HCPCS code A9553 — Cr51 chromate.
Status: Active.
Effective Jan 1, 2026.
Source: CMS HCPCS Level II.
A9553
ActiveCr51 chromate
Chromium cr-51 sodium chromate, diagnostic, per study dose, up to 250 microcuries
Category:
Transportation & Supplies
Section:
A-codes: Transportation, Medical & Surgical Supplies
Effective:
Jan 1, 2026
Code type:
alphanumeric
OPPS Status:
K
— Non-pass-through drugs and biologicals
OPPS APC:
0862
MUE — Medically Unlikely Edits
Maximum units of A9553 Medicare will pay for one beneficiary on one date of service. Claims exceeding the MUE are denied or returned for review.
| Service Type | Max Units / Day |
|---|---|
| Outpatient Hospital | 1 |
| Practitioner Services | 1 |
Source: CMS Medicare NCCI Medically Unlikely Edits
Change History
Quarterly changes published by CMS. Revisions may affect the code description, coverage, or rate — review each quarter's changes before submitting claims.
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New Code 2026-Q1Cr51 chromate