Andrew Charlwood b44d22de2c feat: add direct SNOMED lookup functions (Task 1.3) ...

Add two new functions to diagnosis_lookup.py for direct SNOMED code matching:

- get_drug_snomed_codes(drug_name): Query ref_drug_snomed_mapping for all
  SNOMED codes mapped to a drug. Returns list of DrugSnomedMapping with
  snomed_code, snomed_description, search_term, primary_directorate.
  Tested: ADALIMUMAB returns 1320 mappings across 10 Search_Terms.

- patient_has_indication_direct(patient_pseudonym, mappings, connector):
  Query PrimaryCareClinicalCoding for exact SNOMED code matches.
  Returns most recent match by EventDateTime with DirectSnomedMatchResult.

Both functions follow existing patterns in the module and are exported
in __all__. The lookup is case-insensitive for drug names.

2026-02-05 14:14:55 +00:00

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