Access and Billing Codes HIZENTRA Immune Globulin Subcutaneous (Human) 20% Liquid In medical coding, HCPCS Modifier JB is an informational modifier indicating a drug was administered subcutaneously (under the skin) when the HCPCS code allows for multiple administration routes, like intravenous (IV) or Important Update for Medi Cal Rx Providers Starting in mid 2026, ICD 10 diagnosis codes will be required for all pharmacy claims. To help facilitate a smooth transition, we need to hear from you! Practice Management for Photobiomodulation of the Retina Retinal Physician