Medicine and Modifiers

Report two codes: the administration code (selected by route, patient age, and whether counseling was provided) PLUS a separate code for the vaccine/toxoid product itself.

Route of administration, patient age, and whether physician/QHP counseling was provided (counseling-based admin codes apply through a defined pediatric age).

Chemotherapy (and other highly complex drug administration) > Therapeutic/prophylactic/diagnostic > Hydration. The highest-ranking service in the hierarchy is normally designated the initial service.

Only ONE initial code is reported per encounter (per vascular access site), based on the highest-ranking service performed; additional/different drugs are sequential, and simultaneous infusions are concurrent.

Because the hierarchy ranks hydration lowest; if a therapeutic or chemo administration occurs, that higher service becomes initial and hydration is reported as a subsequent/secondary service.

There are two evaluation codes - one without medical services and one with medical services (the latter when the practitioner can prescribe/perform medical assessment). Choose based on whether medical services were part of the evaluation.