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.
Is this service a Medicare-covered ambulance benefit? AND; Will payment for part or all of this service be denied because it is not reasoable and necessary? AND; Is the patient stabel and the patient non-emergent? In non-emergency situations it is a good idea to ask whether the transportation will be covered before taking the trip.