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Objective: To estimate the screening coverage of neonatal bilateral permanent deafness (NBPD) among neonates in the region of Paris (Île-de-France), between 2012 and 2017, using data from the Program for Medicalization of Information System (PMSI)., Method: The study population covers hospital stays of newborns (0 to 28 days of life) in the region of Paris between 2012 and 2017. The data were extracted from PMSI database using DIAMANT system. The annual screening coverage rate is estimated by the ratio between the number of newborn stays with the code Z13.51 and one of the two specific medical procedures for NBPD screening and the number of live births recorded in health facilities., Results: In 2017, 133 152 newborn stays with a Z13.51 code were counted in the Ile-de-France region, out of 178 011 live births; less than 75% of newborns. Hospital stays including a medical procedure CDQP009 or CDQP017 represent a proportion of 16.3% in 2017. The annual estimated rate of screening coverage of NBPD using the PMSI (89,8%, taking into account the different coding practices) is lower than the one calculated from data of the FPDPHE (95,5%) and national/regional target rate set by the National screening Program., Conclusion: Our methodology and the observed results revealed that an annual NBPD screening coverage rate could be estimated, if the National plan and coding practices requirements follow the guidelines. Harmonization of coding practices and data quality assurance are essential to be able to build an indicator of NBPD screening coverage based on routinely collected data (PMSI, SNDS), which can contribute to the monitoring of the implementation of the screening program for the neonates.