RXLens Resources

NDC change readiness checklist.

The FDA is moving every National Drug Code (NDC) to one 12-digit format. The rule takes effect on March 7, 2033[1]. Use this checklist to see what your pharmacy needs to ask, test and teach before then.

What is changing

One drug number format for every product.

An NDC is the number that identifies a drug product and its package. Today the FDA assigns NDCs that are 10 digits long, in more than one layout[1]. Under the final rule published on March 5, 2026, every FDA-assigned NDC will be 12 digits in one layout: 6 digits for the company, 4 for the product and 2 for the package[2].

On March 7, 2033, the FDA will start assigning 12-digit NDCs and will convert every existing 10-digit NDC to the 12-digit format[1]. The FDA asks pharmacies, payers and the rest of the supply chain to start preparing as soon as possible[1].

Key dates from the FDA

  1. March 5, 2026Final rule published in the Federal Register[2].
  2. Now to March 6, 2033The FDA keeps assigning 10-digit NDCs in today's formats[1].
  3. March 7, 2033Rule takes effect. The FDA assigns 12-digit NDCs and converts all existing 10-digit NDCs[1].
  4. March 7, 2033 to March 6, 2036Three-year transition for drug labels to be updated and old label stock used up[1].
  5. After March 7, 2036Drugs labeled with a 10-digit NDC may be subject to FDA regulatory action[1].

Seen a different date? Go by the FDA. The dates on this page come from the FDA's own page on the final rule[1].

Your progress
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Tick each item as you finish it.

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    The checklist

    Five areas to work through.

    Each item is a question to ask or a test to run. Most of the answers will come from the companies you already work with.

    Pharmacy system

    0 of 5

    The software you use to fill, label and bill prescriptions, plus anything else in the store that stores a drug number.

    Wholesaler and supplier files

    0 of 4

    The price files, catalogs and invoices you receive from the companies you buy from.

    Claims and billing

    0 of 5

    How prescriptions are billed to insurance plans and how you prove a claim was right later.

    Labels and barcodes

    0 of 4

    What prints on prescription labels and what your scanners read.

    Staff

    0 of 4

    The people who check, fill and bill prescriptions every day.

    Want a second set of eyes on your claims?

    RXLens reviews every claim, every day, and keeps the proof you need when a plan audits you. Talk with us about getting ready for the NDC change.

    Or reach us at rxlens@ayaanis.com or 215-666-0376.

    Sources

    Where these facts come from.

    1. U.S. Food and Drug Administration. National Drug Code Format. fda.gov
    2. Federal Register. Revising the National Drug Code Format and Drug Label Barcode Requirements, final rule, March 5, 2026. federalregister.gov

    This checklist is general information to help you plan. It is not legal or regulatory advice. Check with your providers, your plans and the FDA for requirements that apply to your pharmacy.