Day: April 10, 2026

Introduction POS 22 in medical billing is the official CMS designation for On Campus-Outpatient Hospital: a hospital-owned outpatient department on the main campus where patients receive care without formal admission. It goes in Item 24B of the CMS-1500. Most billing guides stop there. The real issue is what happens after…

You pulled a CO 50 denial code off your remittance, and now you’re trying to figure out what went wrong and whether you can recover the money. Here’s the thing: this denial has a very specific financial consequence that most billing staff don’t catch until it’s too late. CO-50 is…