| name | map-ema-drugs |
| description | Map EMA centrally authorised product presentations to RxNorm standard concepts. Use when asked to map an EMA product or create/review a mapping.tsv in an EMA product folder. |
Map Drugs: EMA Products
Map EMA centrally authorised product presentations to RxNorm standard concepts.
When to Use
When asked to map an EMA product to RxNorm, or create/review a mapping.tsv in an EMA product folder.
Finding Unmapped Products
To list all product folders that have parsed data but no mapping.tsv:
make find_unmapped
Prerequisites
Refer to the find-concepts skill for how to search for RxNorm concepts, and the map-drugs skill for general mapping principles and the standard workflow.
Input Files
Each product folder under data/ema/products/<ema_number>/ contains:
ema-info.txt: Product metadata (medicine name, active substance, INN, therapeutic area)parsed_data*.tsv: One row per authorised presentation with ma_number, strength, pharmaceutical_form, route_of_administration, packaging, content, pack_size, product_name, active_substance, etc.
Read both files to understand the product before mapping.
Output Format
Create mapping.tsv in the product folder following the schema in the map-drugs skill. The source ID column is ma_number (EU marketing authorisation number from parsed_data.tsv).
One row per ma_number in parsed_data*.tsv. Every presentation must be mapped.
IMPORTANT: Do not assume any logical ordering of ma_number values — they are NOT sorted by strength, dose form, or any other attribute. Always look up each ma_number's actual strength and form from parsed_data*.tsv individually.
If a mapping.tsv already exists, check the mappings and note any needed changes in flag.tsv.
Biosimilars
If ema-info.txt contains Biosimilar: Yes, follow the biosimilar mapping rules in the map-drugs skill.
Validation
After creating or editing mapping.tsv, validate it:
make validate_mapping ARGS="data/ema/products/<ema_number>/mapping.tsv"
Fix any errors, then regenerate combined files:
make generate_mapping_overviews
Flagging Problems
If no suitable RxNorm results exist or mapping needs validation, add a flag.txt in the product folder explaining the issue.
EU-only Products
Some EMA products have no FDA equivalent and no RxNorm concept. Leave concept fields empty, populate suggestion with the ideal concept name, and create flag.txt.
