C2644 HCPCS Level II code: Brachytherapy source, cesium-131 chloride solution, per millicurie
C2644 is the HCPCS code for “Brachytherapy source, cesium-131 chloride solution, per millicurie” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
C2644Brachytherapy source, cesium-131 chloride solution, per millicurie
Short description: Brachytx cesium-131 chloride
HCPCS · United States
Medicare details
The indicators CMS publishes with C2644 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Special coverage instructions apply
- Medicare pricing
- Statute
- Type of service
- Therapeutic radiology; Ambulatory surgical center (facility usage for surgical services)
- BETOS category
- Imaging/procedure - other
- Coverage statute
- 1833(t)
- Added
- Jul 1, 2014
Where C2644 sits
- 1C codesOutpatient prospective payment system
- 2Active code C2644Brachytherapy source, cesium-131 chloride solution, per millicurie
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 C2644 mean?
C2644 is the HCPCS code for “Brachytherapy source, cesium-131 chloride solution, per millicurie” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover C2644?
CMS lists C2644’s Medicare coverage as “Special coverage instructions apply” and its pricing as “Statute”. 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 C2644
All C codesC2638Brachytherapy source, stranded, iodine-125, per sourceC2639Brachytherapy source, non-stranded, iodine-125, per sourceC2640Brachytherapy source, stranded, palladium-103, per sourceC2641Brachytherapy source, non-stranded, palladium-103, per sourceC2642Brachytherapy source, stranded, cesium-131, per sourceC2643Brachytherapy source, non-stranded, cesium-131, per sourceC2645Brachytherapy planar source, palladium-103, per square millimeterC2698Brachytherapy source, stranded, not otherwise specified, per sourceC2699Brachytherapy source, non-stranded, not otherwise specified, per sourceC5271Application of low cost skin substitute graft to trunk, arms, legs, total wound surface area up to 100 sq cm; first 25 sq cm or less wound surface areaC5272Application of low cost skin substitute graft to trunk, arms, legs, total wound surface area up to 100 sq cm; each additional 25 sq cm wound surface area, or part thereof (list…C5273Application of low cost skin substitute graft to trunk, arms, legs, total wound surface area greater than or equal to 100 sq cm; first 100 sq cm wound surface area, or 1% of body…