FindTerm=>SearchByCodes result under coding system categories , after filtering, is not finding Term in Ontology Tree.

log into i2b2,org/webclient
navigate to FindTerm=>SearchByCodes
filter by coding system categories=>after filtering by categories , is not finding Term in Ontology Tree.
example: select ICD9 category and search for ' 80 ' in the search box
After the result is displayed=> right click and select find Term in Tree
The concept is not displayed in the Ontology Tree
It finds Terms under ICD10 category(example:A00-B99). But not some of the others I checked
Examples Cat:
NDC=> 00310030011
LOINC=> 2171-7
ICD9=> 80