Constrain time ranges in CDA R3

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Submitted by: Keith W. Boone (Kboone) Revision date: 20:42, 24 March 2009 (UTC)
Submitted date: 20:42, 24 March 2009 (UTC) Change request ID: <<Change Request ID>>

Issue

HL7 Data types allow for time ranges to be specified by any two of low, high, center and width. There are six different combinations here. I have found only two of the six to be necessary: low and high, or width alone when a time range is known, but not it's anchors.

Recommendation

Rationale

The rationale for constaining this is that it dramatically simplifies how the information is stored without any loss in what is conveyed.


Discussion

Recommended Action Items

Resolution

March 9, 2010: May conflict with our desire to map another committee's RMIM semantically. The rule is potentially something that should be stated in the RIM or Datatypes specification, such that it is applicable not only to CDA, but to all HL7 V3 models. abstain: 0; opposed: 0; in favor: 7.