HCPCS Level II › C codes C2644 Brachytx cesium-131 chlorideBrachytherapy source, cesium-131 chloride solution, per millicurie
Medicare coverage: Special coverage instructions apply Status: active (October 2026 file) Medically Unlikely Edits (effective October 1, 2026) Practitioner: max 500 units per claim line, rationale: Prescribing Information Outpatient hospital: max 0 units per day (clinical), rationale: CMS Policy Payer policies and prior authorization for C2644 Payer coverage policies that name C2644 C2644 appears in 1 coverage policy from BlueCross BlueShield of South Carolina.
Payer Policy Role in policy Reviewed Document BlueCross BlueShield of South Carolina Intracavitary Balloon Catheter Brain Brachytherapy for Malignant Gliomas or Metastasis to the Brain (CAM 80145) listed, no stance Sep 1, 2026 payer document
Medicaid fee-for-service AZ: $84.07 (outpatient_hospital), effective Oct 1, 2018 IN: $0.00 (professional, Advanced Practice Nurse (85%), non-facility), effective Sep 21, 2018 KY: $0.00 (asc), effective Jan 1, 2026 MS: $86.48 (comprehensive), effective Jul 1, 2020 ND: $0.00 (physician), effective Aug 1, 2026 VT: $0.00 (outpatient_hospital_opps), effective Feb 1, 2026 WY: $0.00 (outpatient_hospital_apc, Children's Hospitals), effective Apr 1, 2026 From payers' published prior-auth lists, coverage policies and state Medicaid fee schedules, updated Oct 16, 2026. The role is what the policy's own code table or text says about the code. Not a guarantee of coverage or payment; verify with the payer. CPT® is a registered trademark of the American Medical Association.