get problems according to human body system about snowstorm

[juanidepapi]

Hello Kai!.
Thank you very much for your answer.

I think I understood your explanation perfectly.
I'll put it to the test and let you know how it went

[kaicode]

Hi juanidepapi,

This would be a two step process:

1. Use a terminology server to select the SNOMED CT concepts of interest
2. Use an EHR/Patient repository to select patients with a matching diagnoses

I can help with the first part!

To create the SNOMED CT query I would recommend starting in a SNOMED CT Browser. Using the International Edition to create this sort of high level query is fine.

Find a concept that best represents the type of finding or diagnoses you are interested in. Following your example I searched for "respiratory disorder" and found 50043002 |Disorder of respiratory system (disorder)|.

Make sure you select a concept with a (finding) or (disorder) tag in the name when searching for diagnoses.

Using the ECL query language we can select all the types of 50043002 |Disorder of respiratory system (disorder)| in SNOMED CT using a descendants of self constraint like this: <<50043002 |Disorder of respiratory system (disorder)|.

We can run that ECL query to fetch the matched concepts by expanding an intensional ValueSet in the FHIR API: /fhir/ValueSet/$expand?url=http://snomed.info/sct?fhir_vs=ecl/<<50043002|Disorder%20of%20respiratory%20system%20(disorder)|

Please note that the public Snowstorm instance (https://snowstorm.ihtsdotools.org/fhir) is for reference and testing purposes only. Please run your own instance of Snowstorm or another SNOMED CT FHIR terminology server for scripting/application development/production purposes.

Does that answer your question?

Kai

[kaicode]

If you look at the children of concept 362965005 |Disorder of body system (disorder)| many of those may be of interest to you. http://snomed.info/id/362965005