§ 405.511 Reasonable charges for medical services, supplies, and equipment.
(a) General rule. (1) A charge for any medical service, supply, or equipment (including equipment servicing) that in the judgment of CMS generally does not vary significantly in quality from one supplier to another (and that is identified by a notice published in the Federal Register) may not be considered reasonable if it exceeds:
(i) The customary charge of the supplier (see § 405.503);
(ii) The prevailing charge in the locality (see § 405.504);
(iii) The charge applicable for a comparable service and under comparable circumstances to the policyholders or subscribers of the carrier (see § 405.508);
(iv) The lowest charge level at which the item or service is widely and consistently available in the locality (see paragraph (c) of this section); or
(v) The inflation-indexed charge, as determined under § 405.509, in the case of medical services, supplies, and equipment that are reimbursed on a reasonable charge basis (excluding physicians' services).