Will Medicare Cover the Whole Cost of Breast Reduction for a Woman with Size G Breasts?

Here in Australia, if you can obtain a referral to the plastic surgery department of a public hospital from your GP, and your surgery is for medical reasons, you could be placed on the public waiting list for surgery and your breast reduction would be done without any cost to you. Unfortunately in 2017, at least in Melbourne, it seems there are very few (if any) public hospital plastic surgery departments who will accept a breast reduction referral. Most hospitals will simply inform your GP that they don't offer breast reduction surgery full stop. 
If you decide to have surgery done privately, and if your surgery is for medical reasons, Medicare will cover a small amount of the overall cost of the procedure. If you have private health insurance, a much larger proportion of the cost (maybe half) would be covered by that insurance. 
You could obtain more accurate information that applies to you personally by speaking to the staff of your local plastic surgery practice, or having a consultation with an experienced surgeon. Remember to ensure they are qualified specialist plastic surgeons and members of the Australian Society of Plastic Surgeons.

You should consult with a board certified plastic surgeon who can submit the appropriate authorization and photos needed to get approved. There is no guarantee that your case will be accepted, as this depends on your individual case (your size and your symptoms). Medicare reimbursement is not very good for plastic surgeons so it may be difficult to find a surgeon in network.

Meet with a few plastic surgeons before you commit to surgery.

Best wishes,

Dr.Bruno

It would be hard to find a surgeon that would accept Medicare for a breast reduction surgery because Medicare's reimbursement is very low. You might try a teaching hospital that has a residency program in your state, sometimes they will do surgery at a reduced price or perhaps they might even accept Medicare. If you find a surgeon that will accept Medicare, usually  they will bill Medicare first after you have paid any deductible or co-payment that is due. Medicare usually only covers 80%. You might even contact Medicare and see if they might have a referral for you and let you know what costs if any you would be responsible for. The cost can vary greatly depending on your geographical area. As stated above the national average is about $7500.

Hello and thank you for the question!
I am not sure about the rules in US, I know that in Australia some public hospitals will accept new patients, if you fit the criteria. For that, you should see a Plastic Surgeon, fully qualified, who will be able to ascertain if you can go on the wait list for the public system.
Otherwise, Medicare can cover some of the expenses, if you have private health insurance.
Good luck and take care!

Medicare will cover breast reduction procedures if you meet their guidelines.  Medicare does NOT pre authorize like other health insurance companies.  You will need to go to a plastic surgeon who knows the guidelines to assure coverage.  Your photos would indicate that you would benefit from this procedure.