A9541 HCPCS Level II code: Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries
A9541 is the HCPCS code for “Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
A9541Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries
Short description: Tc99m sulfur colloid
HCPCS · United States
Medicare details
The indicators CMS publishes with A9541 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Other carrier priced
- Type of service
- Diagnostic radiology
- BETOS category
- Standard imaging - nuclear medicine
- Added
- Jan 1, 2006
Where A9541 sits
- 1A codesAmbulance, supplies and miscellaneous
- 2Active code A9541Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries
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 A9541 mean?
A9541 is the HCPCS code for “Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover A9541?
CMS lists A9541’s Medicare coverage as “Carrier judgment” and its pricing as “Other carrier priced”. 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 A9541
All A codesA9532Iodine i-125 serum albumin, diagnostic, per 5 microcuriesA9536Technetium tc-99m depreotide, diagnostic, per study dose, up to 35 millicuriesA9537Technetium tc-99m mebrofenin, diagnostic, per study dose, up to 15 millicuriesA9538Technetium tc-99m pyrophosphate, diagnostic, per study dose, up to 25 millicuriesA9539Technetium tc-99m pentetate, diagnostic, per study dose, up to 25 millicuriesA9540Technetium tc-99m macroaggregated albumin, diagnostic, per study dose, up to 10 millicuriesA9542Indium in-111 ibritumomab tiuxetan, diagnostic, per study dose, up to 5 millicuriesA9543Yttrium y-90 ibritumomab tiuxetan, therapeutic, per treatment dose, up to 40 millicuriesA9544Iodine i-131 tositumomab, diagnostic, per study doseA9545Iodine i-131 tositumomab, therapeutic, per treatment doseA9546Cobalt co-57/58, cyanocobalamin, diagnostic, per study dose, up to 1 microcurieA9547Indium in-111 oxyquinoline, diagnostic, per 0.5 millicurie