Key Takeaways
- MBS item 45523 covers bilateral reduction mammaplasty with surgical repositioning of the nipple. Two criteria have to be met: macromastia, and pain in the neck or shoulder region.
- The item is not payable where any breast prosthesis is inserted, so a reduction combined with implants does not qualify.
- The schedule fee is $1,616.70 and the Medicare benefit is 75% of that, being $1,212.55. For an insured patient the fund covers the remaining 25%.
- The rebate is not where most of the value sits. An eligible item number is what activates private health fund cover for the hospital and anaesthetic components.
- Documentation decides most cases: GP records of symptoms over time, specialist examination findings, clinical photographs and often volume measurement.
- Eligibility is a clinical assessment made at consultation. It cannot be judged from photographs sent in advance, and it does not turn on patient preference.
Breast reduction is one of the few breast procedures that may attract a Medicare rebate in Australia, and only where specific clinical criteria are met. Macromastia, documented pain in the neck or shoulder region, and a defined body of evidence all have to be in place before item 45523 applies.
For patients who do qualify, the financial effect is substantial, though not for the reason most people expect. The rebate itself is a partial amount. Qualifying for the item number is what unlocks private health fund cover of the hospital and anaesthetic fees, and that is where most of the saving sits.
What follows sets out the criteria, the documentation required, how private health cover interacts with the item number, and the realistic timeline from first GP visit to surgery. Full detail on the operation itself sits on the breast reduction page, and the breast reduction cost guide sets out the figures with and without Medicare.
What item 45523 covers
Item 45523 is the Medicare Benefits Schedule code for bilateral reduction mammaplasty with surgical repositioning of the nipple. The descriptor specifies two conditions and one exclusion.
The two conditions are macromastia, and pain in the neck or shoulder region. The exclusion is the insertion of any prosthesis. A reduction performed at the same time as breast implants cannot be claimed under this item.
The schedule fee is $1,616.70, and the Medicare benefit is 75% of that, being $1,212.55. Private fees are set independently of the schedule and are generally higher, so Medicare covers the schedule-fee portion and the balance is a gap. Schedule fees are indexed periodically, so it is worth checking the current figure on MBS Online rather than relying on a number quoted in an article.
The direct rebate is modest relative to the cost of private surgery. What makes the item financially significant is what it unlocks.
Why the item number matters more than the rebate
Private health funds contribute to a procedure only where it carries a valid MBS item number and the patient meets the eligibility criteria for it. Cosmetic surgery has no item number, which is why funds pay nothing toward it.
Where your reduction qualifies under item 45523 and you hold appropriate hospital cover with waiting periods served, the fund covers the hospital accommodation and the anaesthetic component. In private surgery these are a substantial share of the total, so the practical effect is usually larger than the Medicare rebate itself. A medically indicated procedure meeting MBS criteria is also GST-exempt.
Gap payments on the surgeon’s and anaesthetist’s fees still apply. Eligibility changes the cost from a fully self-funded figure to an excess plus a gap. It does not make the procedure free.
Funds differ on which policy tiers include this item, and some cover it only at higher tiers. Confirming directly with your fund, quoting the item number and your level of cover, is worth doing before surgery is booked.
The clinical criteria
Eligibility is not a matter of surgical discretion. The criteria sit in the item descriptor, and eligibility is established through clinical evidence documented by your GP, your surgeon and any supporting investigations.
Macromastia. The clinical term for significantly enlarged breasts. There is no single cup-size threshold, because breast size is relative to body frame, chest wall width and overall proportion. Assessment takes in breast weight and volume, chest wall measurements, and proportion. Some assessments include volumetric measurement or weight-based estimation of breast tissue.
Neck or shoulder pain. Pain documented as related to the weight of the breasts. Associated findings are common, including upper back pain, bra-strap grooving, postural change, skin irritation in the inframammary fold and, in some patients, numbness or tingling in the hands. Those findings support the picture, but the item turns on neck or shoulder pain specifically. A documented history over time, ideally including conservative measures that have not resolved the symptoms, carries considerably more weight than an account first given at the surgical consultation.
Both criteria need to be met, not one.
What documentation is required
Medicare billing is subject to audit, and item 45523 is not billed unless the record supports it. The evidence usually comprises:
- GP referral, documenting symptoms, their duration, and the history of conservative management
- Specialist examination, covering breast size, chest wall measurements, posture and pain distribution
- Clinical photographs, standardised views taken at consultation
- Volume assessment, by measurement or imaging, in many cases
- Symptom history over time, showing the pain is longstanding rather than recent
- Evidence that conservative measures have been tried, such as physiotherapy, professional bra fitting or weight management where appropriate, without resolving the symptoms
The pathway from GP to surgery
Step one. GP consultation to discuss symptoms, with the pain, its duration and any conservative management documented. A GP referral is required before a first surgical consultation regardless of whether Medicare is being pursued.
Step two. First surgical consultation. Assessment of breast size, chest wall measurements, pain distribution and the overall clinical picture, with clinical photographs taken and surgical options discussed, including whether the presentation is likely to meet the criteria.
Step three. Between consultations. Any further documentation or investigation, and verification with your health fund that item 45523 is covered at your policy level.
Step four. Second consultation. At least two consultations are required before surgery is booked. Documentation is reviewed, eligibility is confirmed or the gaps identified, and the surgical plan is finalised. Psychological assessment is part of the current framework.
Step five. Cooling-off period between consent and surgery.
Step six. Surgery at an accredited private hospital.
Where eligibility is being pursued, the pathway from first GP visit to surgery commonly runs to several months. It is worth planning on that basis rather than expecting a rapid route to theatre.
What Medicare does not cover
- A reduction combined with implants. The prosthesis exclusion in the item descriptor rules this out.
- Purely cosmetic reduction. Without documented macromastia and neck or shoulder pain, there is no item number and no rebate.
- Revision of a cosmetic reduction. Where the original operation was cosmetic, revision is usually treated the same way.
- The full cost of surgery. Even where the item applies, the benefit is 75% of the schedule fee. Gaps remain on the surgeon’s and anaesthetist’s fees.
Eligibility criteria and schedule fees are reviewed periodically. The position set out here reflects the MBS as it stands, and the item’s current descriptor is the authoritative source.
Related item numbers
Item 45523 is the common one, but it is not the only reduction item.
Item 45520 covers unilateral reduction mammaplasty with surgical repositioning of the nipple, in the context of breast cancer or a developmental abnormality of the breast.
Item 45522 covers unilateral reduction mammaplasty without surgical repositioning of the nipple. It excludes the treatment of gynaecomastia and, like 45523, is not payable with the insertion of any prosthesis.
Which item applies is determined at consultation from the clinical presentation and the documentation.
The consultation framework
The cosmetic surgery guidelines that came into force on 1 July 2023 apply to breast reduction even where the procedure is performed under item 45523. They are separate from, and additional to, Medicare eligibility.
A referral from a GP or specialist is required. A minimum of two consultations with the operating surgeon applies before surgery is booked. Psychological assessment is conducted to confirm suitability. A cooling-off period sits between consent and surgery. These apply whether the procedure is Medicare-rebated or self-funded.
Frequently asked questions
Does Medicare cover breast reduction surgery in Australia?
It can, through item 45523, and only where the criteria are met. Those are macromastia and pain in the neck or shoulder region, both documented. The item is not payable where breast implants are inserted during the same procedure. The direct benefit is $1,212.55, being 75% of the $1,616.70 schedule fee, but qualifying for the item is what enables private health fund cover of the hospital and anaesthetic components, which is where most of the saving comes from. Eligibility follows the clinical evidence, not patient preference.
How much is the Medicare rebate for breast reduction?
The benefit for item 45523 is $1,212.55, which is 75% of the schedule fee of $1,616.70. Private fees are set independently of the schedule and are generally higher, so the balance is a gap. For an insured patient the fund covers the remaining 25% of the schedule fee. Schedule fees are indexed periodically, so check the current figure on MBS Online if you are budgeting closely.
What clinical criteria do I need to meet for item 45523?
Two. Macromastia, meaning clinically enlarged breasts assessed on breast weight and volume, chest wall measurements and overall proportion rather than cup size alone. And pain in the neck or shoulder region related to breast weight. Both must be met and supported by evidence: GP documentation of symptoms over time, specialist examination, clinical photographs and, in many cases, volume assessment. A history of conservative measures that have not resolved the symptoms is usually expected.
Does private health insurance cover breast reduction?
Funds may cover the hospital and anaesthetic components, but only where the procedure carries a valid MBS item number and the eligibility criteria are met. Cover for item 45523 is often limited to higher policy tiers. Verify with your own fund before booking, quoting the item number and your level of cover. A cosmetic reduction with no item number attracts no fund contribution toward hospital or anaesthetic costs.
How long does the Medicare breast reduction process take?
Commonly several months from first GP visit to surgery. That covers GP consultation and documentation of symptoms over time, the first surgical consultation, any further conservative management or investigations, the minimum two consultations required before booking, psychological assessment, the cooling-off period, health fund verification, and scheduling at an appropriate hospital. Planning on that basis is more realistic than expecting a rapid pathway.
