Australians only

Do I need parental consent to get an contraceptive implant (the arm implant)? I am currently 16 and I want to get the arm thingy but like I don't really want to tell my mum about it, also how much would it cost if it's not covered my Medicare, since I can't tell my mum I won't be able to claim it and stuff.  Thanks any sort of help would be appreciated 😊