Stream: C-CDA
Topic: Class code in Result Organizer
Piotr Sokoliński (Oct 25 2021 at 06:47):
Hello, I am mapping FHIR DiagnosticReport and Observation resources into Results Section in the Continuity of Care Document and I have two questions.
- First of all, Result Organizer (https://hl7.org/ccdasearch/templates/2.16.840.1.113883.10.20.22.4.1.html) requires one classCode from CodeSystem: HL7ActClass 2.16.840.1.113883.5.6 STATIC. There are many codes in this system. How can I recognize which classCode should I use when mapping FHIR resources into Result Organizer? I found examples with classCode="CLUSTER" and classCode="BATTER" but again, how to recognize which one should I use? Maybe it should be hardcoded into one of them?
- Moreover, when parsing any FHIR resource into any CDA template, should we use the id of the FHIR resource to create an <id /> tag in the document or we should just stick to the identifier field and use only identifiers to create <id /> tags?
John D'Amore (Nov 13 2021 at 23:39):
So section 4.3.6.5 of the underlying CDA standard explains CLUSTER vs. BATTERY. It's something like this: BATTERY (battery) A battery specifies a set of observations. These observations typically have a logical or practical grouping for generally accepted clinical or functional purposes, such as observations that are grouped together because of automation. CLUSTER (cluster) A group of entries that have a logical association with one another. The Cluster class permits aggregation into a compound statement.
You can look in a large sample of C-CDA documents by multiple technologies for certification here: https://github.com/jddamore/ccda-samples/
You can look at published results samples here: http://cdasearch.hl7.org/sections/Results
Ultimately, I don't think it will have a huge impact whichever you choose, but unless you need complex logical groupings, it may easier to just do BATTERY.
Last updated: Apr 12 2022 at 19:14 UTC
