ToC+CIM+Mappings+-+HL7+v3

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1. Data Types
The HL7 data types are used by HL7 V3 models (including the CDA model), by the FHIM, by the Clinical Element Model, and, through the ISO 21090 standard, via ISO 13606, are also related to the NEHTA modeling. The models of some of the data types are shown below in UML notation. The full UML diagram is followed by the most common subsets.



1.2 Quantities and Collections of Quantities
These include time stamps, and, through collections, generalized timing properties (intervals, periodic events, etc.)

2.1 Common Message Element Type - Patient Universal
This CMET supports the case where the receiver is assumed to need all data about a living subject patient. While the model allows for a patient that is not necessarily a person, for the purposes of ToC, the patient is always a person.



2.2 CMET - PatientLite Universal
Use to identify a patient only when minimal patient information is needed (as in the case of a clinical document header in a tightly coupled system). The patient is always a person.

2.3 CMET - Patient Identified
This CMET supports the case of closely coupled systems where the receiver only needs the patient's identifier. This may be useful for continuous care coordination data exchange, but probably not an essential element for ToC.

2.4 CMET - Patient Informational
This CMET is used where the receiver is assumed not to need the patient's identifier to process the message. At the same time, the information present is usually not sufficient to attempt a match based on demographics. Probably not a good match for ToC use cases. Again, the model allows for non-person to be a patient, however for the purposes of ToC only persons need to be considered.



2.5 CDA Record Target
Within the CDA model, the patient demographics are represented under RecordTarget. The same base RIM classes are used to represent the same information as in the CMETs above.



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