C1606 HCPCS code: Adapter, single-use (i.e. disposable), for attaching ultrasound system to upper gastrointestinal endoscope
C1606 is the HCPCS Level II code for adapter, single-use (i.e. disposable), for attaching ultrasound system to upper gastrointestinal endoscope. In 2024 Medicare paid an average of $514.83 per service for C1606 across 18 services. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 1 per day on outpatient hospital claims. In 2024, about 5 clinicians billed Medicare for C1606 for 18 beneficiaries.
Code details
| Field | Value |
|---|---|
| Section | C codes — Outpatient PPS (hospital outpatient temporary codes) |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 53 |
| BETOS category | D1A — Medical/surgical supplies |
| Added | 2024-07-01 |
| Last action effective | 2024-07-01 |
Who bills C1606 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 5 |
| Medicare beneficiaries | 18 |
| States with claims | 1 |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for C1606, 2024–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2024 | 18 | 18 | $646.17 | $514.83 |
States with the most C1606 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| Texas | 12 | $509.60 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 1 | Code Descriptor / CPT Instruction |
| practitioner claims | 1 | Code Descriptor / CPT Instruction |
What changed for C1606
- 2024-07-01: C1606 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code C1606?
C1606 is the HCPCS Level II code for adapter, single-use (i.e. disposable), for attaching ultrasound system to upper gastrointestinal endoscope. Short descriptor: "Adapter, us to endoscope".
How much does Medicare pay for C1606?
In 2024, the average Medicare payment was $514.83 per service (average allowed $646.17).
Does Medicare cover C1606?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of C1606 can be billed per day?
1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).
Related C16 codes
- C1600 — Catheter, transluminal intravascular lesion preparation device, bladed, sheathed (insertable)
- C1601 — Endoscope, single-use (i.e. disposable), pulmonary, imaging/illumination device (insertable)
- C1602 — Orthopedic/device/drug matrix/absorbable bone void filler, antimicrobial-eluting (implantable)
- C1603 — Retrieval device, insertable, laser (used to retrieve intravascular inferior vena cava filter)
- C1604 — Graft, transmural transvenous arterial bypass (implantable), with all delivery system components
- C1605 — Pacemaker, leadless, dual chamber (right atrial and right ventricular implantable components), rate-responsive, including all necessary components for implantation
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under C1606
- Watch C1606 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for C1606
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.