AAPC Certified Professional Coder (CPC) — All Questions

Two services are ordinarily bundled under NCCI edits, but on this encounter they were performed at separate sites and are genuinely independent. No more specific modifier applies. Which modifier may be appropriate?

• a.Modifier -59 (distinct procedural service)✓
• b.Modifier -22 (increased procedural services)
• c.Modifier -50 (bilateral procedure)
• d.Modifier -26 (professional component)

Modifier -59 unbundles services that NCCI normally pairs together when documentation shows a distinct session, site, lesion, or organ system. It should be used only when no more precise modifier (such as anatomical X{EPSU} modifiers -XE, -XS, -XP, -XU) applies. -59 must never be used simply to bypass an edit for reimbursement without clinical justification.

A psychiatrist provides both a medical E/M service and psychotherapy to the same patient during one encounter. How is this reported?

• a.Report the E/M based on MDM and the psychotherapy add-on based on its own separately documented time, with the two work efforts kept distinct✓
• b.Report a single combined code that covers both
• c.Report only the E/M service and disregard the psychotherapy
• d.Append modifier -50 to the psychotherapy code

Psychotherapy add-on codes are used with an E/M when both services are provided. The E/M is leveled by MDM (time cannot be used because the psychotherapy time is carved out), and the psychotherapy is chosen by its own documented time. The clinician must be able to separate the medical and therapy work in the note.

A nurse administers an influenza vaccine to an established patient in the clinic. What must be coded to fully capture the service?

• a.Only the vaccine/toxoid product code
• b.Both the vaccine/toxoid product code and the immunization administration code✓
• c.Only the immunization administration code
• d.A separate E/M visit for each vaccine given

Immunizations require two codes: the product (the specific vaccine/toxoid) and the administration (how it was given, e.g., percutaneous/intramuscular, with or without counseling for younger patients). Reporting only one undercodes the encounter. A separate E/M with modifier -25 is added only when a significant, separately identifiable evaluation was also performed.