Isotopes are atoms of the same element (that is, with the same number of protons in their atomic nucleus), but having different numbers of neutrons. Most (66 of 94) naturally occurring elements have more than one stable isotope.Thus, for example, there are three main isotopes of carbon.or example, all carbon atoms contain 6 protons in their atomic nucleus; so the atomic number of carbon is 6. Carbon atoms may have different numbers of neutrons; atoms of the same element having different numbers of neutrons are known as isotopes of the element.
DME that Medicare covers includes, but isn't limited to: 1  Air-fluidized beds and other support surfaces (these supplies are only rented) 2  Blood sugar monitors. 3  Blood sugar (glucose) test strips.  Canes (however, white canes for the blind aren't 1  covered) Commode chairs.  Continuous passive motion (CPM) 1  machine. Crutches.  Hospital beds.
Parenteral and enteral nutrition, and related accessories and supplies, are covered under. the Medicare program as a prosthetic device. See the Medicare Benefit Policy Manual, Chapter 15, for a description of the policy. All Parenteral and Enteral (PEN) services.