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Background: Based on the observation of the misuse of ICD-10 to code the diagnoses in the RIM-P (lack of completeness, conformity and diversity), the Technical Agency for information on Hospital Care (ATIH), which provides tools for collecting medical information, conducted two actions in 2016. First, a chapter devoted to the instructions of coding has been written in the methodological guide of production of the RIM-P, second, a variable "type psy" was added to the ICD-10 nomenclature's file framing ICD-10 coding in the RIM-P. The purpose of this study is to describe the quality of diagnosis coding using ICD-10 in the RIM-P in 2015 and 2016., Methods: The quality of diagnosis coding using ICD-10 in the summaries of activity of the RIM-P national databases was described in 2015 and 2016. The study focused on the completeness, the conformity and the diversity of coding., Results: Between 2015 and 2016, the percentage of summaries without primary diagnosis ("DP") decreased slightly for full-time (5.2% vs. 3.8%), part-time (6.3% vs. 4.9%) inpatient stays and outpatient care (9.9% vs. 8.9%). ICD-10 codes used to code DP or associated diagnosis ("DA"), while prohibited, mainly belong to Chapter V Mental and behavioral disorders. Per year, only one-third of the summaries and one-half of patients had two or more ICD-10 codes reported for inpatient stays (one-fifth of the summaries and one-fourth of the patients for outpatient care). In addition, per year and per facility, the average number of distinct ICD-10 codes used to fill "DP" or "DA" was approximately half as important in part-time hospitalization, as in full-time hospitalization or for outpatient care. Moreover, 90% of the health facilities used<550 distinct ICD-10 codes in full-time inpatient stays,<270 in part-time inpatient stays and<950 for outpatient care to code the "DP" or the "DA". The diversity of ICD-10 codes used was low and similar between 2015 and 2016, especially to describe the socio-economic environment, resistance to treatment or non-compliance., Conclusion: This study emphasizes the need for a collective effort to improve the diversity of the diagnoses' coding in the RIM-P., (Copyright © 2019 Elsevier Masson SAS. All rights reserved.)

Background: French post-acute care and rehabilitation facilities describe and code their activity through the Program for Medicalization of Information Systems (PMSI). A new specific catalogue of rehabilitation procedures (CSARR) has been implemented to code rehabilitation acts since 2013. This study aimed to assess the coherence of the coding of the rehabilitation acts using the CSARR two years after its establishment through the analyze of 3 main items regarding patients and therapists., Methods: We analyzed the use of CSARR for coding rehabilitation acts from the PMSI national database for post-acute care and rehabilitation, in 2015. Analyses were made on specific items characterizing rehabilitation acts: "number of patients", "type of therapists" and "number of therapists"., Results: There were 72,014,731 rehabilitation acts coded in 2015 using CSARR nomenclature; 86% were individual rehabilitation acts. All acts of CSARR, except one, were used to describe rehabilitation activities. Physiotherapists coded the majority of rehabilitation acts (47%), then nurses (14%). Coding errors were identified as the "number of patients", coded with more than one patient for individual acts (13% of the acts) or with less than 2 patients for groups (6% of the acts), or the "number of therapists" coded with only one therapist for rehabilitation acts requiring several professionals., Conclusion: This first assessment indicated a good level of appropriation of the CSARR coding rules in the national PMSI database by post-acute care and rehabilitation facilities. However, a simplification of this catalogue and therapist training could increase the quality of the rehabilitation data., (Copyright © 2018 Elsevier Masson SAS. All rights reserved.)