Thanks for your reply! The reason I’m asking is that I’d like to use the mappings between SNOMED and LOINC to determine which materials (in SNOMED) are consistent with the System axis value of a LOINC concept. I’ve found the mappings between SNOMED materials and LP codes (distributed in RF2 format), but I’m unable to find the link between the LP codes and LOINC test codes, or even the descriptions that go with the LP codes. So even though I have mapping between SNOMED concepts and LP codes, I can’t establish the link between the SNOMED concepts and the values of the System axis (which I can only see in human readable form in the LOINC hierarchy).
I could try to go via the postcoordination mapping, but I should think it will take much longer for that mapping to be complete (with so many more codes to map), and it’s more cumbersome as I’d have to parse those postcoordinations. Do you have any advice on how to proceed?