HCPCS code C1768 – Graft cardiac support device

Key takeaways

HCPCS Code C1768 is the OPPS device category code for an implanted vascular graft, and its official CMS descriptor is Graft, vascular.

C1768 carries status indicator N in the October 2026 OPPS Addendum B, so Medicare packages the graft into the procedure payment.

Hospitals still report C1768 with the implanting CPT code, because CMS uses packaged device charges when it recalculates APC rates.

In an ambulatory surgical center, C1768 carries payment indicator N1, which also means a packaged item with no separate payment.

The diagnosis on the claim must support the procedure performed, such as end-stage renal disease for a dialysis access graft.

HCPCS Code C1768: Official descriptor and code definition

HCPCS Code C1768 is the Level II code hospitals use to report an implanted vascular graft on a Medicare outpatient claim. The official CMS descriptor is Graft, vascular, and the short descriptor reads the same. It belongs to the C-code series that CMS maintains for the Hospital Outpatient Prospective Payment System (OPPS).

The code describes the graft itself, not the surgery. A vascular graft is a synthetic or biological conduit that a surgeon sews in to bypass, replace, or connect blood vessels. The procedure that places it is reported separately with its own CPT code.

What procedures use C1768 and when to report it

Report C1768 when a vascular graft is implanted during a procedure performed as a hospital outpatient case. The most common outpatient example is dialysis access built with a nonautogenous arteriovenous graft, reported with CPT 36830.

• Dialysis access creation: A synthetic or biological graft connects an artery to a vein in the arm to create hemodialysis access.
• Dialysis access revision: An open revision that sews in a new segment of graft material also reports the graft.
• Other outpatient vascular repair: Any outpatient procedure that leaves a vascular graft in the patient reports C1768 alongside the procedure code.

Open aortic and most lower-extremity bypass operations, including aortobifemoral bypass, are usually inpatient cases. Inpatient claims do not carry C-codes, because the graft cost sits inside the MS-DRG payment. An autogenous graft, such as a patient’s own saphenous vein, is tissue rather than a device, so it is not reported with C1768.

C-code category and OPPS packaging for C1768

The C-code series holds more than transitional pass-through codes. It also carries new technology services, drugs, and device category codes whose pass-through period has ended. C1768 is in that last group.

Transitional pass-through payment for devices is governed by 42 CFR 419.66. It limits a device category to at least two and no more than three years of separate payment. C1768 was one of the original device category codes, and its pass-through period ended long ago. Since then Medicare has packaged the graft into the payment for the procedure that implants it.

Packaging does not make the code optional. CMS uses the device charges on outpatient claims when it recalculates APC payment rates. A missing C1768 line understates the procedure’s cost in future years. Check the current OPPS Addendum B each quarter, because CMS can change status indicators with any update.

C1768 vs related HCPCS device codes

Nearby C-codes cover other implanted or insertable devices, and several of them are used in the same vascular procedures. Code from the implant log rather than the procedure name. Every descriptor below is taken from the October 2026 CMS HCPCS file.

Documentation requirements for C1768 claims

Because C1768 is packaged, documentation matters less for the line payment and more for the procedure it supports. The record should show which graft was implanted, why, and during which procedure. Strong billing compliance requirements start with a consistent checklist.

• Operative report: Names the graft by manufacturer and product, gives its size and material, and states where it was placed.
• Implant log or device sticker: Records the lot or serial number for the unit implanted, which supports both the claim and device tracking.
• Procedure CPT code: Appears on the same claim, because C1768 never stands alone.
• Diagnosis code: Supports medical necessity for the procedure, not for the graft as a product.
• Revenue code: Most hospitals report implanted grafts under revenue code 0278, other implants; confirm the mapping in your chargemaster.

Diagnosis coding for C1768: Follow the procedure

No diagnosis list is tied to C1768 itself. Medical necessity is judged on the procedure that implants the graft, so the supporting ICD-10-CM diagnosis must back that procedure. For a dialysis access graft, the record usually documents end-stage renal disease (N18.6) or chronic kidney disease, stage 5 (N18.5).

If a local coverage determination applies, it attaches to the procedure code, so check the procedure against your MAC’s policies.

Common reasons C1768 lines are rejected or denied

Most C1768 problems come from setting and claim-type errors, not from the code itself. A packaged line that pays $0 is working as designed, so it is not a denial to appeal. Structured denial management in healthcare starts with separating the two.

The device edit comes from section 61.2 of chapter 4 of the Medicare Claims Processing Manual, in force since January 1, 2017. A pre-submission check on setting, claim type, and device codes prevents most of these problems. Submitting a clean claim from the outset is faster than reworking a returned one.

Billing C1768 in different care settings

Which claim carries C1768 depends on who bills the facility side of the procedure. The grid below maps each care setting to its claim and its payment.

• Hospital outpatient department: The main setting. Report C1768 on the institutional claim with type of bill 013X, alongside the procedure CPT code.
• Ambulatory surgical center: C1768 carries payment indicator N1, so the ASC can report it but receives no separate payment for it.
• Inpatient hospital: Graft costs are bundled into the MS-DRG payment, and inpatient claims do not carry C-codes.
• Physician practice: A practice billing the surgeon’s professional service on a CMS-1500 or 837P does not report C1768.

Under revenue cycle management, the split matters. The hospital bills the facility side with the graft, and the surgeon’s practice bills only the professional side.

How claims management software supports the surgeon’s side of C1768 cases

C1768 sits on the hospital’s claim, but the surgeon’s practice still bills the professional side of the same procedure. That claim depends on the operative note, the diagnosis, and the patient’s insurance details being right and in one place.

Pabau, the practice management platform we build, keeps patient records, treatment notes, and insurance details together. Its claims management workflows build a claim from data already on the patient record. For US practices, Pabau then submits the claim through Claim.MD and tracks its status through to payment.

Your billing team sees which claims are pending, paid, or in error without chasing each payer separately. That leaves more time to answer a hospital coder’s query about the operative note before either claim goes out.

Submit and track surgical claims in one place

Pabau builds claims from the data on each patient record, submits them through Claim.MD for US practices, and tracks every claim to payment.

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Conclusion

Treat C1768 as a reporting obligation rather than a revenue line. Medicare packages the graft, so the value of getting it right shows up in future APC rates and in claims that are not returned. Code it from the implant log, keep it on the outpatient claim, and let the diagnosis support the procedure.

The trade-off is a little extra coding work on a line that pays $0. In return, the hospital gets accurate cost data in future APC rates and fewer claims returned by the device edit. Book a demo to see how Pabau helps your practice submit and track the surgeon’s claims for these procedures.

Continue your research

Need to understand how clearinghouse edits affect device claims? Denial management in healthcare covers the full appeal and prevention workflow for outpatient billing teams.

Want to see how clean-claim requirements apply to institutional submissions? Submitting a clean claim explains the elements payers validate before adjudication.

Looking for a broader overview of outpatient billing compliance? Billing compliance requirements walks through documentation, coding accuracy, and payer-specific rules.

Revising an existing dialysis access? CPT code 36832 covers open revision of an AV fistula or graft and how it is billed.

Closing the arterial access site as well? HCPCS code C1760 explains when a vascular closure device takes its own C-code line.

Frequently asked questions