CPT Codes Subject to and Not Subject to the Clinical Laboratory

100 - CPT Codes Subject to and Not Subject to the Clinical Laboratory Fee Schedule (Rev. 1, 10-01-03) HO-437, A3-3628, B3-5114.1 For fee schedule purposes, clinical laboratory services include most laboratory tests listed in codes 80048-89399 of CPT-1996. The CMS issues an update to the laboratory fee schedule each year, with information about whether prices have been determined by CMS or whether the individual A/B MAC (B) must determine the allowable charge. Codes not included are not paid under the laboratory fee schedule but may be paid under the MPFS if covered for Medicare.