In late 2006, the CPT added some new codes in their revision. Previously there would have been a need to bill for extra units to capture a procedures base units. With the release of the new moderate sedation codes (99143-99150). The need to bill extra units to capture the procedure’s base unit amounts. Therefore, you should ignore billable units and instead use new time-based codes. A good example would be if a doctor did a procedure that involved 30-minutes of sedation. Previously you would have use 01922 anesthesia designation, you would have used 7 base units and 2 time units (15 minutes = 1 time unit) and you have used …