Allanson, Emma R.Tunçalp, OzgeGardosi, JasonPattinson, Robert CliveFrancis, AndreVogel, Joshua P.Erwich, Jan Jaap H.M.Flenady, Vicki J.Frøen, J. FrederikNeilson, JamesQuach, AmandaChou, DorisMathai, MatthewsSay, LaleGülmezoglu, A. Metin2017-01-232016-11Allanson, ER, Tunçalp, Ӧ, Gardosi, J, Pattinson, RC, Francis, A, Vogel, JP, Erwich, JJHM, Flenady, VJ, Frøen, JF, Neilson, J, Quach, A, Chou, D, Mathai, M, Say, L & Gülmezoglu, AM 2016, 'Optimising the International Classification of Diseases to identify the maternal condition in the case of perinatal death', BJOG : An International Journal of Obstetrics and Gynaecology, vol. 123, no. 12, pp. 2037-2046.1470-0328 (print)1471-0528 (online)10.1111/1471-0528.14246http://hdl.handle.net/2263/58585OBJECTIVE : The WHO application of the tenth edition of the International Classification of Diseases (ICD-10) to deaths during the perinatal period (ICD Perinatal Mortality, ICD-PM) captures the essential characteristics of the mother-baby dyad that contribute to perinatal deaths. We compare the capture of maternal conditions in the existing ICD-PM with the maternal codes from the WHO application of ICD-10 to deaths during pregnancy, childbirth, and the puerperium (ICD Maternal Mortality, ICD-MM) to explore potential benefits in the quality of data received. DESIGN : Retrospective application of ICD-PM. SETTING : South Africa and the UK. POPULATION : Perinatal death databases. METHODS : The maternal conditions were classified using the ICD-PM groupings for maternal condition in perinatal death, and then mapped to the ICD-MM groupings of maternal conditions. MAIN OUTCOME MEASURES : Main maternal conditions in perinatal deaths. RESULTS : We reviewed 9661 perinatal deaths. The largest group (4766 cases, 49.3%) in both classifications captures deaths where there was no contributing maternal condition. Each of the other ICD-PM groups map to between three and six ICD-MM groups. If the cases in each ICD-PM group are re-coded using ICD-MM, each group becomes multiple, more specific groups. For example, the 712 cases in group M4 in ICD-PM become 14 different and more specific main disease categories when the ICD-MM is applied instead. CONCLUSIONS : As we move towards ICD-11, the use of the more specific, applicable, and relevant codes outlined in ICD-MM for both maternal deaths and the maternal condition at the time of a perinatal death would be preferable, and would provide important additional information about perinatal deaths. TWEETABLE ABSTRACT : Improving the capture of maternal conditions in perinatal deaths provides important actionable information.en© 2016 Royal College of Obstetricians and Gynaecologists. This is the pre-peer reviewed version of the following article : Optimising the International Classification of Diseases to identify the maternal condition in the case of perinatal death, BJOG : An International Journal of Obstetrics and Gynaecology, vol. 123, no. 12, pp. 2037-2046, 2016. doi : 10.1111/1471-0528.14246. The definite version is available at : http://onlinelibrary.wiley.comjournal/10.1111/(ISSN)1471-0528.StillbirthPerinatal deathMaternal conditionsClassificationGlobalInternational Classification of Diseases (ICD)ICD-Perinatal Mortality (ICD-PM)Postprint Article