BO {Ans: Orally Administered Nutrition, Not by Feeding Tube Example: Append modifier BO to enteral nutrients (B4142-B4162) when administered orally.}F1 {Ans: Left Hand, Second Digit Example: Append F1 to CPT code 26340 when manipulation, finger joint, under anesthesia, each joint is performed on the second digit of the left hand.}Q codes {Ans: Identify services that would not be given a CPT code or are not identified by national level II codes but are needed by CMS to facilitate claims processing. Such services include drugs, biological, and other types of medical equipment or services.}K codes {Ans: Are used by Durable Medical Equipment Medicare Administrative Contractors (DME MACs). DME MACs develop new K codes when existing national codes for supplies and certain product categories do not include the codes needed to implement a DME MAC medical review policy.}E2 {Ans: Lower Left Eyelid Example: Append E2 to CPT code 67700 when a blepharotomy, drainage of access, of the left lower eyelid is performed.}C codes {Ans: Are required under the Medicare Outpatient Prospective Payment System (OPPS) for use by hospitals. Other facilities may report at their discretion.}