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 Advantage Managed Care Plans: Beneficiary Protections. 1  The plan cannot charge more than a $50 copayment for visits to the emergency room. 2  You or your doctor can appeal a denial of service and the appeal must be handled in a timely way. The plan must make an initial determination within 14 days.