Kind of depends on the severity though:

Association of obstructive sleep apnoea with the risk of vascular outcomes and all-cause mortality: a meta-analysis | BMJ Open

Milder forms of OSA simply do not warrant active treatment. Nor do the statistics indicate progression to more severe forms in the absence of treatment.

Quick question about whether I should report Sleep Apnea on my medical questionnaire or even bring it up. I was tested for sleep apnea last year and the results were inconclusive, but leaning toward "it doesn't look like you have sleep apnea". However, my doctor wanted me to get another study done to verify for some reason.

I am looking at getting my 1st class medical soon after a long hiatus, and just want to make sure I cross my I's and dot my T's before I go in. I just had a physical and everything checked out, but I still have the Sleep Apnea thing on my record, even though it was inconclusive.

So what would be the best course of action here?

I don't think you have a choice. You have to report the consultation with a health-care provider regardless. That will lead to a discussion of the findings, and you don't want to lie...

Since the doc left you in limbo, I would recommend doing the follow-ups and get a definitive answer BEFORE you get a medical. I can just about guarantee you that "doesn't think you have it, but wants more tests" = denied medical. FAA is pretty hard-over on OSA right now, that and mental health are the hot-buttons du jour.

You might consult with AOPA, AMAS, etc.

If you do have OSA, you can probably fly with treatment (but that might be an SI).

Thanks. Yeah, I need to talk to the doc and get some closure. He ordered another sleep study (in lab this time) but insurance won't cover it and it is like $6K which I am not paying.

I think I might just need to get a second opinion from another doc really, and try to get a confirmation that I don't have OSA. Annoying because I brought it up a few years ago because my wife complained about snoring and then he ordered the study.

I'm really not even at risk. 26 BMI and pretty healthy overall. No problems sleeping or breathing other than snoring sometimes but that's not every night.

I went through a similar problem with my SI not long ago. I had a stroke in 2016 and the neurologist ordered a sleep study. The study came back just above the FAA limit at 18.7 but the doctor never prescribed any CPAP therapy. When I sent in my SI application the FAA said I had to have therapy because I was above the 15 AHI limit. Since it had been a year and a half since the first study, I did a in home study with RPM (rpmhst.com) due to the cost of a in lab study and it came back positive too. I paid $150 for the home study and around $600 for the Airsense10. They do not take insurance, but will do $300-$325 depending on the machine and $50 a month for six months. Be sure to sign up for their email specials, that saved me another $100 on my machine. It also comes with a free mask of your choice (I like the dreamwear because the hose is on top of your head not your face and causes less disturbance at night if you toss and turn in your sleep) plus lifetime monitoring, just be sure to tell them it for the FAA, they had to change a few perimeters on mine from their normal CDL setup. Good luck, as long as you do what the FAA requires for usage, you should have no problem.