When to use CPT code for B12 injection Medical Coding Guide Medical Coding & Billing Report Sample Patient Name: John Doe Visit Date: 01 01 2025 CPT Code: 99213 (Office Visit) ICD 10 C How to Avoid D53.9, D51.x, and D64.9 in Macrocytic Anemia ICD 10 CM FY 2026 brings major changes to HIV coding. From clarifying when to use B20 vs. Z21 to new rules for pregnancy and treatment, these revisions reshape compliance and coding accuracy. Is