Yes, that’s what I thought, but then @andrea8 's experience with Medicare and getting twiist covered under Part B turned up… Here’s Andrea’s original post:
Then here is the clarification; I’d made all sorts of assumptions about the original post but the worst was that Andrea was on Part C… This corrected my misassumptions:
So Andrea is using twiist on Part B and has a Medigap (“supplemental”) which ends up covering it. Medigap if correctly chosen covers all Part B expenses after the deductible ($283 this year, 2026). Here’s my summary (after I’d worked out my mistakes):
This, finally, is all reasonable. twiist, despite the Tech Bro denial, is clearly a durable pump, so clearly a Part B item. This is ~great~super.