a fingernail has a hardness of 2; a copper penny, about 3; a knife blade, 5; window glass, 5.5; and a steel file, 6.5. Here are the Mohs scale ratings for 144 types of gemstones:
Background: In the last Ambulance Open Door Forum (April 15, 2009), CMS received questions about how to correctly inform beneficiaries of potential liability for ambulance services that Medicare may not cover.he Medicare law defines the ambulance service benefit as an â ambulance service where the use of other methods of transportation is contraindicated by the individual's condition .â That is, the patientâs medical condition is such that transportation by ambulance is a clinical medical necessity.
Medicare Part A hospital care coverage. As a Medicare Part A beneficiary, you will receive coverage for hospital expenses that are critical to your inpatient care, such as a semi-private room, meals, nursing services, medications that are part of your inpatient treatment, and any other services and supplies from the hospital.