Drugs administered other than oral method
J1551 — Injection, immune globulin (cutaquig), 100 mg
HCPCS code J1551 is used on U.S. medical bills for drugs administered other than oral method: Injection, immune globulin (cutaquig), 100 mg.
- Typical setting: Outpatient or facility
- National avg charge (illustrative): ASP-based pricing for Medicare; payer-specific commercial rates.
- Most-disputed reason: Wasted-drug units billed without JW modifier
What it means
What J1551 actually means
Injection, immune globulin (cutaquig), 100 mg.
The official CMS HCPCS Level II descriptor for this code is shown above. If the description on your bill does not match the service you actually received, that is a reason to ask for the itemized bill and dispute the line.
Common errors with this code
What goes wrong on real bills.
Most bills that look correct still contain at least one of these issues. Up to 49% of medical bills contain errors (CFPB).
- Quantity or units of service that exceed what the medical record supports.
- Duplicate billing on the same date of service.
- Missing or incorrect modifier (e.g., JW for drug waste, RT/LT for sides).
- Wasted-drug units billed without JW modifier without supporting documentation.
If you see J1551 on your bill
Three steps before paying.
1. Get the itemized bill. If your statement only shows a summary, request the CPT-level itemized bill before paying. Generate the request language →
2. Cross-check against the EOB. Compare what your insurer's Explanation of Benefits says you owe versus what the hospital is asking. They disagree more often than people think. Read the bill-vs-EOB guide →
3. Run a free Bill Scan. Upload the bill (and EOB if you have it) and BillBusted will flag the most likely issues with this specific code in your specific state. Run free scan →
Related codes
Other codes in this category.
People who land on J1551 often also see these adjacent codes on the same bill.
Related BillBusted guides
Plain-English reads if you see J1551 on a bill.
J1551 FAQ
Plain-English answers.
What is J1551 used for on a medical bill?
HCPCS code J1551 is used on medical bills for drugs administered other than oral method: Injection, immune globulin (cutaquig), 100 mg. Up to 49% of medical bills contain at least one error (CFPB, 2023), and codes in this category most often get flagged for wasted-drug units billed without jw modifier. If you see J1551 on your bill, request the itemized statement and compare the units, date of service, and description to your Explanation of Benefits before paying.
How much should J1551 cost?
How much J1551 should cost depends on your payer and region. Up to 49% of medical bills contain at least one error (CFPB, 2023), and pricing for this HCPCS code is set by Medicare fee schedules for Medicare claims and by negotiated allowed amounts for commercial plans. Check the Medicare fee-schedule lookup tool, your insurer's member portal, or run a free BillBusted scan to compare your charge against typical allowed amounts.
Can I dispute a J1551 charge on my medical bill?
Yes, you can dispute a J1551 charge on your medical bill if the units, modifier, date of service, or coverage doesn't match the medical record or your insurance benefits. About 73.7% of patients who actually dispute a medical bill receive a correction (JAMA Health Forum, 2024). Request the itemized bill, compare to your EOB, and use BillBusted's Resolution Pack to draft the dispute letter if needed.
Don't pay J1551 blindly.
The free scan tells you in under 60 seconds whether this charge looks reasonable for your situation.