Yes, CPT code 96372 can be billed alone when the injection is the only service provided at the visit
The Grading of Recommendation, Assessment, Development, and Evaluation (GRADE) tool was used to assess the certainty of the evidence for the two primary biochemical outcomesserum vitamin B12 concentration increase and homocysteine reductionacross all included studies, and separately for randomised controlled trials (RCTs) and observational studies
Dosage and method of use of in cats and dogs: 0.25-0.3 ml
No obvious systemic adverse reactions were observed in tested animals even at a relatively high daily dose up to 60 mg/kg/d, confirming its promising safety profile and therapeutic efficacy for prospective ovarian cancer treatment
[1] [3] The injection bypasses the gastrointestinal tract entirely, making it particularly effective for patients with absorption problems such as pernicious anaemia or those who have undergone gastric surgery
(PubMed) Stevens VL, McCullough ML, Sun J, Gapstur SM