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.
What's Covered. Medicare Part A covers chemotherapy provided to an inpatient at a hospital or skilled nursing facility. Medicare Part B covers chemotherapy for an outpatient in any setting.If you have a Medicare Part C Medicare Advantage plan: Medicare Part C Medicare Advantage plans, also called Medicare Advantage plans, must cover everything that's included in original Medicare Part A and Part B coverage.But sometimes a Part C plan covers more, with extra services or an expanded amount of coverage.or an outpatient, the amount of coverage Medicare Part B provides for chemotherapy depends on the setting in which the treatment is provided.