Medicare Claims Processing Manual (Pub. 100-04), Ch. 13 § 20.3
Anti-Markup Payment Limitation
20.3 – Anti-Markup Payment Limitation
(Rev. 1931, Issued: 03-12-10, Effective: 06-14-10, Implementation: 06-14-10)
Section 1842(n)(1) of the Social Security Act (the Act) establishes payment rules for certain diagnostic
tests (other than clinical diagnostic laboratory tests) where the physician performing or supervising the
test does not share a practice with the billing physician or other supplier. Examples of tests covered
under this rule include, but are not limited to: x-rays, EKGs, EEGs, cardiac monitoring, and ultrasound
services furnished on or after January 1, 1994. (Note that screening mammography services are covered
under another provision of the Act and are not subject to the anti-markup payment limitation.) The anti-
markup payment limitation applies to the technical component or “TC” of certain diagnostic tests that
are payable on the Medicare Physician Fee Schedule (MPFS). Effective January 1, 2009, the anti-
markup payment limitation also applies to the professional component or (“PC”) of diagnostic tests
(other than clinical diagnostic tests). The anti-markup payment limitation only applies when a physician
(or other supplier) orders and bills for a diagnostic test in which the TC or PC is performed by a
physician who does not “share a practice” with the ordering/billing physician (or other supplier). For
more information on the anti-markup payment limitation, see chapter 1, §30.2.9.