Lets do my first B12 injection together This is something Ive been nervous about for a long time, but today I finally did itand it honestly wasnt bad at all. I used the Union Medico needle guide How to Give a B12 Injection: Step By Step Instructions How and When to Use & Understanding the CPT Code 96372 Approval Issues 96372 Done Right: Dodge Injection Denials AAPC Knowledge Center B 12 (Cyanocobalamin) Shot Therapy MedClub by Dr Jenn B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics