Does anyone know of a classification system for all SNOMED codes by phenotype severity? (e.g., an MI would be severe while a sore throat would be mild). I saw the paper Mary Boland and other OHDSI collaborators did creating the CAESAR framework (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4386082/), and is exactly the thing I'm looking for. But I can't find the list of SNOMEDs and their classifications that could be used in research, and the links from the website provided in that paper are all dead.
Any help is appreciated!