Length of treatment is determined by the areas diagnosed by you for treatment. On each date of service, a maximum of two physical medicine CPT procedures (15 minutes each) per body area, with a maximum of four total CPT codes per date of service, may be billed to insurance. The three body areas that are considered industry standard for physical medicine billing are the axial skeleton, upper extremeties, and lower extremeties. Four total CPT codes would require that a minimum of two or more body areas are diagnosed to be treated. If three body areas are diagnosed for treatment, the maximum CPT usage is still limited to four. If we are given four diagnosis codes, but all of them are in the axial skeleton, the patient is still allowed only two CPT codes per date of service. This is also why it is inadvisable for the patient to see us and the physical therapist on the same day.