PMSI.md

@@ -68,4 +68,19 @@ L'application i2b2 permet ainsi à un médecin de rechercher l'ensemble des pati
 
 * [Page Wikipedia PMSI](https://fr.wikipedia.org/wiki/Programme_de_m%C3%A9dicalisation_des_syst%C3%A8mes_d%27information
 )
-* [Guide méthodologique du codage PMSI de l'ATIH ](https://www.atih.sante.fr/sites/default/files/public/content/1200/GuideProdResumeSortieMCO.pdf)
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+* [Guide méthodologique du codage PMSI de l'ATIH ](https://www.atih.sante.fr/sites/default/files/public/content/1200/GuideProdResumeSortieMCO.pdf)
+
+## Data structure
+
+### Observation
+| SOURCE ELEMENT  | CONCEPT_CD  | START DATE  | END DATE  |
+|---|---|---|---|---|
+| ICD10 PRIMARY CODE  | Actual code  |Mouvement start   | Mouvenment end   |   |
+|   |   |   |   |   |
+|   |   |   |   |   |
+### Concept codes
+
+### Data types
+PMSI data contains only coded concepts : 
+ * ICD10 codes representing diagnosis for the venue (primary, secondary and related diagnosis are coded
+ * Procedures are natively coded using a french procedure terminology (aka CCAM) a part of these codes are mapped to SNOMED-CT codes
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