Hi!
Is the term you are using from NDF-RT?
Best regards
Your value does not seem correct to me. It should be a code like 'N0000153235', at least as an FDA rule (FDAC285)
You can test PCLAS values using the web service explained at: http://rxnav.nlm.nih.gov/NdfrtAPIREST.html
For example: http://rxnav.nlm.nih.gov/REST/Ndfrt/parentConcepts.xml?nui=N0000153235
Is OpenCDISC using such web services? That would be interesting to know...