RxMap/Use cases
MEPS prescribed medicines

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.

The data problem

NDCs describe products, not comparable drugs

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.

Verified example

NDC values become comparable drug concepts

Download enriched Excel
ndc_codeIN_ingredientSCD_semantic_clinical_drugStrength
00093-1048-01MetforminMetformin hydrochloride 500 MG Oral Tablet500 MG
00071-0155-23AtorvastatinAtorvastatin 10 MG Oral Tablet10 MG
00054-8174-25DexamethasoneDexamethasone 1 MG Oral Tablet1 MG

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.

Start converting
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