Posts by George Koromia, MD

Conformance Drift in Consolidated CDA R2; Part One of Three

The HL7 Consolidated Clinical Document Architecture (C-CDA) Release 2 ballot received an unprecedented 1,000+ comments. A number of those comments include proposals to tighten various constraints within the document. Although tightened constraints sometimes are necessary, they may also represent bad spec design in the form of a “conformance drift,” a situation in which increasingly restrictive conformance verbs are applied to truly optional elements thus idealizing one implementation of the spec to the exclusion of others.

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