The opinion released by The Centers for Medicare & Medicaid Services (CMS) has said you can bill for twice-daily radiation therapy as long as the treatments happened in “different sessions.” But you have to be careful to follow the rules and avoid getting into trouble by billing for “different sessions” that were really just parts of the same session. A procedure called “hyperfractionation” is defined as any technique of radiation treatment that delivers more than one treatment session per day. If you’re stumped how to make sure that a session is separate from another session, just know this: to be considered separate, two sessions should be at least six hours …