- CMS has removed 285 procedures from Medicare’s In-patient only (IPO) list in 2026, with the list set to be eliminated by 2028 – accelerating the shift to outpatient and ambulatory surgery center (ASC) settings.
- Manual site-of-care processes are becoming harder to sustain as CMS policies and commercial payer requirements continue to evolve, exposing hospitals to financial risk.
- Strong surgical procedure data governance can help standardize decisions, reduce variability, and support more consistent documentation.
- Embedding procedure guidance into scheduling and clinical workflows can help organizations prevent downstream reimbursement and administrative challenges.
Medicare’s Inpatient-Only (IPO) list has long determined where certain surgical procedures can be performed and reimbursed. As the Centers for Medicare & Medicaid Services (CMS) continues to remove procedures from the list, hospitals face a growing challenge: identifying the appropriate site of care while balancing reimbursement, compliance, operational efficiency, and patient safety.
In 2026, more than 285 procedures were removed from the IPO list, signaling the start of a broader shift toward outpatient and ambulatory surgery center (ASC) settings. For health systems, the financial implications extend well beyond reimbursement rates.
The IPO phaseout is changing site-of-care decisions
Advances in surgical techniques, anesthesia, and postoperative care have made outpatient treatment appropriate for a growing number of procedures. At the same time, CMS and payers continue encouraging care in lower-cost settings when clinically appropriate.
As a result, site-of-care decisions have become more challenging to keep up with. Scheduling teams, utilization management staff, and revenue cycle leaders must consider:
- CMS reimbursement policies
- Commercial payer requirements
- Patient-specific clinical factors
- Documentation requirements
- Organizational protocols
Many organizations understand policy changes. The challenge is applying them consistently across thousands of procedures and ensuring the HCPCS/CPT® codes are mapped correctly to support scheduling decisions.
A procedure that is historically defaulted to inpatient status may now require additional review. Without a standardized process to update coding, variability can lead to costly mistakes.
The financial risk of getting site of care wrong
The biggest financial risk associated with the IPO phaseout is preventable for site-of-care errors.
When procedures are scheduled in the wrong setting, organizations may face:
- Revenue leakage from claim denials, delayed reimbursement, or total-loss cases
- Additional documentation requests and peer-to-peer reviews
- Delayed patient care from scheduling disruptions
As procedures leave the IPO list, manual processes for maintaining surgical data compliance will become increasingly difficult. Many organizations still rely on spreadsheets, payer websites, reference documents, and institutional knowledge to determine the correct setting. These approaches make it harder to keep pace with evolving policies and payer requirements.
The operational costs add up quickly. Time spent mapping codes, researching policies, and correcting and managing claims diverts resources away from patient care and strategic initiatives.
Why data governance matters
Preventable site-of-care errors and the resulting denials, prior authorization challenges, and revenue loss are often driven by inconsistent or outdated surgical data. Strong data governance helps reduce that risk and creates consistency across health system enterprises by standardizing how procedures are evaluated, coded, and aligned to evolving payer and regulatory requirements.
An effective governance tool or strategy should include:
- Standardized decision criteria for site-of-care and prior authorization
- Clearly defined stakeholder responsibilities
- Ongoing monitoring of payer and regulatory policy changes
- Consistent documentation practices
- Escalation pathways for complex cases
Together, these capabilities reduce variability, improve scheduling accuracy, support cleaner prior authorization submission, and help prevent costly downstream denials before claims are submitted.
Building a sustainable strategy
Strong governance must be embedded into daily workflows. As the IPO list evolves, organizations need scalable ways to apply site-of-care guidance and keep CPT/HCPCS mappings current.
By embedding decision support directly into scheduling and clinical workflows, organizations can provide timely guidance on whether a procedure is appropriate for the inpatient, outpatient, or ASC setting. They can also identify the right codes at the point of care as payer requirements evolve – even when CMS and commercial expectations diverge.
Looking ahead
The IPO list phaseout represents a significant shift in surgical care delivery and reimbursement management. Organizations with strong data governance and regulatory maintenance processes will be better positioned to reduce denials, protect revenue, improve operational efficiency, and adapt as CMS policies continue to evolve.
As more procedures move into outpatient and ASC settings, success will depend on applying accurate site-of-care guidance and identifying the appropriate CPT/HCPCS codes before scheduling decisions are made. Taking a proactive approach helps prevent downstream reimbursement, operational, and administrative challenges while supporting more consistent, compliant care delivery.
Need help ensuring your surgical workflows are aligned with the right site of care as Medicare’s IPO list phaseout continues? Connect with an IMO Health expert.
CPT is a registered trademark of the American Medical Association. All rights reserved.
