Pos
Hi Peggy,
Found this here on AAPC Website: states to Read CMS Transmittal 1823, Change Request 6375, issued October 2, for further details.
"Physicians who perform services in a hospital outpatient department should use POS code 22. Unless, that is, the physician maintains separate office space in the hospital or on hospital property that is not considered a provider-based department of the hospital. In that case, and providing the service was performed in the physician's office and not in the hospital, POS code 11 would be appropriate.
To clarify, CMS says, physicians who perform services for an ambulatory surgical center (ASC) should use POS code 24, not POS code 11. Only if the physician has an office at the ASC and the service is performed in the office would POS code 11 be appropriate. “However, no concurrent or overlapping hours can exist between the ASC and the physician's office,” CMS stipulates.
Remember: The POS code should coincide with the ZIP code identified on the claim form; and the ZIP code should coincide with the office practice location given in the physician's enrollment information. When in doubt, contact your Medicare contractor for guidance."