An article in the February 2005 Ophthalmology Coding Alert, "Coding IOL Masters and A-Scans Together? Read This First," referred to a "modifier indicator" found in the Medicare National Physician fee schedule Relative Value File. The correct term is "bilateral surgery indicator."
Bilateral surgery indicators, found for each CPT code in column "T" of the fee schedule database, determine how Medicare reimburses codes that are reported bilaterally.
We apologize for any confusion we may have caused.