{"uid":"cap_VrqJl8kfKnHWAb-RiV2Ph","slug":"fittings-rxnorm-ndc-crosswalk-db1dc2cb","name":"fittings RxNorm NDC Crosswalk","description":"Map an RxNorm concept or drug name to every associated NDC package code in 5-4-2 form, or reverse-map an NDC to its RxCUI with active status and history.","url":"https://fittings.sh/v1/rxnorm/ndc-crosswalk","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"ndc":{"type":"string","description":"NDC package code to reverse-map, e.g. 0781-1506-10"},"name":{"type":"string","description":"Drug name, resolved to an RxCUI by exact match first"},"limit":{"type":"number","description":"Maximum NDCs returned, 1-500, default 100"},"rxcui":{"type":"string","description":"RxNorm concept id, e.g. 213269"}}}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01298","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01298/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01298","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01298","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Vi6XT1ML0yMBRpj2EAZWe","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01298","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Maps an RxNorm concept (RxCUI) or drug name to all associated NDC package codes in 5-4-2 format, or reverse-maps an NDC code to its RxCUI with active status and history.","exampleAgentPrompt":"What are all the NDC package codes associated with RxCUI 213269? Give me up to 50 results in 5-4-2 format.","exampleUseCases":[{"title":"Pharmacy formulary NDC population","prompt":"I need all the NDC package codes for the drug lisinopril — can you pull them from RxNorm and return up to 200 results?"},{"title":"Reverse-map NDC for claims adjudication","prompt":"I have an NDC code 0781-1506-10 from a prescription claim and need to find its RxCUI and whether it's currently active."},{"title":"Drug database enrichment pipeline","prompt":"I'm building a medication database — can you look up every NDC code associated with the drug name 'atorvastatin' and return up to 500 of them?"}],"resultDescription":"Returns a list of NDC package codes in 5-4-2 format associated with the queried RxCUI or drug name, or for a reverse lookup returns the RxCUI with its active status and historical records for the given NDC code.","failureModes":["Drug name not matched exactly — returns empty or incorrect set; try using RxCUI directly","RxCUI not found — returns empty NDC list if concept does not exist in RxNorm","NDC not recognized — reverse lookup returns no RxCUI if NDC is not in the database","Limit out of range — error if limit parameter is outside 1-500","Missing required query parameter — error if none of rxcui, name, or ndc is provided"],"whenToPreferThis":"Use this endpoint when you need to translate between RxNorm concept identifiers (RxCUIs) or human-readable drug names and NDC package codes, or when you need to reverse-map an NDC code back to its RxNorm concept with active/inactive status. Prefer this over manual NLM API queries when you want a simple, pay-per-call REST interface without managing API keys or complex pagination.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:51:29.385Z","isFirstParty":false}