How do you appropriately code for Critical Care Services (99291 and 99292)?
A critical care service is time-based. Time counted towards critical care services may be continuous or intermittent and aggregated in time increments on a given day. The total time that critical care services are provided must be documented.
CPT code 99291 is used to report the services of a physician providing full attention to a critically injured patient from 30-74 minutes on a given date.
CPT code 99292 is used to report additional block(s) of time, of up to 30 minutes, each beyond the first 74 minutes of critical care time.
Critical care of less than 30 minutes total duration on a given date should be reported using the appropriate E/M code such as subsequent hospital care.