CALIFORNIA -- I have a CPAP through Cigna which allows new durable goods annually because they get dirty (e.g. bacteria) and although you can clean them with bleach and vinegar, it is complex - some parts can't take bleach, etc. a.k.a. "durable goods peripherals replacement."
I was insured by Cigna as an employee but then became my husband's spouse (long story). CareCentrix which was contracted with Cigna (my old and new insurance) called me multiple times but never sent me a bill when they replaced parts of my durable medical device. They just sent it to American Medical Collection Agency.
TAMPA, FLORIDA -- My health insurance company contracts out medical durables/equipment to this company. They are terrible at billing and payments. Be sure to keep detailed records if you have to send them payments for medical equipment. I received the first bill four months after my daughter received her item. I could not pay the entire bill but did set up a payment plan of 3 installments. The first bill received was also the FINAL NOTICE - will be sent to collections.
My first payment was by check thankfully so I had the cancelled check available after CareCentrix did not credit it to my account. I did have to fax it in. After the second payment, I was told that my balance was zero. That was a surprise to me. Ten days after the final payment posted to my account, I checked their online system. Surprise - I still owe, no payment received. I called and the CS representative did manage to find my payment, so I've requested a zero balance letter just in case. I haven't dealt with a company so incompetent. Keep your records if you are billed by CareCentrix.