Represents a defined collection of entities that may be discussed or acted upon collectively but which are not expected to act collectively, and are not formally or legally recognized; i.e. a collection of entities that isn't an Organization. Represents a defined collection of entities that may be discussed or acted upon collectively but which are not expected to act collectively, and are not formally or legally recognized; i.e. a collection of entities that isn't an Organization. If the element is present, it must have either a @value, an @id, or extensions A unique business identifier for this group. Indicates whether the record for the group is available for use or is merely being retained for historical purposes. Identifies the broad classification of the kind of resources the group includes. If true, indicates that the resource refers to a specific group of real individuals. If false, the group defines a set of intended individuals. Provides a specific type of resource the group includes; e.g. "cow", "syringe", etc. A label assigned to the group for human identification and communication. A count of the number of resource instances that are part of the group. Entity responsible for defining and maintaining Group characteristics and/or registered members. Identifies traits whose presence r absence is shared by members of the group. Identifies the resource instances that are members of the group. Represents a defined collection of entities that may be discussed or acted upon collectively but which are not expected to act collectively, and are not formally or legally recognized; i.e. a collection of entities that isn't an Organization. A code that identifies the kind of trait being asserted. The value of the trait that holds (or does not hold - see 'exclude') for members of the group. If true, indicates the characteristic is one that is NOT held by members of the group. The period over which the characteristic is tested; e.g. the patient had an operation during the month of June. Represents a defined collection of entities that may be discussed or acted upon collectively but which are not expected to act collectively, and are not formally or legally recognized; i.e. a collection of entities that isn't an Organization. A reference to the entity that is a member of the group. Must be consistent with Group.type. If the entity is another group, then the type must be the same. The period that the member was in the group, if known. A flag to indicate that the member is no longer in the group, but previously may have been a member. Person Animal Practitioner Device Medication Substance Types of resources that are part of group. If the element is present, it must have either a @value, an @id, or extensions