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.
However, paramedics and ambulance services are not mentioned in the Canada Health Act and are therefore not an insured service. Provinces may choose to subsidize some of the cost, usually just for patients with a valid provincial health card. Health insurance in Canada is universal and publicly funded, therefore the cost of emergency ambulance services is covered to some degree.