validation issues with ICF CodeSystem

[jimsteel]

ICF CodeSystem has validation issues. In particular:

• Quite a few concepts (mostly near the end of the JSON file) have no code
• Codes provide values for a uri property, but this is not declared. Probably should be icd11-uri, which is declared but never used

I also noticed there is also some weirdness in the hierarchy - there are a bunch (actually, quite a lot) of codes that appear as children of "BlockL2-s81 Skin and related structures" that do not belong there (in that they are not skin and related structures codes). This is not a validation problem, but its a bad smell.

[jimsteel]

It looks like the latest iteration of ICF is expressed as an ICD-11 linearization: https://icd.who.int/dev11/l-icf/en

I wonder if we could extend the ICD11Generator from org.hl7.fhir.convertors to generate a (more valid and more up-to-date) CodeSystem?

[grahamegrieve]

sure we could do that. I'm not sure when I'll get to it though. Want to have.a go?

[jimsteel]

Yep