Is cpt4 code 99000 used for a physical exam?

CPT code 99000 is not used for a physical exam; it is specifically designated for handling and/or transport of specimens for laboratory analysis. Physical exams are typically billed using other CPT codes, such as those in the range of 99381-99397, which correspond to preventive medicine evaluations. If you're looking to bill for a physical exam, you'll need to use the appropriate evaluation and management codes instead.