CPT Knowledgebase - Sep 9, 2021

In the E/M guidelines for critical care services in the CPT 2021 code set, it is unclear how to report code 99291 for initial critical care services per day for physicians of different specialties. For example: Physician A, whose specialty is nephrology, spends 45 minutes with a patient and bills code 99291 on the same day Physician B, whose specialty is pulmonology, spends 50 minutes with the patient, and the time is not overlapping. If the physicians are in the same group practice but different specialties, may both physicians report code 99291?

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