POS 11 — Office
Services rendered in a physician's office
Important: POS code usage depends on the specific service, payer policy, and clinical setting. Always verify payer-specific POS requirements. The information on this page is for educational purposes only and does not guarantee payment. Consult the official CMS POS Code Set, payer provider manuals, and current coding guidelines for authoritative guidance.
POS Description
POS 11 is used for services furnished in a physician's office. The office is a location where the physician or non-physician practitioner (NPP) typically provides routine examination, diagnosis, and treatment of patients.
Plain English Explanation
When a patient comes to a doctor's private practice office for a visit — not a hospital or clinic — you use POS 11. This is the most common POS for outpatient E/M services.
Typical Healthcare Settings
Physician's private practice, group practice office, outpatient office suite, medical clinic where the physician practices.
Documentation Expectations
The medical record should document the office visit including chief complaint, history, examination, and medical decision-making. For procedures, document the procedure note with informed consent.
Common Denial Scenarios
- CO-50 (not medically necessary — insufficient documentation)
- CO-16 (incorrect POS for the service)
- CO-97 (bundling)
- CO-11 (diagnosis inconsistent with procedure).
Modifier Considerations
Modifier 25 for significant, separately identifiable E/M on the same day as a procedure. Modifier 95 for telehealth services billed as if in the office (during PHE flexibilities). Modifier 59 for distinct procedures.
Telehealth Considerations
During COVID-19 PHE, telehealth services from a patient's home could be billed with POS 11 and modifier 95. Post-PHE, POS 10 or 02 should be used for telehealth from the patient's home or other location respectively.
Payer-Specific Considerations
Medicare pays the full fee schedule amount for POS 11. Some payers differentiate rates by POS. POS 11 typically has the highest reimbursement for E/M codes compared to facility settings.
Professional vs Facility Billing
POS 11 is primarily a professional billing POS. Facility billing typically does not use POS 11 — hospitals use POS 19-22 for off-campus settings. The physician bills the professional component with POS 11.
Common Mistakes
- Using POS 11 for telehealth services post-PHE (should use 10 or 02). Using POS 11 for hospital outpatient visits (should use 22). Not updating POS when the practice moves locations.
Always Verify
POS 11 usage depends on the specific service, payer policy, and clinical setting. Always verify payer-specific POS requirements and consult the official CMS POS Code Set, payer provider manuals, and current coding guidelines.
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