Make reporting critical care easy with this simple chart. Check the physician's documented total critical care time per date of service to choose the correct units of 99291 and 99292. Duration of care Code(s) Fewer than 30 minutes Other appropriate 30 minutes to 1 hour, 14 minutes 99291 1 hour, 15 minutes to 1 hour, 44 minutes 99291, 99292 1 hour, 45 minutes to 2 hours, 14 minutes 99291, 99292 x 2 2 hours, 15 minutes to 2 hours, 44 minutes 99291, 99292 x 3 2 hours, 45 minutes to 3 hours, 14 minutes 99291, 99292 x 4 3 hours, 15 minutes to 3 hours, 44 minutes 99291, 99292 x 5 For critical care time lasting beyond the examples listed here, simply add one unit of 99292 for each additional 30 minutes, in the same manner illustrated in the chart.
E/M Codes