Release Date: 2015-07-31

OID for code system: 2.16.840.1.113883.5.106

OID for value set: 2.16.840.1.113883.1.11.10365 (this is the value set that includes the entire code system)

Level Code Display Definition
1 AND and This condition must be true.
1 OR or At least one of the condition among all OR conditions must be true.
1 XOR exclusive or One and only one of the XOR conditions must be true.