The pain score observation is a Simple Observation that records the patient's assessment of their pain on a scale from 0 to 10.The ID for this item.MUST contain the OID of the system that issued the ID. OIDs of code systems, which are published in the public OID registry for the Swiss health care system (oid.refdata.ch) are REQUIRED. Others are NOT ALLOWED.Contains the ID itself. The ID MUST be unique within the system that issued the ID.The human-readable text MUST be generated automatically from the structured information of this element. The text element MUST contain the reference to the corresponding text in the human readable part, ONLY.
The statusCode shall be set to 'completed' for all observations.
Date or timestamp of the finding (physiologically relevant time of this observation).