RC

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating a specific vessel (right coronary artery) in a stent placement, balloon angioplasty, and/or atherectomy.

RD

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating drug given to beneficiary but not administered “incident-to.”

Real time

1. Insurance claim processing that occurs immediately as opposed to batch processing (e.g., electronic claims transmission). 2. Immediate imaging to show movements.