy often need fat grafting to improve tissue thickness and quality before implant-based or autologous reconstruction can be safely performed. This is a well-established indication and is explicitly covered.
Breast reconstruction itself. Autologous fat grafting can be used as part of the breast reconstruction process, either as the primary reconstructive technique or in combination with implants or autologous tissue flaps. All are covered under the MBS items where medically indicated.
Up to four services are allowed per patient under these items. Documentation requirements remain the same: GP referral with clinical justification, photographic or diagnostic imaging evidence in your medical record, and volumetric measurement where volume asymmetry is the qualifying criterion.
What Counts as a “Developmental Disorder of the Breast”?
This is one of the more confusing areas of MBS eligibility, so worth spelling out clearly. A developmental disorder of the breast is a congenital condition (something you’re born with or that develops during puberty) rather than an acquired change. The MBS items cover specific recognised conditions.
Tuberous breast deformity (sometimes called constricted or tubular breast) is the most common qualifying condition. It involves a narrow breast base, enlarged areolas, minimal lower pole development, and often reduced overall volume. It can affect one or both breasts and varies considerably in severity. For more detail on this condition specifically, see our tuberous breast deformity guide.
Poland Syndrome is a rare congenital condition involving underdevelopment or absence of the chest wall muscles (pectoralis major in particular), often with underdevelopment or absence of the breast on the affected side. Fat grafting is a well-established treatment option for the volume and contour deficits caused by this condition.
Significant developmental asymmetry qualifies when there is a marked difference in breast size, shape, or position that has been present since breast development. The key quantitative threshold is a volume difference of 20% or more, demonstrated through appropriate volumetric measurement. Mild asymmetry (under 20%) generally doesn’t qualify, regardless of how much it bothers the patient aesthetically.
For any developmental disorder claim, the key requirement is that the procedure is documented as medically necessary for the specific patient, with photographs, measurements, and clinical findings supporting the qualifying diagnosis. A surgeon can’t label a cosmetic request as “developmental disorder” to bring it under Medicare. The clinical criteria are specific and auditable.
What You’ll Need for a Medicare Claim
The documentation requirements are strict, and missing documentation is the most common reason claims fail.
GP referral. You’ll need a current referral from your GP (or another specialist) valid at the time of surgery. GP referrals are typically valid for 12 months. For the referral to support a Medicare claim, your GP needs to document the clinical indication. This is worth discussing with your GP explicitly before they write the referral, particularly if your condition has multiple possible framings.
Clinical evidence in your medical record. Your surgeon needs to document the photographic or diagnostic imaging evidence demonstrating the clinical need. For developmental disorders of the breast, volumetric measurement showing the 20% asymmetry threshold is specifically required. For breast cancer cases, records of your oncological history, surgical history, and current clinical findings.
Two consultations. Under AHPRA cosmetic surgery reforms, you’ll have at least two consultations with a cooling-off period before surgery. For fat grafting that qualifies as reconstructive rather than cosmetic, the two-consultation requirement still typically applies, and the cooling-off period allows time for your surgeon to complete the required clinical documentation and for you to consider the decision.
MBS compliance audit awareness. Both items 45534 and 45535 are subject to random and targeted MBS compliance audits. Your surgeon’s record-keeping and clinical documentation needs to be robust. This is good for patients because it reinforces that eligibility is genuinely tied to clinical criteria rather than surgeon preference.
What the Medicare Rebate Actually Covers
Here’s what patients often misunderstand: a Medicare rebate is a partial subsidy, not full payment. Even when your fat grafting qualifies under an MBS item, you’ll still have significant out-of-pocket costs. The rebate typically covers only a fraction of the actual procedure cost. What’s left is called the gap payment.
What Medicare rebates apply to: the surgeon’s fee component (a scheduled fee that’s usually lower than the actual charge), the anaesthetist’s fee component, and in some cases part of the hospital accommodation cost.
What Medicare rebates do not fully cover: the gap on the surgeon fee, theatre fees, post-surgical garments, post-operative medications, any follow-up procedures that don’t separately qualify.
If you have private health insurance, some of the hospital component and some of the gap may be covered by your policy, but only if your condition meets the Medicare eligibility criteria. Private health funds won’t cover procedures that don’t have a valid MBS item applied, so Medicare eligibility is the starting point for any insurance cover.
Public Hospital Option for Breast Cancer Reconstruction
If your condition qualifies on clinical grounds but the out-of-pocket cost in a private setting is prohibitive, public hospital options exist, particularly for breast cancer reconstruction. Wait times in the public system are generally shorter for cancer reconstruction than for non-cancer reconstructive work, though they still vary by hospital and region. The choice of surgeon is usually not yours to make in the public system.
For patients with breast cancer history, this option is worth discussing with your breast care nurse or oncology team alongside your consideration of private-sector fat grafting.
Cost of Fat Grafting When It’s Not Medicare-Covered
For cosmetic breast fat grafting (the majority of breast fat transfer requests), you’re paying entirely out of pocket. Fat grafting costs vary considerably between surgeons and depend on the volume being harvested, the complexity of the case, the hospital and anaesthetist fees, and the number of sessions you need.
For cosmetic breast fat transfer, patients often need two and sometimes three sessions to reach their desired size target, and each session has its own cost. A consultation with a Specialist Plastic Surgeon is the only way to get accurate pricing for your specific situation. An accurate quote depends on your body type, the amount of fat available to harvest, the surgical plan, and the associated hospital and anaesthetist fees.
Using Super to Fund Fat Grafting Surgery
Some patients explore accessing their superannuation early to fund surgery that doesn’t qualify for Medicare. This is a separate process from Medicare eligibility and involves an application to the ATO through MyGov. Early super release for medical treatment is assessed individually, and there are tax implications on any withdrawn amount. Professional financial advice before submitting an application is sensible. Early super release isn’t automatic, and approval isn’t guaranteed.
Frequently Asked Questions
How do I know if my condition qualifies for Medicare-covered breast fat grafting? The simplest way is to book a consultation with a Specialist Plastic Surgeon who can assess your specific situation against the MBS criteria. The key qualifying scenarios are a documented breast cancer history with contour defects or post-treatment issues, thin or irradiated skin after mastectomy planning reconstruction, or a 20% or greater volume asymmetry from a confirmed developmental disorder like tuberous breast or Poland Syndrome. Your GP can help identify whether your situation may qualify before you see a surgeon, though final assessment and documentation happens during the surgical consultation.
Will private health insurance cover breast fat grafting if Medicare doesn’t? No. Private health funds follow Medicare eligibility for surgical rebates. If your procedure doesn’t have a valid MBS item applied, your health fund won’t cover it either. If your procedure does qualify under items 45534 or 45535, your health fund may cover some of the hospital costs and contribute to the gap payment (depending on your policy). Always contact your health fund directly with the specific MBS item number before booking surgery to confirm what’s covered.
How much fat survives long-term after breast fat grafting? Average long-term fat retention sits around 58%, with reported ranges from 44% to 83% based on current 2024 systematic review data. Individual retention depends on surgical technique, your factors (smoking history, body fat distribution, weight stability), and how closely you follow recovery protocols. For breast fat grafting specifically, some patients need a second session to reach their size target, which may or may not be covered depending on MBS criteria and the session count limits of four services.
Can I get fat grafting as part of breast reconstruction after breast cancer? Yes, this is one of the clearest Medicare-covered indications. MBS items 45534 and 45535 both explicitly cover fat grafting for correcting defects arising from breast cancer treatment, preparing post-mastectomy skin flaps for reconstruction, and breast reconstruction itself. You’ll still need GP referral, documentation of clinical need, and photographic evidence, but the pathway is well-established. Up to four services are allowed.
What if I want fat grafting for cosmetic breast augmentation rather than a medical reason? Medicare won’t cover it. Cosmetic fat transfer for breast augmentation doesn’t qualify under any MBS item. You’ll be paying for the procedure out of pocket, including all hospital, anaesthetist, and surgeon fees. Multiple sessions may be needed to reach your size target (typically 2 to 3 sessions), each with its own cost. For more detail on cosmetic fat transfer as an alternative to implants, see our guides on fat transfer vs implants and recovery after fat transfer.
Book a Consultation
If you think your situation may qualify for Medicare-covered breast fat grafting, or if you’re researching cosmetic fat grafting options and want an honest assessment, book a consultation with me at our Bondi Junction or Manly clinic in Sydney. I also consult at Brisbane, Canberra, and Newcastle.
Obtain a GP referral before your appointment (required for any Medicare claim). Bring any relevant medical history, previous imaging, photographs, and any oncological records if you have a breast cancer history. The consultation covers a clinical examination, an honest discussion of whether your situation meets MBS criteria, realistic cost expectations, and the two-consultation cooling-off process before any surgery decision is made.
Contact our clinic on 1300 437 758, or email [email protected].
General information only, not medical advice. MBS item numbers, criteria, and rebate amounts are subject to periodic review and change. The Department of Health reviews and updates MBS items regularly. Any decision about breast fat grafting surgery requires individual clinical assessment by a qualified health practitioner and a specific check of current Medicare eligibility at the time of surgery.
