Bariatric surgery does the first half of the job. It takes the weight off — often 30, 50 or 70 kilograms — and with it much of the diabetes, sleep apnoea, joint pain and cardiovascular risk that came with it. What it cannot do is take away the skin that was stretched to hold that weight. For many patients that skin becomes the thing that still stops them exercising, still causes rashes, still means clothes do not fit, and still makes the change feel unfinished. This page is about the second half: when it is safe to remove it, what has to be in order first, which operations are involved and what Medicare will and will not do.
In short: Skin removal after bariatric surgery is usually considered from around 12 to 18 months post-operatively, once your weight has plateaued and been stable for at least six months. Before operating, Dr Kumar wants your nutrition checked and corrected — protein, iron, B12, folate, vitamin D and zinc deficiencies are common after a sleeve or bypass and they directly impair wound healing. Complication rates in post-bariatric body contouring are higher than in patients who have not lost weight this way, which is why preparation matters as much as technique. Medicare items 30166, 30169, 30177 and 30179 may apply where documented functional criteria are met.
- When can I have it?
- Nutrition and bloods
- Which operations
- How risky is it?
- Weight regain
- Cost and Medicare
- Questions
How long after bariatric surgery can I have skin removal?
The usual answer is 12 to 18 months after your bariatric operation, but the calendar is not really the criterion. Three things are.
Your weight has plateaued. Most of the weight loss after a sleeve gastrectomy or gastric bypass happens in the first 12 to 18 months, then flattens. Operating while the curve is still falling means removing skin that will be replaced by more loose skin as further weight comes off — a second operation to fix the result of the first.
It has been stable for at least six months. This is both a clinical requirement and a Medicare one. Stable means recorded, not remembered — bring your weight record from your bariatric team.
Your nutrition is corrected. This is the one patients least expect and the one most likely to delay surgery. It is covered in detail below.
Coming too early is the most common mistake. There is also such a thing as leaving it too long: skin that has hung for years develops chronic changes in the fold — thickened, pigmented, sometimes chronically infected tissue — and persistent intertrigo is unpleasant to live with. There is no penalty for being seen early. A consultation at nine months, before you are ready to operate, is often the most useful appointment you will have, because it tells you what to organise, what the plan will look like, and what documentation to start with your GP.
Had a sleeve or bypass and wondering if it is time?
Dr Kumar will look at your weight curve, your bloods and your skin, and tell you whether you are ready, what needs to happen first, and what the sequence would look like. If it is too early, he will say so and tell you when to come back. A GP referral is required.
Nutrition, bloods and why they decide your date
This is the part of post-bariatric body contouring that separates a straightforward recovery from a difficult one, and it gets far less attention than it deserves.
A sleeve gastrectomy restricts intake. A gastric bypass restricts intake and bypasses part of the small intestine where iron, calcium and B vitamins are absorbed. Either way, deficiencies are common — and they are common in patients who feel completely well, which is why they have to be measured rather than assumed.
The ones that matter most for surgery:
- Protein. Wound healing is a synthetic process. Collagen cannot be laid down without adequate protein intake, and many post-bariatric patients are running below what they need without realising it. Low albumin is associated with wound complications.
- Iron and haemoglobin. Anaemia is common after bypass in particular. It affects oxygen delivery to healing tissue, and it matters more when an operation may involve significant blood loss.
- Vitamin B12 and folate. Absorption is impaired after bypass; deficiency affects cell division and therefore healing.
- Vitamin D and calcium. Frequently low. Relevant to bone health as well as healing, and bone density loss after bariatric surgery is under-recognised.
- Zinc and vitamin C. Both directly involved in wound healing and both commonly low after restrictive procedures.
- Thiamine. Relevant to anaesthetic safety in patients with poor intake or ongoing vomiting.
What this means in practice: Dr Kumar will ask for recent bloods, and where they are abnormal he will ask you to correct them with your bariatric team or dietitian before a surgery date is set. That may delay you by a few months. It is a better outcome than a wound that will not close.
The same applies if you are still vomiting, still unable to meet your protein target, or still on a restricted intake. Those are reasons to fix something first, not reasons you can never have surgery.
Which operations, and in what order
There is no single “skin removal” operation. The area and the amount of skin determine the procedure, and most patients after bariatric surgery need two to four operations, staged over 12 to 24 months.
The abdomen is almost always first. It carries the greatest volume of skin, it causes the most functional trouble, and it is where a Medicare item is most likely to apply. Which abdominal operation depends on what you have:
- A panniculectomy removes the overhanging apron without tightening the abdominal muscles or reshaping the waist. It is the right operation where the aim is to get rid of the weight of the apron and the rashes that come with it.
- An abdominoplasty removes skin, repairs separated abdominal muscles where present and repositions the umbilicus.
- A fleur-de-lis abdominoplasty adds a vertical scar to take up width as well as length. Common after very large weight loss, where a horizontal excision alone leaves the abdomen wide.
- A circumferential body lift (belt lipectomy) continues the excision around the back, addressing the flanks, the lower back and the buttocks at the same time.
Chest and breasts usually come next. For women, a breast reduction or a breast lift with fat grafting, since after major weight loss the breast typically loses volume as well as position. For men, male chest contouring, which is a different operation from gynaecomastia surgery, uses different Medicare items, and is routinely confused with it.
Arms and thighs are usually last. An arm lift leaves a scar along the inner arm that is visible in short sleeves; a thigh lift has the highest rate of wound healing problems of any of these operations because of where the scar sits. Both are worth doing for the right patient, and both are better approached once you have been through a stage and know what recovery actually involves.
The mons pubis is frequently affected and rarely raised by patients. It is worth mentioning at consultation if it bothers you; it is often addressed at the same time as the abdomen.
Two moderate procedures are sometimes combined. Four are not. Operating time is itself a risk factor, and the risk does not rise in a straight line.
How risky is skin removal surgery after weight loss?
More than most elective plastic surgery, and it is better to know that now than to find it out afterwards.
These are long operations on large surface areas, closing long wounds under some tension, in patients whose tissue quality and nutritional reserve have both been affected by major weight loss. Published series of post-bariatric body contouring consistently report higher complication rates than the equivalent operations in patients who have not lost large amounts of weight — most of it wound-related rather than life-threatening.
The common problems:
- Seroma — fluid collecting under the skin flap. The most frequent complication in this group. Drains are used to reduce it, and collections that form after drain removal may need aspiration in the rooms.
- Wound breakdown (dehiscence), most often at the junction of incisions and at points of greatest tension. It usually heals with dressings over weeks rather than needing a return to theatre, but it is inconvenient and it affects the scar.
- Infection, and delayed healing.
- Bleeding and haematoma.
- Skin or fat necrosis where blood supply to the edge of a flap is marginal. Far more common in smokers.
- Altered or absent sensation in the skin around the scar, often for many months and sometimes permanently.
- Scarring — long, permanent, and sometimes thickened or pigmented.
- Asymmetry and contour irregularity, and the possibility of revision surgery.
The serious ones: venous thromboembolism (deep vein thrombosis and pulmonary embolism), which is why you are mobilised early, given compression and, for longer procedures, chemical prophylaxis; anaesthetic complications; and significant blood loss in very large procedures.
What actually reduces your risk, in order of how much difference it makes: stopping nicotine completely and well before surgery; correcting nutritional deficiencies; having a stable weight; staging rather than combining procedures; treating any active skin infection before the operation; and managing diabetes, sleep apnoea and blood pressure properly beforehand. Most of that list is in your hands rather than the surgeon’s, which is the honest and slightly uncomfortable truth about this surgery.
What if my weight goes back up?
Some regain after bariatric surgery is normal, and a degree of it is expected in the years following the initial loss. A modest fluctuation will not undo a well-planned result.
Significant regain will. Skin that has been tightened and closed does not have a reserve to stretch into; weight gained after body contouring can put a closure under tension, distort the result and, in some patients, lead to further surgery. It is one of the reasons Dr Kumar asks for six months of documented stability before operating rather than taking your word for the plateau.
If your weight is still moving in either direction, or if you are in the middle of changing your bariatric management, the sensible course is to wait. Nobody is served by operating on a moving target, and you will not be charged for the advice to hold off.
Cost and Medicare after bariatric surgery
Surgery performed solely to change appearance is not covered, regardless of how much weight you have lost or how you lost it. Where documented functional criteria are met, these items may apply:
- 30177 — abdominal lipectomy with radical abdominoplasty.
- 30179 — circumferential lipectomy (belt lipectomy or body lift).
- 30166 — abdominal skin removed as a wedge excision for functional problems.
- 30169 — non-abdominal skin, one or two areas such as arms or thighs.
For items 30177 and 30179, all three of the following must be documented: the redundant skin is complicated by intertrigo or another skin condition risking loss of skin integrity that has failed three months of conventional non-surgical treatment; the redundant skin interferes with your activities of daily living; and your weight has been stable for at least six months following significant weight loss. Items 30166 and 30169 require a loss of at least five BMI units with six months of stability, but not the intertrigo test.
If you have had bariatric surgery, you have almost certainly lost more than five BMI units. What people are more often missing is the documented three months of treatment for the skin condition. Start that record with your GP now: dated photographs, each episode of rash or infection and what was prescribed for it, and a note of what the skin stops you doing.
The rebate is not the main financial event. An applicable Medicare item is what allows your private health fund to contribute to the hospital admission, which is usually the largest single component of the cost. No item number means the fund contributes nothing to hospital. Check your level of cover and waiting periods directly with your fund — and note that many patients who took out cover for their bariatric surgery already have appropriate hospital cover in place.
The initial consultation with Dr Kumar is $400, with a Medicare rebate of approximately $88 where you have a GP referral. You will receive a written, itemised quote after your consultation, with each stage quoted separately.
Common questions
How much does it cost to remove skin after weight loss surgery?
It depends on how many areas need treating, how long each operation takes, whether you stay one night or three, and whether a Medicare item applies — which in turn determines whether your health fund contributes to the hospital cost. Because most patients need two to four staged operations, the useful question at consultation is usually not “what does this cost” but “in what order, and over what period, can I fund this”. You leave your consultation with a written itemised quote for each stage.
Should my bariatric surgeon refer me, or my GP?
A GP referral is what Medicare requires for the consultation rebate, so that is the one to organise. That said, correspondence from your bariatric surgeon or dietitian is genuinely useful — it gives Dr Kumar your weight curve, your operation type, your recent bloods and any ongoing issues in one place. Bring whatever you have.
Can I have more than one area done at the same time?
Sometimes. Two moderate procedures in compatible positions can often be combined — an abdominoplasty with a monsplasty, for instance. Combining several large excisions is a different proposition: operating time is itself a risk factor for blood clots, blood loss, hypothermia and wound complications, and that risk accelerates rather than adding up. Dr Kumar will tell you what he is prepared to combine in your case and why, and will not stack procedures to save you a second anaesthetic if he thinks it is unsafe.
Will I need a blood transfusion?
Uncommon for a single-area operation, but a real possibility in large procedures such as a circumferential body lift, particularly if you start anaemic. This is one of the reasons your haemoglobin and iron studies are checked and corrected beforehand. It is discussed as part of consent before any large procedure.
Is it different after a sleeve versus a bypass?
The surgery is the same; the preparation differs. A gastric bypass bypasses part of the small intestine where iron, calcium and B vitamins are absorbed, so deficiencies are generally more pronounced and more persistent than after a sleeve gastrectomy, which is restrictive rather than malabsorptive. In practice that means bypass patients more often need their bloods corrected before a date is set. Lifelong supplementation and monitoring apply to both.
How much time off work should I plan for?
For an abdominoplasty or panniculectomy, most patients doing desk-based work return at around two to three weeks, with no heavy lifting or strenuous activity for about six weeks. A circumferential body lift is longer — often four to six weeks before returning to office work. Physical or lifting work generally means six weeks or more. Because surgery is staged, it is worth planning your leave across the whole sequence rather than one operation at a time.
I had my bariatric surgery overseas. Does that matter?
Not to your eligibility. What matters is having the information: what operation you had, when, your weight before and since, and recent bloods. If you do not have records, your GP can arrange current bloods and Dr Kumar will work from your weight history and examination. Ongoing bariatric follow-up with an Australian team is worth arranging in any case, for reasons that have nothing to do with plastic surgery.
Does excess skin ever qualify for treatment in the public system?
In a limited way. A small number of public hospitals perform post-weight-loss skin removal, usually only for patients with significant documented functional problems, usually after an internal approval process, and with long waiting lists. It is not available at most public hospitals, and the great majority of this surgery in Australia is done privately. If you are considering the public pathway, your GP or bariatric team is best placed to tell you what exists in your area.
Talk it through with Dr Kumar
Consultations at Westmead, Penrith and Orange, with surgery at Westmead Private Hospital. Patients travelling from the Central West are seen in Orange.
This page is intended as general information and is not a substitute for individual medical advice. All surgery carries risk, and individual results will vary. Surgical photographs on this website are intended for viewers aged 18 and over. Read more about the risks of surgery here.
Dr Rohit Kumar (MED0001630444) Registered medical practitioner, specialist plastic surgeon (specialist registration in surgery – plastic surgery).
