A4771 HCPCS Level II code: Serum clotting time tube, for dialysis, per 50
A4771 is the HCPCS code for “Serum clotting time tube, for dialysis, per 50” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
A4771Serum clotting time tube, for dialysis, per 50
Short description: Serum clotting time tube
HCPCS · United States
Notes for A4771
As CMS prints them, with any note A4771 takes from the headings above it.
Note
- CMS processing note 0017: SEE INTERMEDIARY MANUAL SECTION 3170.5 FOR COVERAGE INSTRUCTIONS PERTAINING TO E1510-E1600, E1620, E1630-E1699, A4650-A4663, A4690, A4712, A4730-A4870, A4890-A4927.
Medicare details
The indicators CMS publishes with A4771 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Special coverage instructions apply
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- ESRD supplies
- BETOS category
- Dialysis services (Non-Medicare fee schedule)
- Added
- Jan 1, 1986
Where A4771 sits
- 1A codesAmbulance, supplies and miscellaneous
- 2Active code A4771Serum clotting time tube, for dialysis, per 50
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code A4771 mean?
A4771 is the HCPCS code for “Serum clotting time tube, for dialysis, per 50” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover A4771?
CMS lists A4771’s Medicare coverage as “Special coverage instructions apply” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside A4771
All A codesA4750Blood tubing, arterial or venous, for hemodialysis, eachA4755Blood tubing, arterial and venous combined, for hemodialysis, eachA4760Dialysate solution test kit, for peritoneal dialysis, any type, eachA4765Dialysate concentrate, powder, additive for peritoneal dialysis, per packetA4766Dialysate concentrate, solution, additive for peritoneal dialysis, per 10 mlA4770Blood collection tube, vacuum, for dialysis, per 50A4772Blood glucose test strips, for dialysis, per 50A4773Occult blood test strips, for dialysis, per 50A4774Ammonia test strips, for dialysis, per 50A4802Protamine sulfate, for hemodialysis, per 50 mgA4860Disposable catheter tips for peritoneal dialysis, per 10A4870Plumbing and/or electrical work for home hemodialysis equipment