Does Procedure J3420 Require Prior Authorization? ICD 10 Diagnosis Codes ADS Healthcare Provider Hub 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! UB 04 Form Locator Appendices The HCPCS modifier FC stands for "Partial credit received for replaced device". It is used in facility billing, primarily for Medicare claims submitted by hospitals under the Outpatient Prospective Payment System (OPPS) Diagnostic Codes: ICD 10, ICD 11 & SNOMED CT Pabau