Travel medical insurance covers for any new, unexpected sicknesses and injuries.
Most plans cover for chiropractic care if it has been recommended by a physician for a problem that started after the effective date of your travel medical insurance. However, since travel medical insurance does not usually cover for pre-existing conditions, it is unlikely that it would cover chiropractic care for an existing problem.
Insurance rates are regulated by law. You can't find the same insurance plan for a lower price anywhere else