Knee replacement cost in Adelaide — private, public and out-of-pocket explained

The cost of knee replacement is one of the most common questions patients ask, and one of the most important to understand before committing to surgery. The answer depends on which pathway you choose — private or public — and on your level of private health insurance. This article explains how the costs are structured so you can plan with confidence. Specific figures vary, so the rooms will always provide a written estimate before surgery.

The single most important step is informed financial consent — a written estimate of every fee before you decide to proceed.

The two pathways

Knee replacement in Australia can be done either through the public system or privately. The public system is funded by Medicare and is free to the patient, but waiting times can be long and you generally cannot choose your surgeon. The private system allows you to choose your surgeon and hospital and to have your surgery far sooner, but it involves a combination of fees offset partly by Medicare and your health fund.

What makes up the private cost

A private knee replacement involves several separate fees rather than a single bill. These typically include the surgeon's fee, the anaesthetist's fee, the surgical assistant's fee, and the hospital fee (theatre, accommodation, implant and nursing). Each is billed separately, and each is treated differently by Medicare and your health fund.

For patients with appropriate private health insurance, the health fund covers the hospital component and Medicare provides a rebate towards the medical fees. The difference between what is charged and what is rebated is the out-of-pocket cost, often called the “gap”.

The role of private health insurance

Knee replacement is classified under the joint replacement category of private health cover. It is important to confirm with your fund that your policy includes joint replacement and that there is no exclusion or waiting period that applies to you. Some lower-tier policies exclude joint replacement entirely, which can leave a patient with the full hospital cost. Checking this early avoids an unwelcome surprise.

Medicare rebates and the gap

Medicare sets a scheduled fee for each surgical item number and rebates a portion of it. Surgeons may charge above the scheduled fee, and the difference is the patient's out-of-pocket cost. Dr Mooney's rooms provide a clear written quote in advance so there are no hidden costs. Where appropriate, no-gap or known-gap arrangements with health funds can reduce or eliminate the out-of-pocket component for the hospital and some medical fees.

If you do not have private cover

Patients without private health insurance have two options: join a public waiting list (no cost, but a longer wait) or self-fund the surgery privately. Self-funding means paying the hospital, surgeon, anaesthetist and assistant fees directly, and this can be substantial. For many uninsured patients, the public system is the more realistic pathway.

Does robotic assistance change the cost?

Patients often ask whether robotic-assisted knee replacement costs more. In most private settings the answer is little or nothing extra for the patient — the robotic technology is part of the hospital's theatre infrastructure, and the surgical item numbers billed to Medicare are the same as for conventional knee replacement. Dr Mooney uses the Stryker MAKO system where it adds value, and his rooms will confirm in the written estimate whether any difference applies at your chosen hospital.

Costs to plan for after surgery

The hospital and surgical fees are not quite the whole picture. After a knee replacement, most patients attend outpatient physiotherapy for several months, and some choose a short stay in a rehabilitation facility rather than going straight home. Health funds vary widely in how they cover rehabilitation and physiotherapy, so it is worth asking your fund about both before surgery. Other small costs include post-operative medications, dressing supplies and travel to appointments — modest individually, but worth budgeting for.

Questions worth asking your health fund

Before committing to surgery, a short phone call to your health fund answers most of the financial questions. Useful questions include: Is joint replacement included in my level of cover, with no exclusions or restrictions? Have I served all waiting periods? Does my policy have an excess or co-payment, and how much? Is inpatient rehabilitation covered if I need it, and for how many days? Does my fund have a no-gap or known-gap agreement with my surgeon and anaesthetist? Having these answers in writing avoids surprises later.

The public pathway in South Australia

For patients using the public system, the journey starts with a GP referral to a public hospital orthopaedic outpatient clinic. After assessment, patients who need surgery are placed on a waiting list and given a clinical urgency category, which guides how quickly the operation is scheduled. Waiting times vary between hospitals and change over time — both for the initial clinic appointment and again for the surgery itself — and patients generally cannot choose their surgeon or hospital. For many people the public pathway is entirely appropriate; the trade-off is time and choice rather than quality. Patients wanting current waiting-time information should ask their GP or the hospital directly, as published figures change regularly.

Reading a written estimate

A good written estimate lists each item number, the fee charged, the expected Medicare rebate, the expected health fund contribution, and the resulting out-of-pocket amount — clearly separated for the surgeon, anaesthetist and assistant. If anything in the estimate is unclear, ask the rooms to explain it before booking a surgery date. No question about cost is too small, and clarity beforehand is far better than confusion afterwards.

How to get an accurate estimate

Dr Mooney’s surgical fees are based on the rates recommended by the Australian Medical Association, which publishes a recommended fee for each procedure as a professional benchmark. The only way to know your specific cost is to obtain a written estimate. After your consultation, the rooms will provide the surgical item numbers and an itemised quote for the surgeon's fee, and can advise on the likely anaesthetist and hospital costs. You can then take these to your health fund to confirm your level of cover. This process — informed financial consent — is a standard and important part of planning your surgery.

For a comparison with the equivalent hip procedure, see hip replacement cost in Adelaide.