Class Codes

Entities are further classified by their class code and determiner code. The determiner code of an entity is responsible from differentiating a type of an entity (i.e. antigen, dose number, material type, etc.) and an instance or series of instances of an entity (an actual vial of vaccine, a box of syringes, etc.). Most entities within the SanteDB system are expected to be stored as instances of entities, classes of entities will primarily be restricted to materials whereby a class of antigens (OPV for example) will have both instances (vials of OPV) and sub-classes of representing dose numbers (OPV0 – OPV3). Provides a summary of the entity classes and how they are classified in the data model.

Entity Class	Class Code	Description
Entity	ENT	An entity is the base class used to represent a person/place/thing in the SanteDB data model.
Material	MAT	A material represents a physical thing to which participates in the delivery of care. For example: a syringe, a box of vaccine, etc.
Manufactured Material	MMAT	A manufactured material represents a material which is manufactured such as diluent, vaccine, syringes, etc.
Place	PLC	A place represents a physical location where health services are provided.
Organization	ORG	An organization represents an administrative structure which employs providers, operates clinics, etc.
Person	PSN	A person represents a human being.
Patient	PAT	Represents a person who receives health services.
Provider	PVD	Represents a person who provides health services.
User	USR	Represents a person who actively uses the system.
Device	DEV	Represents a physical object on which health services data is entered, stored, etc.
Application	APP	Represents a piece of software which is used to access, record or update medical data.