The course aims to provide the elements to understand the system of financing hospital admissions: acute - rehabilitation - long-term - solvent, the use of the Clinical Record as an essential tool for the funding of hospitalization, the coding system ICD9 CM - the card hospital discharge (SDO) From the SDO to the DRG, the classification of the main, secondary and / or concomitant diagnoses, the main intervention or procedure and the secondary procedures. Guidelines on the codification of regional and national SDO.