A9555 HCPCS code: Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries
A9555 is the HCPCS Level II code for rubidium rb-82, diagnostic, per study dose, up to 60 millicuries. In 2024 Medicare paid an average of $419.82 per service for A9555 across 339,663 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. The NCCI unit limit is 2 per day on outpatient hospital claims. Medicare volume rose 33% from 2022 to 2024 (256,002 to 339,663 services). In 2024, about 2,036 clinicians billed Medicare for A9555 for 207,157 beneficiaries; California, Florida, Texas accounted for 50% of services.
Code details
| Field | Value |
|---|---|
| Section | A codes — Transportation, medical/surgical supplies and miscellaneous |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 99 |
| BETOS category | I1E |
| Added | 2006-01-01 |
| Last action effective | 2006-01-01 |
Who bills A9555 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 2,036 |
| Medicare beneficiaries | 207,157 |
| States with claims | 41 |
| Share of services in top 3 states (California, Florida, Texas) | 50% |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for A9555, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 256,002 | 158,109 | $527.20 | $420.78 |
| 2023 | 285,806 | 176,299 | $533.09 | $425.12 |
| 2024 | 339,663 | 207,157 | $526.63 | $419.82 |
States with the most A9555 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| California | 82,150 | $406.66 |
| Florida | 52,184 | $323.93 |
| Texas | 36,723 | $511.41 |
| Illinois | 29,416 | $545.62 |
| New York | 18,532 | $346.92 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 2 | Clinical: Data |
| practitioner claims | 2 | Clinical: Data |
Medicare policy articles for this code
- A56476: Billing and Coding: Cardiac Radionuclide Imaging (Palmetto GBA (MAC - Part A, MAC - Part B))
- A56476: Billing and Coding: Cardiac Radionuclide Imaging (Palmetto GBA (MAC - Part A, MAC - Part B))
Covered diagnoses (635 ICD-10-CM codes)
The diagnoses most often listed as covered in the policy articles above:
| ICD-10-CM | Diagnosis | Articles listing it |
|---|---|---|
| A18.84 | Tuberculosis of heart | 1 |
| C58 | Malignant neoplasm of placenta | 1 |
| C81.10 | Nodular sclerosis Hodgkin lymphoma, unspecified site | 1 |
| C81.11 | Nodular sclerosis Hodgkin lymphoma, lymph nodes of head, face, and neck | 1 |
| C81.12 | Nodular sclerosis Hodgkin lymphoma, intrathoracic lymph nodes | 1 |
| C81.13 | Nodular sclerosis Hodgkin lymphoma, intra-abdominal lymph nodes | 1 |
| C81.14 | Nodular sclerosis Hodgkin lymphoma, lymph nodes of axilla and upper limb | 1 |
| C81.15 | Nodular sclerosis Hodgkin lymphoma, lymph nodes of inguinal region and lower limb | 1 |
| C81.16 | Nodular sclerosis Hodgkin lymphoma, intrapelvic lymph nodes | 1 |
| C81.17 | Nodular sclerosis Hodgkin lymphoma, spleen | 1 |
Showing 10 of 635. The full list, non-covered diagnoses and CSV export are in Caduvo.
What changed for A9555
- 2006-01-01: A9555 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code A9555?
A9555 is the HCPCS Level II code for rubidium rb-82, diagnostic, per study dose, up to 60 millicuries. Short descriptor: "Rb82 rubidium".
How much does Medicare pay for A9555?
In 2024, the average Medicare payment was $419.82 per service (average allowed $526.63).
Does Medicare cover A9555?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Which diagnoses support coverage for A9555?
Medicare policy articles that cite A9555 list 635 covered ICD-10-CM diagnosis codes across 2 articles. The most cited include A18.84 (Tuberculosis of heart), C58 (Malignant neoplasm of placenta), C81.10 (Nodular sclerosis Hodgkin lymphoma, unspecified site). A listed diagnosis is necessary but not sufficient; the policy's other criteria still apply.
How many units of A9555 can be billed per day?
2 on outpatient hospital claims; 2 on practitioner claims (NCCI medically unlikely edits).
Related A95 codes
- A9500 — Technetium tc-99m sestamibi, diagnostic, per study dose
- A9501 — Technetium tc-99m teboroxime, diagnostic, per study dose
- A9502 — Technetium tc-99m tetrofosmin, diagnostic, per study dose
- A9503 — Technetium tc-99m medronate, diagnostic, per study dose, up to 30 millicuries
- A9504 — Technetium tc-99m apcitide, diagnostic, per study dose, up to 20 millicuries
- A9505 — Thallium tl-201 thallous chloride, diagnostic, per millicurie
- A9506 — Graphite crucible for preparation of technetium tc 99m-labeled carbon aerosol, one crucible
- A9507 — Indium in-111 capromab pendetide, diagnostic, per study dose, up to 10 millicuries
- A9508 — Iodine i-131 iobenguane sulfate, diagnostic, per 0.5 millicurie
- A9509 — Iodine i-123 sodium iodide, diagnostic, per millicurie
- A9510 — Technetium tc-99m disofenin, diagnostic, per study dose, up to 15 millicuries
- A9512 — Technetium tc-99m pertechnetate, diagnostic, per millicurie
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Next steps
- Run a reimbursement report for a device billed under A9555
- Watch A9555 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for A9555
Sources: CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.