A9544 — Iodine i-131 tositumomab, diagnostic, per study dose
A9544 is a HCPCS Level II code for iodine i-131 tositumomab, diagnostic, per study dose. It belongs to the Transportation, Medical & Surgical Supplies, Administrative section. It was terminated on December 31, 2016 and is not valid on new claims.
This code has been terminated
CMS terminated A9544 on December 31, 2016. It stays in the file as history — a claim you are auditing from before that date may legitimately carry it — but it must not appear on a new claim. The adjacent codes below are the usual place to look for its replacement.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
The CMS record for A9544
- Long descriptor
- Iodine i-131 tositumomab, diagnostic, per study dose
- Short descriptor
- I131 tositumomab, dx
- Added
- January 1, 2006
- Terminated
- December 31, 2016
- BETOS
- I1E
- Pricing indicator
- 57 — Other
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
When CMS retired it.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Other carrier priced.
Codes adjacent to A9544
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If A9544 is not quite right, the correct code is very often within a few positions of it.
- A9536Technetium tc-99m depreotide, diagnostic, per study dose, up to 35 millicuries
- A9537Technetium tc-99m mebrofenin, diagnostic, per study dose, up to 15 millicuries
- A9538Technetium tc-99m pyrophosphate, diagnostic, per study dose, up to 25 millicuries
- A9539Technetium tc-99m pentetate, diagnostic, per study dose, up to 25 millicuries
- A9540Technetium tc-99m macroaggregated albumin, diagnostic, per study dose, up to 10 millicuries
- A9541Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries
- A9542Indium in-111 ibritumomab tiuxetan, diagnostic, per study dose, up to 5 millicuries
- A9543Yttrium y-90 ibritumomab tiuxetan, therapeutic, per treatment dose, up to 40 millicuries
- A9545Iodine i-131 tositumomab, therapeutic, per treatment doseterminated
- A9546Cobalt co-57/58, cyanocobalamin, diagnostic, per study dose, up to 1 microcurie
- A9547Indium in-111 oxyquinoline, diagnostic, per 0.5 millicurie
- A9548Indium in-111 pentetate, diagnostic, per 0.5 millicurie
- A9550Technetium tc-99m sodium gluceptate, diagnostic, per study dose, up to 25 millicurie
- A9551Technetium tc-99m succimer, diagnostic, per study dose, up to 10 millicuries
- A9552Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries
- A9553Chromium cr-51 sodium chromate, diagnostic, per study dose, up to 250 microcuries
Questions about A9544
What is HCPCS code A9544?
A9544 is a HCPCS Level II code for iodine i-131 tositumomab, diagnostic, per study dose. It sits in the Transportation, Medical & Surgical Supplies, Administrative section.
Does Medicare cover A9544?
The CMS HCPCS file marks A9544 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
Is A9544 still valid?
No. A9544 was terminated on December 31, 2016 and should not be used on new claims.