J2941
J2941 – Injection, somatropin, 1 mg · NDC Crosswalk & Billing Units
HCPCS Level II J-code · Medicare Part B drug billing
J-code
● 30 NDCs crosswalked
📋 J2941 summary
J2941 is a HCPCS Level II J-code used to bill somatropin, 1 mg. The number of billing units to report depends on the dose administered and the NDC/package billed — use the calculator below.
Brand names associated with J2941: Zomacton, Norditropin, Omnitrope
⚠ An NDC↔HCPCS crosswalk and a published payment limit do not guarantee payer coverage or payment. Always verify the current payer policy and claim format before billing.
🗂️ Key billing facts
HCPCS codeJ2941
DescriptorInjection, somatropin, 1 mg
Billing unitNot available in current dataset
Payment limit / unit Not available in current dataset
Mapped NDCs30
Data periodNot available in current dataset
Last updatedSource date not available
💊 About Somatropin DRUG GUIDE
Somatropin treats conditions where the body does not make enough growth hormone.
In children, it is used for growth failure caused by growth hormone deficiency (GHD), Prader-Willi Syndrome, being born small for gestational age (SGA) without catching up by age 2, Turner Syndrome, idiopathic short stature (ISS — unexplained short stature with no other treatable cause), and SHOX gene deficiency.
Norditropin is also indicated for Noonan Syndrome in children.In adults, somatropin replaces growth hormone that the body is not producing enough of — whether the deficiency started in childhood or developed in adulthood due to pituitary or brain disease, surgery, radiation, or injury.
Clinical overview from our editorial drug guide for Somatropin. For billing reference, see the sections above.
🧾 Billing & reimbursement HCPCS · CMS
Medicare payment limit / unit
—
Est. ASP / unit
—
Est. after 2% sequester
—
HCPCS dosage
—
The CMS payment limit is the Medicare Part B drug allowance (ASP + 6%, statutory). After the 2% federal sequester the effective payment is ≈ ASP + 4.3%; estimated ASP = payment limit ÷ 1.06. Source: CMS Medicare Part B Payment Limit File (quarterly).
Full HCPCS code details (official CMS record)
Long descriptionInjection, somatropin, 1 mg
CoverageD — Special coverage instructions apply
Pricing indicator51 — Drug — priced under the ASP methodology
Type of service1 — Medical care
BETOS-2O1E
ASC payment groupYY
Action codeN — No maintenance this year
Effective date2023-01-01
Date added2002-01-01
Source: CMS HCPCS Level II code file (imported via admin).
🧮 Dosing & billing-units calculator HCPCS UNITS
One billing unit of J2941 = 1 unit. Enter a regimen to convert dose → billing units and project a full course.
Billing units = dose ÷ HCPCS unit size. Most payers require whole units — round per the payer's policy. “Est. Medicare pay” uses the current payment limit. For single-dose vials, drug discarded after administration may be separately billable with modifier JW (JZ when none is discarded) where allowed. Always verify payer-specific rounding before billing.
🔁 NDCs that bill under J2941 LEAST EXPENSIVE FIRST
30 NDCs map to J2941. Bill units = how many HCPCS units one package represents.
| NDC (11-digit) | Drug | Labeler | Package | Strength | Bill units | NADAC / unit | Status | Source |
|---|---|---|---|---|---|---|---|---|
| 00013-2649-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2649-02) /... | — | 0.2 | $30.899 | ● Active | PDAC |
| 00013-2650-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2650-02) /... | — | 0.4 | $61.640 | ● Active | PDAC |
| 00013-2651-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2651-02) /... | — | 0.6 | $93.050 | ● Active | PDAC |
| 55566-1801-01 | ZOMACTON somatropin KIT | Ferring | 1 KIT in 1 CARTON (55566-1801-1) * 1 INJ... | — | 5 | $278.604 | ● Active | PDAC |
| 00781-4004-36 | Omnitrope Somatropin KIT | Sandoz | 1 KIT in 1 CARTON (0781-4004-36) * 1 mL... | — | 5.8 | $326.117 | ● Active | PDAC |
| 00781-3001-07 | Omnitrope Somatropin 5 mg/1.5mL INJECTION, SOLUTION | Sandoz | 1 CARTRIDGE in 1 CARTON (0781-3001-07) /... | 5 mg/1.5mL | 3.333 | $430.363 | ● Active | PDAC |
| 55566-1901-01 | ZOMACTON somatropin KIT | Ferring | 1 KIT in 1 CARTON (55566-1901-1) * 1 INJ... | — | 10 | $556.824 | ● Active | PDAC |
| 00013-2626-81 | GENOTROPIN somatropin KIT | Pfizer | 1 CARTRIDGE in 1 CARTON (0013-2626-81) /... | — | 5.8 | $752.224 | ● Active | PDAC |
| 00013-2646-81 | GENOTROPIN somatropin KIT | Pfizer | 1 CARTRIDGE in 1 CARTON (0013-2646-81) /... | — | 13.8 | $1,810.400 | ● Active | PDAC |
| 00169-7703-21 | Norditropin somatropin 30 mg/3mL INJECTION, SOLUTION | Novo | 1 SYRINGE in 1 CARTON (0169-7703-21) / 3... | 30 mg/3mL | 10 | — | ● Active | PDAC |
| 00781-3001-26 | Omnitrope Somatropin 5 mg/1.5mL INJECTION, SOLUTION | Sandoz | 5 CARTRIDGE in 1 CARTON (0781-3001-26) /... | 5 mg/1.5mL | 3.333 | — | ● Active | PDAC |
| 00002-8147-01 | HUMATROPE Somatropin KIT | Eli | 1 TRAY in 1 CARTON (0002-8147-01) / 1 KIT... | — | 6 | — | ● Active | PDAC |
| 00002-8148-01 | HUMATROPE Somatropin KIT | Eli | 1 TRAY in 1 CARTON (0002-8148-01) / 1 KIT... | — | 12 | — | ● Active | PDAC |
| 00002-8149-01 | HUMATROPE Somatropin KIT | Eli | 1 TRAY in 1 CARTON (0002-8149-01) / 1 KIT... | — | 24 | — | ● Active | PDAC |
| 00013-2658-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2658-02) /... | — | 2 | — | ● Active | PDAC |
| 44087-0006-07 | Serostim somatropin KIT | EMD | 1 KIT in 1 CARTON (44087-0006-7) * 1 mL... | — | 6 | — | ● Active | PDAC |
| 44087-0005-07 | Serostim somatropin KIT | EMD | 1 KIT in 1 CARTON (44087-0005-7) * 1 mL... | — | 5 | — | ● Active | PDAC |
| 44087-0004-07 | Serostim somatropin KIT | EMD | 1 KIT in 1 CARTON (44087-0004-7) * 1 mL... | — | 4 | — | ● Active | PDAC |
| 00013-2657-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2657-02) /... | — | 1.8 | — | ● Active | PDAC |
| 00013-2656-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2656-02) /... | — | 1.6 | — | ● Active | PDAC |
| 00013-2655-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2655-02) /... | — | 1.4 | — | ● Active | PDAC |
| 00013-2654-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2654-02) /... | — | 1.2 | — | ● Active | PDAC |
| 00013-2653-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2653-02) /... | — | 1 | — | ● Active | PDAC |
| 00013-2652-02 | GENOTROPIN somatropin KIT | Pfizer | 7 CARTRIDGE in 1 CARTON (0013-2652-02) /... | — | 0.8 | — | ● Active | PDAC |
| 55566-1902-01 | ZOMACTON WITH VIAL ADAPTER (LYOPHILIZED) 10 MG | Unknown | — | — | 10 | — | — | PDAC |
| 44087-0016-01 | SAIZEN SAIZENPREP CARTRIDGE (W/DILUENT) 8.8 MG | Unknown | — | — | 8.8 | — | — | PDAC |
| 00002-7335-11 | HUMATROPE (WITH STERILE DILUENT) 5 MG | Unknown | — | — | 5 | — | — | PDAC |
| 44087-3388-07 | ZORBTIVE (MDV, VIALS W/ DILUENT) 8.8 MG | Unknown | — | — | 8.8 | — | — | PDAC |
| 44087-1005-02 | SAIZEN (VIAL, W/DILUENT) 5 MG | Unknown | — | — | 5 | — | — | PDAC |
| 44087-1088-01 | SAIZEN (VIAL W/DILUENT) 8.8 MG | Unknown | — | — | 8.8 | — | — | PDAC |
NDC→HCPCS mappings come from the CMS ASP NDC-HCPCS crosswalk; additional DME MAC / DMEPOS mappings come from PDAC and are labeled separately. NADAC from CMS (weekly). “Status” reflects the product's marketing / obsolete flag in the NDC directory. Presence or absence here does not determine Medicare coverage. Linked NDCs open the full product page.
🗺️ Medicare utilization & spend CMS · PART B
No reportable public Medicare utilization was found for J2941. This is expected for newer codes, low-volume drugs, or codes whose use is billed under another code. CMS also hides any figure covering fewer than 11 patients (a privacy rule), so small-volume use may exist but isn't publishable. Utilization and spend appear here automatically once CMS publishes reportable data for this code.
📊 What bills under J2941
J-codes are billing codes often used for drugs billed under the medical benefit. This connects the billing code to the NDC package records it covers, by ingredient and labeler.
NDC products by ingredient
NDC products by labeler
🗃️ Data sources & freshness
Every figure on this page is computed from public datasets. Here's what each section draws on and how current it is.
HCPCS code & descriptor
CMS HCPCS Level II code file
Loaded
Payment limit & billing unit
CMS Medicare Part B ASP Pricing File (quarterly)
Not available
NDC ↔ HCPCS crosswalk
CMS ASP NDC-HCPCS crosswalk + DMEPDAC (PDAC)
30 NDCs mapped
NADAC acquisition cost
CMS National Average Drug Acquisition Cost (weekly)
Available for mapped NDCs
Utilization & spend
CMS Part B Spending by Drug · PSPS · Physician & Other Practitioners
No reportable utilization
Figures are estimates for reference and may lag the source files. Always verify against the current CMS files and your payer's policy before submitting claims.
⚠️ Practical billing caveats
- A crosswalk is not coverage. An NDC mapping or a published payment limit does not guarantee a payer will cover or pay this code. Check the specific plan's policy.
- Units ≠ milligrams. Bill the number of HCPCS units (dose ÷ the code's unit size), not the milligram dose. Use the calculator above.
- Discarded drug. For single-dose vials, drug discarded after administration may be separately billable with modifier JW (and JZ when nothing is discarded) where the payer allows.
- Rounding & partial units. Many payers require whole units; round per the payer's policy, not automatically up.
- The code can cover more than this drug. Some HCPCS codes span multiple products or strengths — confirm the exact code for the product administered.
- Figures lag. ASP limits change quarterly and utilization data are released with a delay. Verify against the current CMS files before billing.
❓ J2941 billing FAQ
What is HCPCS code J2941?
J2941 is a HCPCS Level II J-code used to bill Injection, somatropin, 1 mg under Medicare Part B and most medical (not pharmacy) benefits.
Which NDCs bill under J2941?
30 NDCs currently map to J2941 in the CMS ASP NDC-HCPCS crosswalk. See the NDC crosswalk table above for each product, package, billing units and estimated reimbursement.
Does a crosswalk mean J2941 is covered?
No. An NDC-to-HCPCS crosswalk and a published payment limit do not guarantee coverage or payment. Coverage depends on the payer, the diagnosis and the site of care — always verify the current policy before billing.
For professional billing reference only — verify against the current CMS files before submitting claims.