Lookup Modifiers
Resolve an explicit set of modifier codes to their descriptions.
Backs the printed Super Bill and note, which persist modifiers as bare codes
(e.g. “25”) and need the label (“Significant, separately identifiable…”)
to print beside them. This is an exact batch lookup rather than a reuse of
/modifiers/search because the print paths already know exactly which
codes are on the document, and modifier is ~308 rows against that
endpoint’s 100-row cap — so paging the whole table to build a code -> label
map is not an option.
Codes are matched upper-cased (modifier.code is stored that way, so a
free-typed lower-case modifier still resolves) against the primary key.
Unknown codes are simply absent from the response — the caller prints the
bare code, which is what a superbill did before this endpoint existed.

