# 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: ITEM
This class is the abstract parent of CLUSTER and ELEMENT, which represent the data structure and values contained by an ENTRY. ## Specializes ## RECORD_COMPONENT ## Attributes
Name | Data type | Occurs | Description
--- | --- | --- | ---
obs_time | IVL_TS | 0..1 | The date and time, or interval, at which the ITEM actually occurred or was true, if different from the session time of the COMPOSITION.
## Constraints
Type | Name | Specification
--- | --- | ---
emphasis undefined in LRA | LRA Invariant | inv: emphasis.oclIsUndefined()
item category undefined in LRA | LRA Invariant | inv: item_category.oclIsUndefined()
## Reference Model Type ##