Billing and Coding: Hemophilia Factor Products

This article provides Medicare billing and coding guidance for hemophilia clotting factor products (not a coverage decision); do not bill Medicare for non‑covered services as covered and use the appropriate modifier for non‑covered items. Providers must translate administered dosages into the HCPCS‑specified units (IU, mg, or mcg) using the long code descriptors and submit the correct Quantity Billed, and must report discarded amounts from single‑dose/single‑use containers with the JW modifier per CMS CR4229.