A9546 – Cobalt co-57/58, cyanocobalamin, diagnostic, per study dose, up to 1 microcurie
HCPCS Level II code · A codes: Transportation, Medical & Surgical Supplies, Miscellaneous & Experimental
HCPCS codeA9546
- Long description
- Cobalt co-57/58, cyanocobalamin, diagnostic, per study dose, up to 1 microcurie
- Short description
- Co57/58
- Pricing indicator
53Statute- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
I1EStandard imaging - nuclear medicine- Added
- January 1, 2006
- Last change
- January 1, 2006 – No change
Frequently asked questions
What is HCPCS code A9546?
A9546 is a HCPCS Level II code for cobalt co-57/58, cyanocobalamin, diagnostic, per study dose, up to 1 microcurie.
Does Medicare cover A9546?
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
- A9538 – Technetium tc-99m pyrophosphate, diagnostic, per study dose, up to 25 millicuries
- A9539 – Technetium tc-99m pentetate, diagnostic, per study dose, up to 25 millicuries
- A9540 – Technetium tc-99m macroaggregated albumin, diagnostic, per study dose, up to 10 millicuries
- A9541 – Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries
- A9542 – Indium in-111 ibritumomab tiuxetan, diagnostic, per study dose, up to 5 millicuries
- A9543 – Yttrium y-90 ibritumomab tiuxetan, therapeutic, per treatment dose, up to 40 millicuries
- A9544 – Iodine i-131 tositumomab, diagnostic, per study dose
- A9545 – Iodine i-131 tositumomab, therapeutic, per treatment dose
- A9547 – Indium in-111 oxyquinoline, diagnostic, per 0.5 millicurie
- A9548 – Indium in-111 pentetate, diagnostic, per 0.5 millicurie
- A9550 – Technetium tc-99m sodium gluceptate, diagnostic, per study dose, up to 25 millicurie
- A9551 – Technetium tc-99m succimer, diagnostic, per study dose, up to 10 millicuries
- A9552 – Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries
- A9553 – Chromium cr-51 sodium chromate, diagnostic, per study dose, up to 250 microcuries
- A9554 – Iodine i-125 sodium iothalamate, diagnostic, per study dose, up to 10 microcuries
- A9555 – Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.