Medicare_Claims_Processing_Manual / Chapter_14 / 40.2-100-4-14

Why This Topic Matters

ASC facility payment depends on geographic wage adjustment, so understanding this manual section helps claims staff and coders interpret how the final Medicare payment amount is derived for ASC services and why payment can vary by location.

Article Sections

1. 40.2 - Carrier Adjustment of Base Payment Rates

   Overview of how carriers adjust ASC facility base payment rates to account for geographic wage variation and related payment components. Covers the general payment adjustment framework used in Medicare claims processing.

2. Carriers must adjust ASC payment rates by following these steps

   Stepwise explanation of the general calculation approach used to separate, adjust, and recombine payment components for ASC facility services. Includes the handling of groups with an IOL allowance at a high level.

3. EXAMPLE 1

   Illustrative payment-adjustment example for an ASC procedure group without an IOL allowance. Demonstrates the overall workflow using a sample wage index and group payment rate.

4. EXAMPLE 2

   Illustrative payment-adjustment example for ASC procedure groups that include an IOL allowance. Shows how the adjustment framework is applied in a second sample scenario.