Medicare rules for billing Radiology service

Billing for Services


A physician or other supplier may bill and receive Part B payment for the technical component (TC) or professional component (PC) of diagnostic tests which the physician or other supplier contracts a physician, medical group, or other supplier to perform. (This claim and payment procedure does not extend to clinical diagnostic laboratory tests.) The anti-markup rule will apply to the TC or PC of diagnostic tests that have been ordered by the billing physician or other supplier (or by a party financially related to the billing physician or other supplier through common ownership or control) if the performing physician or other supplier does not meet the criteria for “sharing a practice” with the ordering/billing entity. An example is when the attending physician orders radiology tests from a radiologist and the radiologist purchases the tests from an imaging center with whom the radiologist does not meet the criteria for “sharing a practice.” Under the anti-markup payment limitation, the billing physician or other supplier may not mark up the charge for a test from the acquisition price and must accept as full payment for the test (even if assignment is not accepted) the lowest of: the fee schedule amount as if the performing physician or other supplier had billed directly, the billing entity’s actual charge, or the performing physician or other supplier’s net charge to the billing entity. The billing physician or other supplier must be financially related to the physician or group that ordered the tests through common ownership or control.


If the performing physician or other supplier meets the criteria for “sharing a practice” with the billing physician or other supplier, then the anti-markup payment limitation will not apply and the lower of the physician fee schedule amount or the billed amount will be paid.

The physician or other supplier that performed the component that is subject to the anti-markup rule must be enrolled in the Medicare program. No formal reassignment is necessary; however, reassigned services are also subject to the anti-markup payment limitation.


A. Radiology Services

Contractors shall apply the anti-markup payment limitation to the TC and PC of radiology diagnostic testing services other than screening mammography procedures.



B. Payment to a Physician or Other Supplier of Diagnostic Tests for Services Subject to the Anti-Markup Payment Limitation

A physician or other supplier that provides diagnostic tests may bill and receive the Part B payment for the TC or PC of diagnostic tests which that physician or other supplier acquires from another physician, medical group, or other supplier. If the performing physician does not meet the requirements for sharing a practice with the ordering/billing physician or other supplier, then the anti-markup payment limitation rules will apply. If the performing physician is deemed to share a practice with the physician or other supplier that ordered the test, then the physician fee schedule amount may be billed and the anti-markup payment limitation will not apply. In either case, the performing physician or other supplier must be enrolled in the Medicare program. No formal reassignment is necessary; however, the anti-markup payment limitation will apply to reassigned services.


If the anti-markup rules apply, payment may not exceed the lowest of the following amounts:

• The performing physician or other supplier’s net charge to the billing physician or other supplier;*

• The billing physician or other supplier’s actual charges; or

• The fee schedule amount allowed for the test if the performing physician or other supplier billed directly.

*The net charge must be determined without regard to any charge that is intended to reflect the cost of equipment or space leased to the performing physician or supplier by or through the billing entity. For more information, see Pub. 100-04, chapter 1, §30.2.9.
The billing physician or other supplier must keep on file the name, address, and NPI of the physician or other supplier who performed the anti-markup service.