# Logical Record Architecture for Health and Social Care
## Discharge Summary Release 0.02

Contents
The content of this release is not comprehensive and is not fully validated and must not be used in live system implementations.
# Reference Model Abstract Class: ACTIVITY_ELEMENT
The ACTIVITY_ELEMENT class is a BOUND_DATA_ELEMENT whose coded meaning is contrained to represent a SNOMED CT procedure situation. The focus concept of the procedure situation must be subsumed either by 71388002 | procedure | or by 363787002 | observable entity | (for any evaluation activity that does not have a corresponding 'evaluation procedure'). Types of information represented by ACTIVITY_ELEMENT includes: Treatments - procedures that are intended to have a therapeutic, preventative, curative or palliative effect. Investigations - procedures that are undertaken to find out more information about a patient's state of health or wellbeing. Administrative Procedures - procedures, typically of a clerical nature, that support the investigation and/or treatment of a patient. Provision of Advice and Information to Patients and Carers - the activity of providing advice and information about a patient's health or social care, to the patient or to their specified carer. The value attribute is constrained to the null flavor NA | not applicable | so as to prohibit its use within the LRA whilst maintaining conformance to EN 13606-1:2007. ## Specializes ## BOUND_DATA_ELEMENT ## Constraints
Type | Name | Specification
--- | --- | ---
meaning is a procedure | Invariant | --The meaning.code conforms to the specified semantic constraint. inv: meaning.code.semantic(LraProcedureObservationElementMeaning)
value is null | Invariant | -- Attribute value has null flavor NA|not applicable| value.nullFlavor.oclIsDefined and value.nullFlavor = LraAnyNullFlavor.NA