If you did not have health insurance from healthcare.gov and do not have a 1095A, then when the software asks if you have a 1095A you say NO to that, and move on. You do not enter a 1095B or a 1095C, or anything about having Medicare or Medicaid.
If you did, in fact, have marketplace health insurance then you must enter your 1095A. To get the 1095A:
To enter your 1095A go to Federal>Deductions and Credits> Medical>Affordable Care Act (Form 1095A)
ENTER 1095A TT FAQ
https://ttlc.intuit.com/turbotax-support/en-us/help-article/insurance-medical-benefits/enter-1095/L6CLFzhri_US_en_US?uid=m62itugr
TO FIND A 1095-A with healthcare.gov
How to find your 1095-A online
- Log in to your account.
- Under "Your Existing Applications," select your 2024 application — not your 2025 application.
- Select “Tax Forms."
- Download all 1095-As.
Get screen-by-screen directions, with pictures (PDF, 504 KB).