Medical costs in Merida are mostly cheaper than Belize.Very much cheaper than the USA.Things like X-rays, cat scans and MRI's are roughly the same, but the radiologists have more expertise.
Hospital costs, much , much less than a private hospital in Belize City.La Loma Luz in San Ignacio may be cheaper.
I was in hospital for 5 days in Clinica Merida with a torn tendon in my shoulder.I had X-rays, an MRI, lab tests, and surgery to anchor down the tendon with screws.I would have been discharged in 24 hours but I had a reaction to medication and couldn't eat or drink for the remaining four, so I had to stay in.
Total cost for everything including medications and doctors fees etc, $6000USD.