A9559 – Cobalt co-57 cyanocobalamin, oral, diagnostic, per study dose, up to 1 microcurie

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

Active code Carrier judgment

HCPCS codeA9559
Long description
Cobalt co-57 cyanocobalamin, oral, diagnostic, per study dose, up to 1 microcurie
Short description
Co57 cyano
Pricing indicator
57 Other carrier priced
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
I1E Standard imaging - nuclear medicine
Added
January 1, 2006
Last change
January 1, 2006 – No change

Frequently asked questions

What is HCPCS code A9559?

A9559 is a HCPCS Level II code for cobalt co-57 cyanocobalamin, oral, diagnostic, per study dose, up to 1 microcurie.

Does Medicare cover A9559?

The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. 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.