Fig. 3From: The interoperability between the Spanish version of the International Classification of Diseases and ORPHAcodes: towards better identification of rare diseasesDistribution of codes analysed in this study. a Relative number of ORPHAcodes assigned to each ICD-10-ES chapter. b Relative amount of ICD-10-ES codes used to establish equivalences to ORPHAcodes per ICD-10-ES chapterBack to article page