Code systems are named by free strings
https://kerfors.github.io/usdm-overlay/id/finding/code-system-free-strings
Code.codeSystem and Code.codeSystemVersion are free strings. In the published examples the code system is given in mixed forms, a URL for CDISC terminology and names for the others, and versions in several formats. A coded value is identified by strings, not by an IRI.
- standing
- For discussion: Identifying code systems by strings is a modelling choice; the examples show its effect.
- evidence
- Example-observed
- holds
- true
- observation
- 2631 Code instances. codeSystem / codeSystemVersion pairs: 'http://www.cdisc.org' / '2024-09-27' 2534; 'ISO 3166 1 alpha3' / '2020-08' 42; 'SPONSOR' / '12' 25; 'SNOMED' / 'January 31, 2018' 20; 'ISO' / '1' 7; 'ICD-10-CM' / '1' 1; 'FDA' / '' 1; 'HL7' / '' 1.
- about
- Code
- sources
- https://github.com/cdisc-org/DDF-RA/tree/v4.0.0/Documents/Examples
Test
Check function code_system_free_strings in scripts/check_findings.py.