Just wanted to note since I read somewhere in the thread about sleep studies costing that KY at least, all the Medicaid MCOs pay in full for sleep studies as long as pre-authorization was given. Like in my case (I use Humana CareSource Medicaid) both my initial and titration studies were paid for in full by my MCO. As was the machine and tertiary equipment like mask and humidifier, hose. I did have to pay $25 for the modem though.
Of course, especially for someone who has a full time job, sleep studies are still very inconvenient, time consuming, and often uncomfortable. So of course if you can avoid getting another one that is ideal.
I was completely in the dark about APAP, data capable, etc before getting my machine unfortunately so I ended up with a fixed pressure machine. But at least it was data capable so I could've done worse. In my case though the sleep doctor and sleep study were in the same facility, the DME provider was entirely separate - and a staff member at the sleep study office gave me a list of DME providers to choose from before the titration study.
If your county has any 'St. Elizabeth' hospitals with a sleep disorder center I recommend switching to that. Most Medicaid MCOs give you the right to get a second opinion, and you can invoke that right to see another sleep specialist if your current one won't cooperate.
Of course, given what I've learned here if I am switched to another type of machine or when my 5 years are up and I can get a brand new machine I'll definitely ask for an APAP prescription in writing and then call DMEs to get a ResMed Autoset.
At least in my case with Humana CS, I was told I could swap anything out including mask within 30 days. But after that I was locked in at least in terms of the CPAP machine. The way Humana CS does it, and I assume other Medicaid MCOs in KY are similar, is the machine is rent-to-own. Insurance paid for mine monthly over a 6 month period after which I owned it.
Just some tips since the OP is on Medicaid in KY also: Regardless of which machine you get make sure to ask your DME provider for replacement supplies if you need them later on. Medicaid pays for those also. New entire mask kit every 6 months, I think water reservoir every 3 months, mask cushion every month (At least for me), fine filter (if applicable) every month, pollen filter every 3 months, new hose every 6 months, and new xPAP machine every 5 years. DME providers apparently aren't allowed to solicit you (even as a reminder) and offer replacement supplies, so you have to call them. I didn't know this at first so I figured I'd let you know.
I would assume that if you get a brick you can exchange it within 30 days for something else; but just in case you may want to refuse it and go with the suggestions posted here to get the written prescription and 'shop' around for local DME providers your MCO will pay for. That is what I should have done and regret not doing so. By the time I learned about the advantages of APAP I was beyond the 30 day point. But I at least did end up with a DreamStation Pro and not the worst one -- DreamStation (non-Pro) and the Pro does have a pseudo-APAP mode called A-Trial, but it might have a device lifetime limit of 5 months before irrevocably reverting to fixed pressure mode.
If your MCO (I think you mentioned WellCare is yours) has policies about only paying for bricks (I doubt they do, I think they have to abide by Medicare rules, even though Medicaid is a different entitlement) then you can switch to another MCO including Humana CareSource which I read is available in all KY counties. Humana CS will pay for any brand and model I believe. At least in my county there are 4-5 different MCOs and one MCO may be awesome in one county but lackluster in another so there isn't really one "best" MCO. It takes research to figure out which is a best fit for you.
If your MCO ends up being the issue, you can learn how to switch to another MCO
here but be aware that not all KY MCOs have the same networks. So if you really like your PCP / GP doctor or your dentist, etc then one or both may not be in network at the new MCO.