Will Harvard Pilgrim cover having a breast reduction and removal of implants if ruptured?

It would have been helpful to say Harvard Pilgrim is an insurance company and not make me look it up to figure out what you were asking.

"Policy and Coverage Criteria: Harvard Pilgrim Health Care (HPHC) covers medically necessary breast surgeries including mastectomy, breast reconstruction, reduction mammoplasty, breast implant removal, and inverted nipple repair."

The important two words in that quote are "medically necessary" if they consider it necessary then it's covered.

You don't get this kind of information from a question answer site. You get the most accurate information by
calling customer service or their equivalent and asking them what they cover and how is it determined if something is medically necessary.