The SNDS (Système National des Données de Santé): The French Nationwide claims database

Created in France by the “Loi de modernisation du système de santé” of 26 January 2016, the SNDS databases (Système National des Données de Santé or SNDS) is the nationwide healthcare insurance system databases. The SNDS provides, for defined purposes, pseudonymized individual health data from the main medico-administrative databases. The SNDS merges several linked databases using unique pseudonymized patient identifier:

  • Outpatient claims database (SNIIRAM)
  • Hospital discharge summaries database (PMSI)
  • Death registry (CépiDC Inserm)
  • Disability database (from MDPHs – CNSA data)
  • A sample of data from complementary health insurance organizations (expected)

The purpose of the SNDS is to provide these data in order to promote studies, research or evaluations with a public interest and contributing to one of the following purposes:

  • Health information
  • Implementation of health policies
  • Knowledge of healthcare expenditure
  • Informing professionals and institutions about their activities
  • Innovation in the fields of health and medico-social care
  • Surveillance, monitoring and health safety

SNDS data are a major source and a very powerful tool for conducting pharmacoepidemiology studies (for more information, see The national healthcare system claims databases in France, SNIIRAM and EGB: Powerful tools for pharmacoepidemiology, Pharmacoepidemiol Drug Saf. 2017).