All the rules are set out in the HDS certification – Accreditation reference system and the COFRAC’s "Exigences spécifiques pour l’accréditation des organismes procédant à la certification de systèmes de management dans le domaine des technologies de l’information" (Specific requirements for structures that certify management systems in the information technology sector), available in our Documentation section.

To find out more about the list of certified and accredited bodies, click on the links below.

There are 6 types of activities that make you eligible as a health data host:

1. providing and monitoring the operations of a physical site that hosts the material infrastructure of the IS used to treat health data;
2. providing and maintaining the structural material used by the IS to host health data;
3. providing and maintaining a platform that hosts the IS applications;
4. providing and maintaining a digital structure for the IS which hosts health data;
5. the administration and exploitation of the IS which contains the health data;
6. health data backup services.

The full list of HDS-certified activities is available here: 

The list of connected services is available online.

Guarantees are set out on the dedicated page.

The evaluation is done in two phases. It is conducted by the certifying body, which must verify the compliance with the certification requirements set out in the HDS Certification document (available below).

The audit also verifies the specific requirements for health data hosting are being met. 

Health professionals are encouraged to use MOS and NOS for three main reasons :

• enhance the interoperability of information systems by harmonising names, attributes, codes and nomenclatures;
• share the same understanding of the information, regardless of which directory or reference document it is taken from;
• facilitate the specification, analysis and conception of a project. 

The ANS offers training on MOS-NOS and the elaboration method for exchanges’ functional specs (see our Documentation section).

The illustration below gives you examples of the types of professionals using the MOS-NOS: 

The MOS is a collection of concepts described homogeneously and neutrally in terms of technologies. It offers a common description of the information processed and exchanged in the information systems to make digital communication easier.

The overall consistency of the MOS is founded on the definition and description of its UML (Unified Modelling Language) concepts.

Some MOS concepts can be coded. They are associated with the nomenclatures of health objects (NOS), i.e. lists of codes/labels.

You are encouraged to use MOS and NOS to :

• optimise and coordinate efforts when you analyse or conceive a system (or an application) by re-using the same semantic components;
• make sure there is consistency in your internal developments and with external systems, for the best possible interoperability.

The European Commission’s studies have determined there is a need for a base vocabulary, such as MOS and NOS, which can be used as a starting point for:

• develop and evolve information systems (IS) to formalise the conceptual and logical data they utilise (for instance, the MOS is a reference for the modelling of the RPPS);
• share information between ISs to create specific models of data they can use (thus, the MOS is underlying the ROR exposure model);
• combine and synthetise elements originating from different sources;
• publish data in a common format, such as a directory or catalogue of service (for example, the Annuaire Santé / Health Pro Directory).