A4771 – Serum clotting time tube, for dialysis, per 50

HCPCS Level II code · A codes: Transportation, Medical & Surgical Supplies, Miscellaneous & Experimental

Active code Special coverage instructions apply

HCPCS codeA4771
Long description
Serum clotting time tube, for dialysis, per 50
Short description
Serum clotting time tube
Pricing indicator
00 Not separately priced by Part B (bundled, not covered or Part A only)
Medicare coverage
D Special coverage instructions apply
BETOS category
P9B Dialysis services (Non-Medicare fee schedule)
Added
January 1, 1986
Last change
January 1, 2015 – No change

Frequently asked questions

What is HCPCS code A4771?

A4771 is a HCPCS Level II code for serum clotting time tube, for dialysis, per 50.

Does Medicare cover A4771?

The HCPCS file lists coverage code D: Special coverage instructions apply. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby A codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.