I have started a page on the wiki regarding the OHDSI Knowledge / Phenotype Library. There are of course several WGs doing phenotype related activities (APHRODITE, CIRCE, ATLAS / HERMES, LAERTES, PENELOPE). But the library has several standalone requirements I wanted to document (some of which I’ve cribbed from PheKB ).
Feel free to edit the Wiki or or add comments on this thread.