Convert MEPS NDC codes to RxNorm for drug utilization research
Turn the product-level NDC values in MEPS prescribed medicines files into standardized ingredients, clinical drugs, strengths, and dose forms—without building an RxNav pipeline.
MEPS prescribed medicines files identify dispensed products with NDC values. Manufacturer, formulation, and package differences can split the same clinical drug across many codes, making ingredient-level utilization and expenditure analysis difficult.
The analyzable result
One standardized RxNorm layer
Append RxNorm fields to your working file, then group prescriptions by ingredient or Semantic Clinical Drug while retaining the original NDC and MEPS variables for survey-weighted analysis.
Three steps
From source file to analysis-ready data
01
Export your NDC column
Prepare a CSV, Excel, or TSV file containing the NDC values from your MEPS prescribed medicines extract.
02
Map with RxMap
Select the NDC column. RxMap normalizes the values and retrieves current RxNorm concepts in bulk.
03
Merge and analyze
Download the enriched workbook and merge the new drug fields back into your MEPS analysis file.
Example mappings were checked against the public NIH NLM RxNorm API. RxNorm content changes over time; use your downloaded result as the record of the mapping run.
What this unlocks
Estimate use and expenditures at the ingredient or clinical-drug level.
Group equivalent products across manufacturers and package sizes.
Create reproducible therapeutic cohorts without manual code lists.
Keep the original NDC beside every standardized RxNorm field for auditability.
Make your NDC file analysis-ready
Preview your mapped rows before payment. $0.001 per NDC, with a $1 minimum and $25 maximum per upload.