Keeping patient records electronically, instead of on paper, didn't change how much hospitals charged per procedure, a study shows. But critics say billing errors can be more subtle. Roy Scott/Ikon Images/Corbis hide caption

itoggle caption Roy Scott/Ikon Images/Corbis

Dave Vockell, CEO of the software company Lyfechannel, takes first place — and wins $20,000 — in the Code-a-Palooza Challenge at Health Datapalooza 2014. David Hathcox/David Hathcox for Health Data Consortium hide caption

itoggle caption David Hathcox/David Hathcox for Health Data Consortium

Dr. Billy Oley (left) talks with Dr. William George in the Beartooth Billings Clinic in Red Lodge, Mont. The hospital became part of the Billings Clinic system in exchange for help with its digital medical records. Eric Whitney for NPR hide caption

itoggle caption Eric Whitney for NPR

As the doctor examines a patient, medical scribe Connie Gayton records the visit using a microhone tethered to her laptop. Brandon Thibodeaux for NPR hide caption

itoggle caption Brandon Thibodeaux for NPR

Heather Garris, a custodian of medical records, organizes patients' files at Colorado Springs Internal Medicine in Colorado Springs, Colo. Barry Gutierrez for NPR hide caption

itoggle caption Barry Gutierrez for NPR

Patient William Wishart, age 4 months, looks on as Dr. Melanie Walker uses a portable computer to enter information from his exam into an electronic medical records system, in North Raleigh, N.C., in November. Chris Seward/MCT /Landov hide caption

itoggle caption Chris Seward/MCT /Landov

Transporting reams of athletes' medical information has become a major burden for the U.S. Olympic Committee, and is one reason it's switching to electronic medical records. Andrew Villegas/KHN/iStockphoto.com hide caption

itoggle caption Andrew Villegas/KHN/iStockphoto.com