The D9610 code reads: therapeutic parenteral drug, single administration – Includes single administration of antibiotics, steroids, anti-inflammatory drugs, or other therapeutic medications. This code should not be used to report administration of sedative, anesthetic or reversal agents.
This is someone trying to ‘game’ the system. The definition of parenteral is: Parenteral drug administration means any non-oral means of administration, but is generally interpreted as relating to injecting directly into the body, bypassing the skin and mucous membranes.
After looking into D9610, it would be inaccurate coding. The role of the office/professional is to use the most accurate code. If one exists that is more accurate, it should be used. D4381 localized delivery of antimicrobial agents via a controlled release vehicle into diseased crevicular tissue, per tooth is the accurate code.