C2644 HCPCS code: Brachytherapy source, cesium-131 chloride solution, per millicurie
C2644 is the HCPCS Level II code for brachytherapy source, cesium-131 chloride solution, per millicurie. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 500 per day on practitioner claims.
Code details
| Field | Value |
|---|---|
| Section | C codes — Outpatient PPS (hospital outpatient temporary codes) |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 53 |
| BETOS category | I4B |
| Added | 2014-07-01 |
| Last action effective | 2019-01-01 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| practitioner claims | 500 | Prescribing Information |
What changed for C2644
- 2014-07-01: C2644 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 C2644?
C2644 is the HCPCS Level II code for brachytherapy source, cesium-131 chloride solution, per millicurie. Short descriptor: "Brachytx cesium-131 chloride".
Does Medicare cover C2644?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of C2644 can be billed per day?
500 on practitioner claims (NCCI medically unlikely edits).
Related C26 codes
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- C2614 — Probe, percutaneous lumbar discectomy
- C2615 — Sealant, pulmonary, liquid
- C2616 — Brachytherapy source, non-stranded, yttrium-90, per source
- C2617 — Stent, non-coronary, temporary, without delivery system
- C2618 — Probe/needle, cryoablation
- C2619 — Pacemaker, dual chamber, non rate-responsive (implantable)
- C2620 — Pacemaker, single chamber, non rate-responsive (implantable)
- C2621 — Pacemaker, other than single or dual chamber (implantable)
- C2622 — Prosthesis, penile, non-inflatable
- C2623 — Catheter, transluminal angioplasty, drug-coated, non-laser
- C2624 — Implantable wireless pulmonary artery pressure sensor with delivery catheter, including all system components
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Next steps
- Run a reimbursement report for a device billed under C2644
- Watch C2644 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for C2644
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.