Coding Guidelines and Applications (HCPCS, ICD 10 PCS, and ICD 10 CM) Nurse Key Federal Register :: Medicare and Medicaid Programs; CY 2025 Payment Policies Under the Physician Fee Schedule and Other Changes to Part B Payment and Coverage Policies; Medicare Shared Savings Program Requirements; Medicare 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) D51 ICD 10 Code: Vitamin B12 deficiency anemia