medicare cpt code for b12 injection 96372 Description in 2026 Decoding Reimbursement medicare cpt code for b12

TB500 for 4 to 8 weeks

Multiple injections of the same drug in a single encounter are reported as additional units of 96372 with modifier 76 (same provider) or 77 (different provider) Multiple injections of different drugs at the same visit are reported as additional units with modifier 59 for each distinct drug/site The MUE of 3 means Medicare will not reimburse more than 3 injection administration units per provider per patient per day without additional documentation

When this information is absent from Box 19 of the CMS-1500 or the 837P equivalent, the claim will be denied as incomplete

Concomitant deficiencies (iron, folate), chronic illness, or drug interactions may blunt clinical response and warrant further evaluation