42 CFR § 412.2 - Basis of payment.
(a) Payment on a per discharge basis. Under both the inpatient operating and inpatient capital-related prospective payment systems, hospitals are paid a predetermined amount per discharge for inpatient hospital services furnished to Medicare beneficiaries. The prospective payment rate for each discharge (as defined in § 412.4) is determined according to the methodology described in subpart D, E, or G of this part, as appropriate, for operating costs, and according to the methodology described in subpart M of this part for capital-related costs. An additional payment is made for both inpatient operating and inpatient capital-related costs, in accordance with subpart F of this part, for cases that are extraordinarily costly to treat.
(b) Payment in full.
(1) The prospective payment amount paid for inpatient hospital services is the total Medicare payment for the inpatient operating costs (as described in paragraph (c) of this section) and the inpatient capital-related costs (as described in paragraph (d) of this section) incurred in furnishing services covered by the Medicare program.
(2) The full prospective payment amount, as determined under subpart D, E, or G and under subpart M of this part, is made for each stay during which there is at least one Medicare payable day of care. Payable days of care, for purposes of this paragraph include the following:
(ii) Guarantee of payment days, as authorized under § 409.68 of this chapter, for inpatient hospital services furnished to an individual whom the hospital has reason to believe is entitled to Medicare benefits at the time of admission.
(3) If a patient is admitted to an acute care hospital and then the acute care hospital meets the criteria at § 412.23(e) to be paid as a LTCH, during the course of the patient's hospitalization, Medicare considers all the days of the patient stay in the facility (days prior to and after the designation of LTCH status) to be a single episode of LTCH care. Medicare will not make payment under subpart H for any part of the hospitalization. Payment for the entire patient stay (days prior to and after the designation of LTCH status) will be made in accordance with the requirements specified in § 412.521. The requirements of this paragraph (b)(3) apply only to a patient stay in which a patient is in an acute care hospital and that hospital is designated as a LTCH on or after October 1, 2004.
(4) Malpractice insurance costs related to services furnished to inpatients; and
(5) Preadmission services otherwise payable under Medicare Part B furnished to a beneficiary on the date of the beneficiary's admission to the hospital and during the 3 calendar days immediately preceding the date of the beneficiary's admission to the hospital that meet the condition specified in paragraph (c)(5)(i) of this section and at least one of the conditions specified in paragraphs (c)(5)(ii) through (c)(5)(iv).
(i) The services are furnished by the hospital or by an entity wholly owned or operated by the hospital. An entity is wholly owned by the hospital if the hospital is the sole owner of the entity. An entity is wholly operated by a hospital if the hospital has exclusive responsibility for conducting and overseeing the entity's routine operations, regardless of whether the hospital also has policymaking authority over the entity.
(ii) For services furnished after January 1, 1991, the services are diagnostic (including clinical diagnostic laboratory tests).
(iii) For services furnished on or after October 1, 1991, through June 24, 2010, the services are furnished in connection with the principal diagnosis that requires the beneficiary to be admitted as an inpatient and are not the following:
(A) Ambulance services.
(B) Maintenance renal dialysis.
(iv) Nondiagnostic services furnished on or after June 25, 2010, other than ambulance services and maintenance renal dialysis services, that are furnished on the date of the beneficiary's inpatient admission or on the first, second, or third calendar day immediately preceding the date of the beneficiary's inpatient admission and the hospital does not attest that such services are unrelated to the beneficiary's inpatient admission.
(d) Inpatient capital-related costs. For cost reporting periods beginning on or after October 1, 1991, the capital prospective payment system provides a payment amount for inpatient hospital capital-related costs as described in part 413, subpart G of this chapter.
(4) The acquisition costs of hearts, kidneys, livers, lungs, pancreas, and intestines (or multivisceral organs) incurred by approved transplant programs.
(6) For cost reporting periods beginning on or after October 1, 2020, the costs of allogenic hematopoietic stem cell acquisition, as described in § 412.113(e), for the purpose of an allogeneic hematopoietic stem cell transplant.
(f) Additional payments to hospitals. In addition to payments based on the prospective payment system rates for inpatient operating and inpatient capital-related costs, hospitals receive payments for the following:
(1) Outlier cases, as described in subpart F of this part.
(2) The indirect costs of graduate medical education, as specified in subparts F and G of this part and in § 412.105 for inpatient operating costs and in § 412.322 for inpatient capital-related costs.
(4) Bad debts of Medicare beneficiaries, as provided in § 412.115(a).
(8) For discharges on or after June 19, 1990, and before October 1, 1994, and for discharges on or after October 1, 1997, a payment amount per unit for blood clotting factor provided to Medicare inpatients who have hemophilia. For discharges occurring on or after October 1, 2005, the additional payment is made based on the average sales price methodology specified in subpart K, part 414 of this subchapter and the furnishing fee specified in § 410.63 of this subchapter.
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