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Find My GLP-1 Path

NDC Numbers for Wegovy, Zepbound, Ozempic & Mounjaro

By The RX Index Editorial Team — The RX Index is a pricing intelligence and comparison resource for GLP-1 telehealth providers.

Published: · Last reviewed:

Last verified:

What this is: an NDC lookup and billing-format reference for pharmacy, insurance, copay-card, and prior-authorization tasks. It is not medical, prescribing, or billing advice, and it is not a promise of coverage. Always match a code to the exact package being dispensed before you submit anything.

If you searched “NDC numbers for Wegovy Zepbound Ozempic Mounjaro,” you probably didn’t come here to read about weight loss. You came for a number — because a pharmacy, an insurance rep, a prior-authorization form, or a copay card just asked you for one, and the codes you keep finding don’t match the box in front of you.

There is no single NDC for each of these drugs. An NDC (National Drug Code — the FDA’s ID number for one specific drug package) changes with the brand, the dose, and the package type. So “Wegovy NDC” or “Zepbound NDC” isn’t a complete question until you add the dose and whether it’s a pen, a vial, or a KwikPen.

For the packages people search most, the current pen codes are:

DrugCommon pen searched10-digit NDC11-digit billingNo-hyphen claim string
Wegovy2.4 mg pen0169-4524-1400169-4524-1400169452414
Zepbound5 mg pen0002-2495-8000002-2495-8000002249580
Ozempic0.25/0.5 mg pen0169-4181-1300169-4181-1300169418113
Mounjaro5 mg pen0002-1495-8000002-1495-8000002149580

These are current, common package examples. Further down, a few rows are marked superseded or future-listed — don’t bill those as current. Match every code to your dispensed box before you submit it.

What we actually verified

We don’t want you billing a guess, so here’s exactly where this data stands.

Verified against current DailyMed labeling, the FDA NDC Directory, FDA Structured Product Labels, or the manufacturer’s published package list (checked June 15, 2026):

  • The three-segment NDC structure and the 11-digit “5-4-2” billing rule
  • The Wegovy 0.25, 0.5, and 1 mg pen codes
  • All six Zepbound single-dose pen codes and all six single-dose vial carton codes
  • The three current Ozempic pen codes and their concentrations
  • The Zepbound 2.5 mg/dose multidose-vial and 2.5 mg KwikPen codes

Listed in the official NDC directories — confirm the exact dose and package on your carton before billing (tagged “Listed — verify package”):

The remaining Wegovy doses, the Wegovy tablet codes, the Zepbound 1-pack vials / higher-strength KwikPens / multidose vials, and the full Mounjaro set.

Status labels used in the tables below:

  • ✓ Verified — confirmed code, dose, and package against a primary source.
  • Listed – verify — appears in official NDC listings; confirm against your dispensed carton and the FDA NDC Directory before billing.
  • Future – not billable — the listing shows a future marketing-start date, so it isn’t a current package.
  • Superseded — an older package that’s been replaced.

Which NDC do I use — package NDC, product NDC, or the 11-digit billing version?

For pharmacy, insurance, copay, and reimbursement tasks, start with the exact package NDC for the product being dispensed, then convert it to the 11-digit format if the system asks for it. A “product NDC” describes the drug and strength broadly; a “package NDC” identifies the specific box, and that’s what most claims and copay cards check.

Quick definitions:

Product NDC
— identifies the drug, strength, and form in general. Usually too broad for a pharmacy claim on its own.
Package NDC
— identifies the actual package (the box). This is usually what you need.
10-digit NDC
— the format printed on the carton and shown in most databases.
11-digit NDC (the “5-4-2” format)
— the standardized billing format insurers and pharmacy systems use.
No-hyphen claim string
— the same 11-digit code with the dashes removed, which is what many claim systems want typed in.

How to use this page without picking the wrong code — five steps:

  1. Find your brand below.
  2. Match your dose (the milligrams on the box).
  3. Match your package type (pen vs. vial vs. KwikPen — look at the carton).
  4. Copy the 10-digit code if the form asks for the “package NDC.”
  5. Copy the 11-digit or no-hyphen string if the pharmacy, claim form, or insurer asks for “billing format.”
The honest part: the right NDC can still fail. A correct NDC is not a magic coverage code. Even the exact right number can reject if your plan excludes the drug, requires prior authorization, limits the dose or quantity, or prefers a different package. If that’s your situation, see Why was my NDC rejected? below.

How do I convert a GLP-1 NDC to the 11-digit billing format?

To convert any of these GLP-1 codes to the 11-digit “5-4-2” billing format, add a single leading zero to the front so the first segment has five digits, then drop the hyphens if the system wants a plain string. Every Wegovy and Ozempic code starts with Novo Nordisk’s labeler 0169, and every Zepbound and Mounjaro code starts with Eli Lilly’s 0002 — both print in a 4-4-2 pattern, so the rule is identical for all four drugs.

The one thing to remember: 0169 becomes 00169, and 0002 becomes 00002. That’s it. The middle and end segments don’t change.

10-digit (on the box)11-digit billing (5-4-2)No-hyphen claim string
0169-4524-14 (Wegovy 2.4 mg pen)00169-4524-1400169452414
0002-2495-80 (Zepbound 5 mg pen)00002-2495-8000002249580
0169-4181-13 (Ozempic 0.25/0.5 mg pen)00169-4181-1300169418113
0002-1495-80 (Mounjaro 5 mg pen)00002-1495-8000002149580

Three things that prevent rejections:

  • When a CMS-1500 or payer form asks for an NDC qualifier, many billing guides put the qualifier N4 before the 11-digit number. Follow your specific payer’s instructions.
  • The most common mistake is dropping the leading zero. Submitting the raw 10-digit code where 11 digits are required is one of the most common reasons drug claims reject.
  • Submit the code that matches the package dispensed, not just the dose.

Convert a 10-digit NDC to 11 digits

Paste a 10-digit NDC (with or without hyphens) — get the 11-digit billing format and the no-hyphen claim string, with copy buttons.

Wegovy NDC numbers by dose and package type

Manufacturer: Novo Nordisk · Labeler code: 0169

Wegovy NDC numbers vary by dose and presentation — single-dose pens, oral tablets, and the high-dose (HD) pen each have different package codes. A Wegovy code from one dose or format should never be reused for another package. Wegovy injection comes as a once-weekly single-dose pen delivering 0.25, 0.5, 1, 1.7, or 2.4 mg, and Novo Nordisk’s labeling also lists a 7.2 mg HD injection and oral tablets.

Wegovy single-dose pen NDCs

Dose10-digit NDC11-digit billingNo-hyphen claim stringStatus
0.25 mg pen0169-4525-1400169-4525-1400169452514✓ Verified
0.5 mg pen0169-4505-1400169-4505-1400169450514✓ Verified
1 mg pen0169-4501-1400169-4501-1400169450114✓ Verified
1.7 mg pen0169-4517-1400169-4517-1400169451714Listed – verify
2.4 mg pen0169-4524-1400169-4524-1400169452414Listed – verify
7.2 mg HD pen0169-4572-1400169-4572-1400169457214Listed – verify

Wegovy oral tablet NDCs

DailyMed lists Wegovy tablets at 1.5, 4, 9, and 25 mg, each with its own package NDC. Confirm the dispensed bottle and the FDA NDC Directory before billing.

Dose10-digit NDC11-digit billingNo-hyphen claim stringStatus
1.5 mg tablet0169-4415-3100169-4415-3100169441531Listed – verify
4 mg tablet0169-4404-3100169-4404-3100169440431Listed – verify
9 mg tablet0169-4409-3100169-4409-3100169440931Listed – verify
25 mg tablet0169-4425-3100169-4425-3100169442531Listed – verify

A note on the Wegovy single-dose syringe: Wegovy is also labeled in a single-dose prefilled syringe (the 0169-16xx code family). As of June 15, 2026, those syringe packages show a future marketing-start date in DailyMed, so they are not current billable packages — confirm status in the FDA NDC Directory first.

Keep straight: Wegovy and Ozempic both contain semaglutide, but for billing they are not interchangeable. Use a Wegovy code only for a Wegovy package.

Source: DailyMed Wegovy label and FDA NDC Directory, checked June 15, 2026.

Zepbound NDC numbers by dose and package type

Manufacturer: Eli Lilly · Labeler code: 0002

Zepbound NDC numbers depend heavily on package type — a 5 mg pen, a 5 mg single-dose vial, a 5 mg multidose vial, and a 5 mg KwikPen all carry different codes. So “Zepbound 5 mg NDC” isn’t specific enough until you know the package. Zepbound is available as single-dose pens, single-dose vials (the lower-cost self-pay vials), multidose vials, and the single-patient-use KwikPen, all in 2.5, 5, 7.5, 10, 12.5, and 15 mg.

Zepbound single-dose pen NDCs (4-pen carton)

Dose10-digit NDC11-digit billingNo-hyphen claim stringStatus
2.5 mg pen0002-2506-8000002-2506-8000002250680✓ Verified
5 mg pen0002-2495-8000002-2495-8000002249580✓ Verified
7.5 mg pen0002-2484-8000002-2484-8000002248480✓ Verified
10 mg pen0002-2471-8000002-2471-8000002247180✓ Verified
12.5 mg pen0002-2460-8000002-2460-8000002246080✓ Verified
15 mg pen0002-2457-8000002-2457-8000002245780✓ Verified

Zepbound single-dose vial NDCs (4-vial carton)

Dose10-digit NDC11-digit billingNo-hyphen claim stringStatus
2.5 mg, 4-vial0002-0152-0400002-0152-0400002015204✓ Verified
5 mg, 4-vial0002-0243-0400002-0243-0400002024304✓ Verified
7.5 mg, 4-vial0002-1214-0400002-1214-0400002121404✓ Verified
10 mg, 4-vial0002-1340-0400002-1340-0400002134004✓ Verified
12.5 mg, 4-vial0002-1423-0400002-1423-0400002142304✓ Verified
15 mg, 4-vial0002-2002-0400002-2002-0400002200204✓ Verified

Single vials are also sold as a 1-pack (package code -01, e.g., 2.5 mg = 0002-0152-01 → 00002015201). Confirm the pack size on your carton before billing.

Zepbound multidose vial NDCs (4 doses per vial)

Dose per injection10-digit NDC11-digit billingNo-hyphen claim stringStatus
2.5 mg/dose0002-6052-1100002-6052-1100002605211✓ Verified
5 mg/dose0002-6103-1100002-6103-1100002610311Listed – verify
7.5 mg/dose0002-6210-1100002-6210-1100002621011Listed – verify
10 mg/dose0002-6304-1100002-6304-1100002630411Listed – verify
12.5 mg/dose0002-6523-1100002-6523-1100002652311Listed – verify
15 mg/dose0002-6612-1100002-6612-1100002661211Listed – verify

Zepbound KwikPen NDCs (multidose, 4 doses per pen)

Dose per injection10-digit NDC11-digit billingNo-hyphen claim stringStatus
2.5 mg0002-3566-1100002-3566-1100002356611✓ Verified
5 mg0002-3555-1100002-3555-1100002355511Listed – verify
7.5 mg0002-3544-1100002-3544-1100002354411Listed – verify
10 mg0002-3533-1100002-3533-1100002353311Listed – verify
12.5 mg0002-3522-1100002-3522-1100002352211Listed – verify
15 mg0002-3511-1100002-3511-1100002351111Listed – verify

Before you use a Zepbound code, ask one question. When you call the pharmacy, say: “Can you confirm whether this is being billed as the Zepbound pen, single-dose vial, multidose vial, or KwikPen? I want the NDC to match the actual package.” That one sentence catches most Zepbound mismatches.

If your question is specifically about Zepbound vials under the Medicare GLP-1 Bridge, see our Bridge-specific Zepbound vial guide — this page covers the codes; that one covers the coverage rules.

Source: FDA Structured Product Label and Eli Lilly published package/price listings for Zepbound, checked June 15, 2026.

Ozempic NDC numbers by dose

Manufacturer: Novo Nordisk · Labeler code: 0169

The current Ozempic codes are the three multidose pens — the 0.25/0.5 mg dose pen, the 1 mg dose pen, and the 2 mg dose pen — each with its own NDC. Ozempic’s packaging has changed over the years, so older and retired codes still circulate online. Keep current codes separate from retired ones so you don’t submit a dead number.

Current Ozempic pen NDCs

Pen (dose options)10-digit NDC11-digit billingNo-hyphen claim stringStatus
0.25/0.5 mg pen (2 mg/3 mL, red label)0169-4181-1300169-4181-1300169418113✓ Verified
1 mg pen (4 mg/3 mL)0169-4130-1300169-4130-1300169413013✓ Verified
2 mg pen (8 mg/3 mL)0169-4772-1200169-4772-1200169477212✓ Verified

Older Ozempic codes you may still see — do not bill as current

Ozempic’s pens were reformulated: the older 0.25/0.5 mg pen was 2 mg/1.5 mL while the current one is 2 mg/3 mL. That means some retired codes (e.g., the older 0169-4132 pen) still float online. Don’t bill a retired code as current — confirm “Active” marketing status in the FDA NDC Directory before you submit it. DailyMed also lists certain Ozempic syringe codes with a future marketing-start date; those aren’t current packages either.

Source: DailyMed Ozempic label, FDA label, and FDA NDC Directory, checked June 15, 2026.

Mounjaro NDC numbers by dose and package type

Manufacturer: Eli Lilly · Labeler code: 0002

Mounjaro NDC numbers vary by dose and package — single-dose pens, single-dose vials, multidose vials, and KwikPens each have their own codes. The right Mounjaro code for a claim or coverage check has to match the exact package being dispensed. Codes below come from DailyMed’s Mounjaro listing; confirm the exact dose and package against your dispensed carton before billing.

Mounjaro single-dose pen NDCs

Dose10-digit NDC11-digit billingNo-hyphen claim stringStatus
2.5 mg pen0002-1506-8000002-1506-8000002150680Listed – verify
5 mg pen0002-1495-8000002-1495-8000002149580Listed – verify
7.5 mg pen0002-1484-8000002-1484-8000002148480Listed – verify
10 mg pen0002-1471-8000002-1471-8000002147180Listed – verify
12.5 mg pen0002-1460-8000002-1460-8000002146080Listed – verify
15 mg pen0002-1457-8000002-1457-8000002145780Listed – verify

Mounjaro single-dose vial NDCs

Dose10-digit NDC11-digit billingNo-hyphen claim stringStatus
2.5 mg vial0002-1152-0100002-1152-0100002115201Listed – verify
5 mg vial0002-1243-0100002-1243-0100002124301Listed – verify
7.5 mg vial0002-2214-0100002-2214-0100002221401Listed – verify
10 mg vial0002-2340-0100002-2340-0100002234001Listed – verify
12.5 mg vial0002-2423-0100002-2423-0100002242301Listed – verify
15 mg vial0002-3002-0100002-3002-0100002300201Listed – verify

Mounjaro multidose vial NDCs (4 doses per vial)

Dose per injection10-digit NDC11-digit billingNo-hyphen claim stringStatus
2.5 mg/dose0002-4052-1100002-4052-1100002405211Listed – verify
5 mg/dose0002-4103-1100002-4103-1100002410311Listed – verify
7.5 mg/dose0002-4210-1100002-4210-1100002421011Listed – verify
10 mg/dose0002-4304-1100002-4304-1100002430411Listed – verify
12.5 mg/dose0002-4523-1100002-4523-1100002452311Listed – verify
15 mg/dose0002-4612-1100002-4612-1100002461211Listed – verify

Mounjaro KwikPen NDCs (multidose, 4 doses per pen)

Dose per injection10-digit NDC11-digit billingNo-hyphen claim stringStatus
2.5 mg0002-3466-1100002-3466-1100002346611Listed – verify
5 mg0002-3455-1100002-3455-1100002345511Listed – verify
7.5 mg0002-3444-1100002-3444-1100002344411Listed – verify
10 mg0002-3433-1100002-3433-1100002343311Listed – verify
12.5 mg0002-3422-1100002-3422-1100002342211Listed – verify
15 mg0002-3411-1100002-3411-1100002341111Listed – verify

Mounjaro and Zepbound are not the same code. They both contain tirzepatide, but they’re different brand products with different labels and different package NDCs. A Mounjaro 5 mg pen and a Zepbound 5 mg pen do not share a number. Don’t swap one for the other on a claim.

Source: DailyMed Mounjaro label and FDA NDC Directory, checked June 15, 2026.

Which GLP-1 NDCs are current, ended, or future-listed?

Some GLP-1 NDCs in the official labels are current, some have been retired (marketing ended), and some are future-listed with a marketing-start date that hasn’t arrived yet. Use the current package rows for normal lookup, treat retired codes as historical, and don’t bill a future-listed code unless the dispensed package and the FDA NDC Directory show it’s active.

This matters most for Ozempic (the 0.25/0.5 mg pen switched from 2 mg/1.5 mL to 2 mg/3 mL, so an older pen code is retired) and for the Wegovy single-dose syringe (future-listed as of June 2026). The fix for both is the same: read the NDC off the box, then confirm it shows “Active” in the FDA NDC Directory before you submit it.

Why does my pharmacy or insurance say the GLP-1 NDC is wrong?

A GLP-1 NDC can get rejected even when the drug name is right — usually because the dose, package type, billing format, or a coverage rule doesn’t match. The fastest fix is to find out whether the rejection is about the code (wrong package or format) or about coverage (prior authorization, quantity limit, formulary), because those are two different problems.

Common causes, starting with what to check first:

  • Wrong package type (pen billed as vial, or vice versa)
  • Wrong dose
  • 10-digit code entered where 11 digits are required
  • Hyphens left in (or removed) when the system wanted the other format
  • A retired (ended) code or a future-listed code
  • Plan covers a different brand or package than the one written
  • Prior authorization required and not yet on file
  • Quantity limit (your plan caps the amount per fill)
  • Diagnosis/indication mismatch
  • Pharmacy is out of stock of that exact package
  • Copay card doesn’t apply to that package or plan type

Pharmacy call script (copy this)

“Can you tell me the exact NDC you’re billing, and whether the rejection says non-covered NDC, prior authorization required, quantity limit, refill-too-soon, diagnosis/indication mismatch, copay-card ineligible, or out of stock? I want to confirm the NDC matches the exact package being dispensed.”

Insurance call script (copy this)

“I’m checking coverage for [drug], [dose], [package type]. Can you confirm whether this exact 11-digit NDC is covered, whether prior authorization is required, and whether there are quantity limits or a preferred package?”

If you’re a patient sorting out coverage (if you’re a biller and just needed the code, you’re done — bookmark this and skip ahead): all four of these are FDA-approved brand-name medications, and whether your plan pays usually comes down to prior-authorization paperwork. Ro offers a free GLP-1 insurance coverage checker for Ozempic, Wegovy, and Zepbound that contacts your insurer for coverage details without submitting a treatment request or writing a prescription. If you go on to start care through Ro and a prior authorization is required, Ro says its insurance team can handle the paperwork.

Check your coverage with Ro → (sponsored affiliate link, opens in a new tab)

This is an affiliate link — if you start care through it, we may earn a commission at no extra cost to you. We point here because these are FDA-approved brand drugs and Ro’s free checker is genuinely useful for this exact step. Confirm current details on ro.co.

Just want to compare cash-pay prices first? See our cheapest GLP-1 without insurance guide instead.

Does an NDC mean the medication is FDA-approved or covered by insurance?

No. An NDC identifies a listed drug package — it does not, by itself, mean the FDA approved the product or that your insurance will cover it. The FDA says the NDC Directory is updated daily but the entries are submitted by labelers, and a code being listed does not mean the FDA verified the information, approved the product, or determined that it’s eligible for reimbursement.

What an NDC does mean:

It’s a unique ID that lets pharmacies, insurers, and computer systems tell one specific drug package apart from another.

What an NDC does not mean:

  • That the medication is covered by your plan
  • That your copay card will apply
  • That the package is in stock
  • That it can be swapped for another brand
  • That the final price is known

How to verify any NDC in 30 seconds (FDA NDC Directory)

The most reliable source for an NDC is the dispensed package itself, confirmed against the FDA NDC Directory, which updates daily. This five-step check catches retired codes, wrong packages, and typos before they cost you a denial.

  1. Read the NDC off the carton or label of the exact product being dispensed. (No box? Ask the pharmacy for the exact NDC they’re billing.)
  2. Open the FDA NDC Directory and paste the code.
  3. Confirm the Marketing Status is “Active.”
  4. Zero-pad to 11 digits (0169 00169, 0002 00002), and drop hyphens if needed.
  5. Match the dose and package to your prescription.

Match the format to your task

If you’re doing this…Use this NDC format…Then check this…
Pharmacy claim11-digit, no hyphens, for the dispensed packageIs it billed as pen / vial / KwikPen?
Prior authorization formPackage NDC for the exact dose and package prescribedDoes the plan require a specific package?
Copay / savings cardPackage NDC for what’s dispensedCard eligibility and plan type
HSA / FSA reimbursementPackage NDC from the receipt or boxItemized receipt shows the NDC
Insurance coverage call11-digit NDCPA? Quantity limit? Preferred package?
See a code that doesn’t match your package? Tell us the brand, dose, package type, and where you saw it, and we’ll re-check it. Keeping this page accurate is the whole point.

What’s changing with GLP-1 NDCs?

GLP-1 NDC lists go stale fast — new package types, new presentations, retired codes, and future-listed entries all show up over time. That’s why this page separates current packages from older and future-listed ones and carries a “last verified” date. A code that was right last year may not be the current package today.

More package types means one-code answers are incomplete.

Wegovy alone now spans pens, a high-dose pen, and tablets. Zepbound and Mounjaro each span pens, vials, multidose vials, and KwikPens. “What’s the NDC for [brand]?” almost always needs a dose and a package now.

NDCs are moving to 12 digits — but not yet, and not for billing.

The FDA published a final rule on March 5, 2026 that switches FDA-assigned NDCs to a uniform 12-digit “6-4-2” format. It takes effect March 7, 2033; until then, the FDA keeps assigning 10-digit codes, and the rule does not change the HIPAA 11-digit format used for reimbursement. We’ll update this page before that transition.

Not sure whether brand-name, insurance, or cash-pay GLP-1 care fits your situation? Take our free 60-second matching quiz and get a personalized action plan.

How we verified these NDC numbers

We checked package NDCs against DailyMed labels, the FDA NDC Directory, FDA Structured Product Labels, and the manufacturers’ published package lists, then converted the 10-digit codes to the 11-digit “5-4-2” billing format using FDA and CMS guidance.

Our source hierarchy, in order:

  1. DailyMed and FDA Structured Product Labels — for package-level NDCs by dose and presentation
  2. FDA NDC Directory — for what an NDC means, and to confirm a code is active
  3. CMS / ResDAC NDC-format guidance — for the 11-digit billing conversion
  4. Manufacturer labeling and published package lists (Novo Nordisk, Eli Lilly) — to confirm presentations and strengths
  5. Your pharmacy or payer — for your plan’s specifics only, not for general NDC truth

Before you submit anything, run this checklist:

  • Confirm the brand
  • Confirm the dose
  • Confirm the package type
  • Confirm the package in the pharmacy’s system
  • Convert to the 11-digit billing format
  • Ask whether a rejection is NDC-specific or coverage-specific
  • Save a reference number or screenshot if the insurer confirms coverage

Frequently asked questions about GLP-1 NDC numbers

Most GLP-1 NDC confusion comes from using a brand name when the pharmacy or insurer needs an exact package code. Match the brand, dose, package type, and billing format before you submit, and verify against the box.

What is the NDC for Wegovy 2.4 mg?

The Wegovy 2.4 mg single-dose pen carton is listed as 0169-4524-14, which becomes 00169-4524-14 in 11-digit billing format and 00169452414 with no hyphens. Confirm the dispensed package is the Wegovy 2.4 mg pen before using it.

What is the NDC for Zepbound 5 mg?

Zepbound 5 mg has more than one NDC depending on package. The 5 mg single-dose pen is 0002-2495-80; the 5 mg vial, multidose vial, and KwikPen each carry different codes. Match the package type on the box before billing.

What is the NDC for Ozempic 1 mg?

The current Ozempic 1 mg dose pen (4 mg/3 mL) is listed as 0169-4130-13, which converts to 00169-4130-13 or 00169413013 with no hyphens. Confirm it is active in the FDA NDC Directory, since Ozempic has older codes still in circulation.

What is the NDC for Mounjaro 5 mg?

Mounjaro 5 mg depends on package too. The 5 mg single-dose pen is listed as 0002-1495-80 and the 5 mg single-dose vial as 0002-1243-01, with other package formats carrying separate codes. Confirm the exact package being dispensed.

Are NDC numbers the same for pens and vials?

No. Pens, vials, multidose vials, tablets, and KwikPens can each have a different NDC, even when the brand and dose look identical. The package determines the code.

Is the 11-digit NDC the same as the 10-digit NDC?

It points to the same package when converted correctly, but the formatting differs. Labels often show 10 digits while pharmacy and insurance systems use the 11-digit 5-4-2 format, created by adding a leading zero.

Does the NDC prove my insurance will cover the medication?

No. The FDA says a code being listed does not determine reimbursement eligibility. Coverage depends on your plan's formulary, prior-authorization rules, and quantity limits.

Can I use an Ozempic NDC for Wegovy, or a Mounjaro NDC for Zepbound?

No. Use the NDC for the exact brand and package being dispensed. Same molecule does not mean same code.

Where is the NDC on the box?

It is printed on the medication carton or package labeling. If you do not have the box, ask the pharmacy for the exact NDC they are billing.

Why did my copay card fail even with the right NDC?

It is usually eligibility, plan type, package type, quantity limit, refill timing, or diagnosis — not the code itself. Ask the pharmacy for the exact rejection reason instead of assuming the NDC is wrong.

Are NDC numbers changing to 12 digits?

Yes, eventually. The FDA finalized a rule moving FDA-assigned NDCs to a 12-digit format effective March 7, 2033. Until then, 10-digit NDCs continue, and the 11-digit billing format used for claims does not change.

Related guides

The RX Index is a pricing intelligence and comparison resource for GLP-1 telehealth providers. This page is an NDC lookup and billing-format reference, not medical, prescribing, billing, or coverage advice. NDCs were cross-checked against DailyMed, the FDA NDC Directory, and manufacturer labeling on June 15, 2026; always confirm the code on the dispensed package before submitting a claim.

Sources used: FDA — National Drug Code Directory (fda.gov); FDA — National Drug Code Format final rule (fda.gov); DailyMed labels and FDA Structured Product Labels for Wegovy, Zepbound, Ozempic, and Mounjaro (dailymed.nlm.nih.gov); Eli Lilly published package/price listings (lilly.com); CMS / ResDAC NDC-format guidance (resdac.org).