title: Intussusception-associated hospitalisations in southern Germany.
abstract: The primary objective of this epidemiological surveillance study was to estimate the incidence of intussusception (IS) associated with hospitalisation in children <1, <2 and <17 years of age in Germany. We analysed primary and secondary ICD-10 discharge diagnoses for IS (K56.1) and procedure codes for desinvagination from 28 paediatric hospitals in Bavaria, Germany, to identify children hospitalised in 2005 or 2006 due to IS. A total of 518 children with an ICD-10 code for IS were reported: 123 (23.7%) of the children were <1 year of age, 267 (51.5%) were 1-3 years old and 128 (24.8%) older than 3 years of age. IS was the primary ICD-10 diagnosis in 382 (74%) children, including 231 (60%) children with a procedure code for desinvagination. In 136 (26%) children, IS was reported as a secondary ICD-10 diagnosis, including 38 (28%) with a desinvagination procedure code. The yearly incidence of IS in children <1 year of age was estimated as 72/100,000 overall and as 43/100,000 for those with an additional procedural code for desinvagination. Patients solely with an ICD-10 code for IS are often suspected cases, based on clinical presentation. The combination of the ICD-10 code for IS and a procedure code for desinvagination provides a more specific and clinically relevant case definition, thereby offering a useful tool for long-term surveillance of the incidence of IS.
authors.affiliation: Dr. von Hauner Children's Hospital, Department of Immunology and Infectiology, Ludwig-Maximilians-University of Munich, Munich, Germany.
authors.forename: Lyn J
authors.initials: LJ
authors.lastname: Kohl
authors.forename: Andrea
authors.initials: A
authors.lastname: Streng
authors.forename: Veit
authors.initials: V
authors.lastname: Grote
authors.forename: Sibylle
authors.initials: S
authors.lastname: Koletzko
authors.forename: Johannes G
authors.initials: JG
authors.lastname: Liese
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D005858:Germany / Q000453:epidemiology; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D007223:Infant; D038801:International Classification of Diseases; D007443:Intussusception / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male; D012189:Retrospective Studies; D012307:Risk Factors