POS 21: Inpatient Hospital

POS code 21 (Inpatient Hospital) identifies where a service was furnished, which affects how the claim is priced and paid.

Facility or non-facility?

Whether this location is treated as a facility or non-facility affects the practice-expense portion of Medicare payment; confirm the designation for this POS. See how facility vs non-facility affects Medicare fees →

When it's used

Report POS 21 on the claim when the service was furnished in this setting, consistent with the documentation.

More free billing tools: all POS codes · Medicare fees · modifiers · denial codes

General Place of Service reference. The correct POS depends on where the service was furnished and affects payment (facility vs non-facility) and coverage. Verify current CMS POS guidance and your payer's rules.