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· Assigning Authority: APHL recommends ASTP include the assigning authority with ANY identifier data element (in all HL7 products this is part of the various supported identifier type data type). This comment applies to Identifier (https://www.healthit.gov/isp/uscdi-data/identifier), Specimen Identifier (https://www.healthit.gov/isp/taxonomy/term/3721/uscdi-v5), Medical Record Number (https://www.healthit.gov/isp/uscdi-data/medical-record-number ), and Medicare Patient Identifier (https://www.healthit.gov/isp/uscdi-data/medicare-patient-identifier). We recommend that the definitions for these data elements include the following language: "Alphanumeric value that uniquely identifies the patient's health record over time, at minimum within one organization, ideally at the national level, including a means to identify the organization or system that assigned it."
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