leaching. Phosphate leached from guano phosphatizes the underlying rocks in some areas, forming apatite where the host rock is limestone and forming aluminum- or aluminum-iron-phosphate minerals where the underlying rock is a silicate. Individual deposits of both igneous apatite and marine phosÂ­
Medicare Part B (Medical Insurance) covers diagnostic hearing and balance exams if your doctor or other health care provider orders these tests to see if you need medical treatment. Medicare doesn't cover routine hearing exams, hearing aids, or exams for fitting hearing aids.
All people with Medicare Part A (Hospital Insurance) and/or Medicare Part B (Medical Insurance) are covered. Part A covers hospital inpatients, and Part B covers hospital outpatients and patients in a doctor's office or freestanding clinic.ou pay a copayment as a hospital outpatient. You pay 20% of the Medicare-approved amount if you get your treatment in a doctor's office or freestanding clinic. The Part B deductible applies.