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Some organizations that publish code sets author more than one. The coding system, then, to be unique is a concatenation of the name of the coding authority organization and the name of its code set or table. When an HL7 table is used for a CE data type, the name of coding system component is defined as HL7nnnn where nnnn is the HL7 table number. Similarly, ISO tables will be named ISO nnnn, where nnnn is the ISO table number.
This table is not exhaustive and other non-standard coding schemes may be used.
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7 Patient Referral – inline comment updated to new LOINC code 74028-2: Patient referrals containing structured HL7v2 VMR information should contain an OBX as follows which acts as a header. Note that the OBX-4 sub-ID field is the dotted decimal root value that structured child elements must belong. In the example below this is 1 but may be another number. The LOINC value "74028-2^^LN" in OBX-3 Observation Identifier indicates that this OBX is defining the report template ID which can be found in OBX-5 Observation Value (RP).
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- 25. Former user (Deleted) – Develop draft re proprietary barcode messaging via 2.1.9.8 MSH-8 Security (ST) 00008
- 26. Former user (Deleted) & Former user (Deleted) – Develop draft re new Chapter 8. Acknowledgments
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