Editorial Note on Part 413
Editorial Note: Nomenclature changes to part 413 appear at 76 FR 50537, August 22, 2014.

§ 413.122 Payment for hospital outpatient radiology services and other diagnostic procedures. ( a ) *Basis and purpose.* ( 1 ) This section implements section 1833(n) of the Act and establishes the method for determining Medicare payments for radiology services and other diagnostic procedures performed by a hospital on an outpatient basis.
( 2 ) For purposes of this section— ( i ) Radiology services include diagnostic and therapeutic radiology, nuclear medicine, CAT scan procedures, magnetic resonance imaging, ultrasound and other imaging services; and
( ii ) Other diagnostic procedures are those identified by CMS, and do not include diagnostic radiology procedures or diagnostic laboratory tests.
( b ) *Payment for hospital outpatient radiology services.* ( 1 ) The aggregate payment for hospital outpatient radiology services furnished on or after October 1, 1988 is equal to the lesser of the following: ( i ) The hospital's reasonable cost or customary charges, as determined in accordance with § 413.13, reduced by the applicable Part B annual deductible and coinsurance amounts.
( ii ) The blended payment amount described in paragraph (b)(2) of this section.
( 2 ) The blended payment amount for hospital outpatient radiology services furnished on or after October 1, 1988, but before October 1, 1989, is equal to the sum of— ( i ) 65 percent of the hospital-specific amount (the hospital's reasonable cost or customary charges, whichever is less, reduced by the applicable Part B annual deductible and coinsurance amounts); and
( ii ) 35 percent of a prevailing charge or fee schedule amount that is calculated as 80 percent of the amount determined by subtracting the applicable Part B annual deductible from 62 percent of the prevailing charges (or for services furnished on or after January 1, 1989, the fee schedule amount established) for the same services when furnished by participating physicians in their offices in the same locality.
( 3 ) For hospital outpatient radiology services furnished on or after October 1, 1989, the blended payment amount is equal to the sum of 50 percent of the hospital-specific amount and 50 percent of the fee schedule amount.
( 4 ) For hospital outpatient radiology services furnished on or after January 1, 1991, the blended payment amount is equal to the sum of 42 percent of the hospital-specific amount and 58 percent of the fee schedule amount.
( 5 ) For hospital outpatient radiology services furnished on or after October 1, 1997, the blended payment amount is equal to the sum of— ( i ) 42 percent of the hospital-specific amount; and
( ii ) 58 percent of the fee schedule amount calculated as 62 percent of the sum of the fee schedule amounts payable for the same services when furnished by participating physicians in their offices in the same locality, less deductible and coinsurance as defined in section 1866(a)(2)(A)(ii) of the Act.
( c ) *Payment for other diagnostic procedures.* ( 1 ) The aggregate payment for other diagnostic procedures performed by a hospital on an outpatient basis on or after October 1, 1989 is equal to the lesser of the following: ( i ) The hospital's reasonable cost or customary charges, as determined in accordance with § 414.13, reduced by the applicable Part B annual deductible and coinsurance amounts.
( ii ) The blended payment described in paragraph (c)(2) of this section.
( 2 ) The blended payment amount for other diagnostic procedures furnished on or after October 1, 1989, but before October 1, 1990, is equal to the sum of— ( i ) 65 percent of the hospital-specific amount (the hospital's reasonable cost or customary charges, whichever is less, reduced by the applicable Part B annual deductible and coinsurance amounts); and
( ii ) 35 percent of a prevailing charge amount that is calculated as 80 percent of the amount determined by subtracting the applicable Part B annual deductible from 42 percent of the prevailing charges for the same services furnished by participating physicians in their offices in the same locality.
( 3 ) For other diagnostic procedures performed by a hospital on or after October 1, 1990, the blended payment is equal to 50 percent of the hospital-specific amount and 50 percent of the prevailing charge amount.
( 4 ) For other diagnostic services furnished on or after October 1, 1997, the blended payment amount is equal to the sum of— ( i ) 50 percent of the hospital-specific amount; and
( ii ) 50 percent of the fee schedule amount calculated as 42 percent of the sum of the fee schedule amounts payable for the same services when furnished by participating physicians in their offices in the same locality less deductible and coinsurance as defined in section 1866(a)(2)(A)(ii) of the Act.
[56 FR 8842, Mar. 1, 1991, as amended at 57 FR 36017, Aug. 12, 1992; 65 FR 18542, Apr. 7, 2000]