HCPCS code C1891 – Non-programmable implantable infusion pump

Key takeaways

HCPCS Code C1891 reports a permanent, non-programmable implantable infusion pump. It covers the pump device only, not the implantation, catheter, or drug.

Programmability and permanence decide the code. A programmable pump is C1772, and a temporary non-programmable pump is C2626.

C1891 is a facility code for hospital outpatient claims on the UB-04. The physician bills the implantation CPT code on a separate professional claim.

C1891 began as an OPPS pass-through device category. The pump cost is now generally packaged, so check the current status indicator in Addendum B.

The operative report and device label should name the pump’s manufacturer and model, because that record proves the pump is non-programmable at audit.

HCPCS Code C1891: Definition and official descriptor

HCPCS Code C1891 is defined in the Level II code set as “Infusion pump, non-programmable, permanent (implantable).” The Centers for Medicare and Medicaid Services (CMS) maintains it for hospital outpatient reporting under the Outpatient Prospective Payment System (OPPS).

A non-programmable implantable pump sits in a pocket under the skin, usually in the abdomen. Most models use a propellant chamber that pushes drug from the reservoir through a catheter at a constant, preset flow rate.

Common uses include intrathecal therapy for chronic pain or spasticity and hepatic arterial chemotherapy for liver tumors. Because the rate can’t be reprogrammed, the clinician changes the dose by refilling the reservoir with a different drug concentration.

C-codes are facility-only, so C1891 goes on the hospital’s claim and never on a physician’s CMS-1500. Confirm the current descriptor on the CMS HCPCS Level II page each year, since CMS can revise descriptors in its quarterly updates.

C1891 vs C1772 vs C2626: Choosing the right pump code

Two questions settle which implantable pump code applies. Can a clinician change the flow rate with an external programmer after implantation? Is the pump intended to stay in the body?

If the rate can be reprogrammed, report C1772, whatever the intended duration. If the rate is fixed and the pump is permanent, report C1891. A fixed-rate pump intended for temporary use is C2626.

Take both answers from the device record rather than from memory. The pump’s FDA labeling and model number show whether it is programmable and whether it is meant for permanent implantation.

The implantation code has to match the pump too. A non-programmable spinal pump is implanted under CPT 62361, while CPT 62362 describes a programmable pump. A C1891 line next to CPT 62362 tells the payer the two codes disagree.

One more code describes a similar device. E0782 covers a non-programmable implantable pump under the DMEPOS benefit, bundled with its catheter and connectors. A hospital outpatient department reports C1891 on its facility claim instead.

What HCPCS Code C1891 covers, and the CPT codes billed with it

C1891 covers the pump device only. The implantation procedure, catheter, drug, and refill visits each need their own code. Report one unit of C1891 for each pump implanted.

Those codes land on three different claims, and only the facility claim carries C1891.

Companion CPT codes submitted alongside C1891

Bill the drug in the pump separately with its J-code, for example J0475 for baclofen. A drug cost folded into the C1891 device line is a common audit trigger.

OPPS payment and pass-through status for C1891

C1891 is one of the device categories CMS created for OPPS transitional pass-through payment. Pass-through status lasts only a few years. For a category this long established, the pump cost is generally packaged into the procedure’s Ambulatory Payment Classification (APC) rate.

A packaged code still belongs on the claim. CMS uses device C-codes on claims to set future APC rates. Procedures that CMS designates as device-intensive also need a device code on the claim, or the claim can be returned.

Check the status indicator and APC for both C1891 and the paired CPT code in the CMS quarterly OPPS addenda for the date of service. Commercial and Medicare Advantage payers set their own rates and may pay the device separately under contract.

Report C1891 under revenue code 0278 (other implants) unless the payer names another revenue center. A pump replaced free or at a credit from the manufacturer needs value code FD on the Medicare claim. Add the matching condition code, such as 49 or 50.

Medicare coverage criteria for implantable infusion pumps

Medicare covers implantable infusion pumps for the indications listed in National Coverage Determination (NCD) 280.14. Coverage isn’t automatic, so the record has to show the patient fits one of them.

• Intra-arterial chemotherapy: for primary liver cancer, or colorectal cancer that has spread only to the liver, when the tumor can’t be removed surgically.
• Intrathecal or epidural opioids: for severe chronic pain that hasn’t responded to less invasive therapy, after a successful preliminary trial.
• Intrathecal baclofen: for severe spasticity that oral baclofen hasn’t controlled, after a positive response to a trial dose.
• Other drugs: where the drug is reasonable and necessary, needs an implanted pump to be given, and the pump is FDA-approved for it.

Medicare Advantage and commercial plans may apply stricter criteria than traditional Medicare. Check each plan’s requirements before the implant is scheduled.

Prior authorization and the documentation payers expect

Traditional Medicare does not usually require prior authorization for C1891, but the claim can face post-payment review against the NCD. Most Medicare Advantage and commercial plans require authorization before implantation.

Every item below should be in the patient record before the claim goes out:

• Operative report: names the pump’s manufacturer, model, and serial number, and states that it is non-programmable and permanent.
• Device label or invoice: the unique device identifier (UDI) sticker from the packaging, attached to the operative record and matching the units billed.
• FDA labeling: a copy of the labeling or instructions for use that shows the fixed flow rate and permanent use.
• Trial results: for a spinal pump, the date, drug, dose, and documented response from the screening trial.
• Diagnosis codes: ICD-10-CM codes that match a covered indication in NCD 280.14 or the payer’s own policy.
• Authorization: the authorization number on the claim and the approval letter in the record, where the payer requires one.

Strong medical billing compliance starts with these items captured at the point of care. Rebuilding them after an auditor asks often ends in a partial or full recoupment.

Common C1891 claim denials and how to avoid them

Most C1891 denials come from a coding mismatch or a missing record. When a claim does come back, this guide to medical billing denial codes explains what the payer’s reason code means.

• Wrong pump code: C1891 reported for a programmable pump, or C1772 for a fixed-rate one. Fix: confirm programmability from the model number and FDA labeling before coding.
• Temporary pump coded as permanent: a short-term fixed-rate pump reported as C1891. Fix: report C2626 when the labeling describes temporary use.
• Mismatched procedure code: C1891 paired with CPT 62362, the programmable pump implant code. Fix: pair a non-programmable spinal pump with CPT 62361.
• Missing authorization: no approval on file from a Medicare Advantage or commercial plan. Fix: verify each plan’s requirements before the surgery is booked.
• Wrong claim type or setting: C1891 on a CMS-1500, or billed separately on an inpatient stay. Fix: report it only on the hospital outpatient facility claim.
• Drug folded into the device line: drug cost included in the C1891 charge. Fix: bill the drug with its own J-code.

Each of these checks takes minutes at charge capture. Working the same error as a denial takes an appeal cycle on a high-value device line.

How Pabau helps facilities keep C1891 claims clean

Facilities billing HCPCS Code C1891 need the device record, procedure code, and authorization on file before the claim goes out. Pabau, the practice management platform we build, includes claims management software that keeps those pieces on one claim.

Pabau’s digital forms capture the operative note, pump model, device label, and trial results in a consistent format, tied to the patient record. If a payer audits the claim, the records are already in one place.

Pabau’s reporting also shows denial trends over time. A monthly review tells you whether pump-code mismatches are falling, and which workflow step to fix if they aren’t.

Reduce claim denials on device codes

Pabau’s claims management tools support accurate charge capture, revenue code pairing, and audit-ready documentation for outpatient billing teams.

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Conclusion

Most C1891 problems start before the claim exists. Move the pump-code decision into surgical scheduling, where the device record, FDA labeling, and authorization can be checked against the planned procedure.

Once the patient has gone home, a wrong pump code or a missing label is much harder to fix. A few minutes of front-end checking costs less than a single appeal on a device line.

Book a demo to see how Pabau keeps implant records, authorizations, and claims in one place for your billing team.

Continue your research

Need to understand how denials are tracked and reversed? Denial management in healthcare covers the end-to-end workflow for identifying, appealing, and preventing claim denials across billing teams.

Unsure whether your billing process meets payer audit standards? Medical billing compliance outlines the documentation and procedural standards that reduce audit exposure.

Looking for a broader overview of the billing process? What is medical billing explains the full claim lifecycle from charge capture to remittance posting.

Implanting a device with no specific C-code? HCPCS code C1889 explains when the not-otherwise-classified device code applies on an outpatient claim.

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