that the out-of-state, reference lab is approved by the state agency and comply with state require - ments for specimen collection, identification, examination, quality control, and test reporting. Of course, there are usually exemptions to such rules; for example, Pennsylvania state law does
PRN (Pro re nata) is a Latin term which means âin the circumstancesâ. When used in the medical field, PRN means âas the situation arisesâ or âas neededâ. PRN is typically used by doctors when writing a prescription. SHARE.
Section 1395m(j)(2)(1998); 42 C.F.R. A Certificate of Medical Necessity (CMN) or a DME Information Form (DIF) is a form required to help document the medical necessity and other coverage criteria for selected durable medical equipment, prosthetics, orthotics, and supplies (DMEPOS) items.