Ancillary care can be described as the associated services that facilitate the work of primary medical care providers such as doctors, nurses, and dentists.
There are three main categories of ancillary care service: diagnostic, therapeutic, and custodial.
Diagnostic ancillary care includes laboratory and genetic testing, x-rays, and diagnostic imaging like a CAT scan.
Therapeutic ancillary care includes rehabilitation, physical therapy, occupational therapy, speech therapy, massage, and chiropractic care.
Custodial ancillary care includes long-term care facilities, hospice, and nursing facilities. So if you go to the doctor with a broken bone they will most likely use a diagnostic ancillary care professional to give you an x-ray and possibly a therapeutic ancillary care physical therapist to help your bone heal properly and restore range of motion.