In December 2009, the CDC's National Center for Health Statistics reported the results of its National Ambulatory Medical Care Survey which included data on non-federal office-based physician use of EHR's. In line with other surveys, use of "fully functional" EHR's remains stubbornly low at 6.3%. Use of basic systems rose to 20.5% and use of "any EMR/EHR system" has climbed to 43.9%.
Basic systems include: "patient demographic information, patient problem lists, clinical notes, orders for prescriptions, and viewing laboratory and imaging results". Fully functional systems include the basics plus "medical history and follow-up, orders for tests, prescription and test orders sent electronically, warnings of drug interactions or contraindications, highlighting of out-of-range test levels, and reminders for guideline-based interventions."