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Slide Presentation from the AHRQ 2007 Annual Conference

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RxNorm Lab Evaluation

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  • Completeness
    • 19,824 non-device new prescriptions & renewal requests
      • 195 (0.98%) no matching SCD found;
        • 94% multi-vitamins, bowel preps, drugs packaged in a drug delivery device
      • 18,733 (94.5%) matched by 3 of 3
  • Mismatches
    • 1003 of 19450 with 2+ SCD matches (6.2%)
    • Root causes:
      • RxNorm errors
        • Synonymy already corrected as of Jan, 2007 (20%)
        • Previously unrecognized synonymy (30%)
      • Source errors
        • Bad NDC-to-SCD mappings used by one of the matchers

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