title: Use of Administrative Data for the Identificationof Laboratory-Confirmed Influenza Infection: The Validity ofInfluenza-Specific ICD-9 Codes.
abstract: We used Pediatric Health Information System data and laboratory records from 3 children's hospitals to determine whether administrative data accurately identify children with laboratory-confirmed influenza. Among 23 282 inpatients, diagnosis codes for influenza detected 73% of laboratory-confirmed influenza cases, whereas <1% of patients without a diagnosis code had laboratory-confirmed influenza.
authors.affiliation: Children's Hospital of Philadelphia, and Perelman School of Medicine at the University of Pennsylvania, Philadelphia.
authors.forename: Kristen A
authors.initials: KA
authors.lastname: Feemster
authors.affiliation: Children's Hospital of Philadelphia, and.
authors.forename: Kateri H
authors.initials: KH
authors.lastname: Leckerman
authors.affiliation: Children's Hospital of Philadelphia, and.
authors.forename: Maria
authors.initials: M
authors.lastname: Middleton
authors.affiliation: Seattle Children's Hospital, Washington.
authors.forename: Danielle M
authors.initials: DM
authors.lastname: Zerr
authors.affiliation: St Louis Children's Hospital, and.
authors.forename: Alexis M
authors.initials: AM
authors.lastname: Elward
authors.affiliation: Children's Mercy Hospital and Clinics, Kansas City, Missouri.
authors.forename: Jason G
authors.initials: JG
authors.lastname: Newland
authors.affiliation: Nationwide Children's Hospital, Columbus, Ohio.
authors.forename: Lindsey
authors.initials: L
authors.lastname: Asti
authors.affiliation: St Louis Children's Hospital, and.
authors.forename: Rebecca M
authors.initials: RM
authors.lastname: Guth
authors.affiliation: Children's Mercy Hospital and Clinics, Kansas City, Missouri.
authors.forename: Rangaraj
authors.initials: R
authors.lastname: Selvarangan
authors.affiliation: Children's Hospital of Philadelphia, and Perelman School of Medicine at the University of Pennsylvania, Philadelphia.
authors.forename: Susan E
authors.initials: SE
authors.lastname: Coffin
keywords: Electronic Health Record; Influenza Surveillance; Pediatric Health Information System