Export Medication Class Crosswalk from OMOP Hierarchy — export_medication

Traverses ATC classes and RxNorm ingredient hierarchies to extract descendant RxNorm concept codes, plus historical/retired concepts that map to them via OMOP 'Maps to' relationships.

Usage

export_medication_crosswalk(
  con,
  medication_specs,
  output_path = NULL,
  include_retired = TRUE,
  exclude_forms = NULL,
  must_contain = NULL,
  vocab_schema = NULL,
  vocab_db = NULL
)

Arguments

con: Active DuckDB DBI connection.
medication_specs: Medication class specifications list.
output_path: Optional file path to write exported CSV.
include_retired: Whether to include older retired RxNorm codes mapped via 'Maps to' (default TRUE).
exclude_forms: Optional vector of dosage form strings to exclude (e.g. 'Ophthalmic', 'Topical').
must_contain: Optional vector of required RxNorm codes or source strings; throws error if missing.
vocab_schema: Optional schema containing vocabulary tables.
vocab_db: Optional attached database containing vocabulary tables.

Value

A data frame with columns source_value, drug_class, concept_id, concept_name, concept_class_id, vocabulary_id, source.