I fly regularly with my CPAP.

The advice to treat it like a laptop is good advice.

Only take the main unit out of your carry-on. Leave hoses and mask in your carry-on.

I leave my CPAP in a nylon bag while it goes through the xray machine. TSA always takes it out of the bag while swabbing and usually will carefully place it back in the bag when done with that check.

Don't check your CPAP. I've heard but can't verify that there is a good chance it won't be waiting for you in baggage claim.