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 Practice Management for Photobiomodulation of the Retina Retinal Physician Mental Health Billing Codes 2026: Complete CPT & ICD 10 Guide Diagnostic Codes: ICD 10, ICD 11 & SNOMED CT Pabau 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!