B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Medical coding for pain management involves specialized CPT codes (6232064636) for procedures like epidural steroid injections, joint injections, and neurolytic destructions, alongside ICD 10 CM codes for specific pain diagnosis and acuity. Key, up to B12 Injection sites + How to use B12 Shots Safely When to use CPT code for B12 injection Medical Coding Guide