OPPS Rule: Total Joint Changes Expected to Hit Hospital Finances Hard

The 2018 Outpatient Prospective Payment System (OPPS) proposed rule arrived Friday from the Centers for Medicare & Medicaid Services (CMS), coming in at 664 pages, which is not very long, based on history. Keep in mind that it is double-spaced, and the first 57 pages consist of the table of contents, the abbreviations used, and a summary of the proposals.

So, what’s in the OPPS proposed rule that we all need to know about? Well, the biggest news is that CMS will be taking total knee replacements off the inpatient-only list. I should say that they are proposing to remove it, since the rule is not finalized, but I think it is a done deal.

How will this affect us and our patients? Well, first of all, reimbursement is going to drastically change. If a total knee replacement is performed as an outpatient procedure, it will be paid under the ambulatory payment system (APC), with CMS assigning it to Comprehensive APC 5115, a level 5 musculoskeletal procedure with a base payment rate of about $9,700 in 2017 (2018 APC rates are not yet available).

But unlike an inpatient-admission, diagnosis-related group (DRG) payment – which includes additional funds added for medical students and resident education, uncompensated care, and the disproportionate share program, and is fully adjusted by the wage index – the outpatient APC amount is only adjusted for the wage index, and only at 60 percent of that sum. For example, New York Presbyterian Hospital gets approximately $23,000 for an inpatient total knee replacement, but if the procedure is performed as outpatient, it will get about $11,500. For many hospitals, joint programs are one of their most significant profit centers, so this is going to hurt.

But let me remind you that just because a surgery is not on the inpatient-only list, that doesn’t mean it can’t be performed as an inpatient procedure. We are going to need to get our orthopedists to start documenting much better if a patient is admitted as an inpatient.

First, since the surgery will no longer be inpatient-only, the two-midnight expectation will apply. That means the surgeon or another treating physician will need to document why the patient is expected to require two or more midnights of hospital care. This will likely be due to patient comorbidities, which will extend the hospital stay, or the surgeon’s need to monitor the patient’s immediate post-operative course more closely than would be possible in a lesser setting.

Then, in order for the patient to gain access to their Part A skilled nursing facility (SNF) benefit (if a SNF stay is warranted), the patient must require a third midnight in the hospital – and the surgeon or other treating physician must document why the patient needs to remain in the hospital for this third midnight.

Those patients who do require inpatient admission yet do not have medical necessity for a third inpatient day will be challenging for the hospital’s discharge planning team. It will be imperative that those hospitals that are not part of the Comprehensive Care for Joint Replacement (CJR) or Bundled Payment for Care Improvement (BPCI) programs to start now to improve their pre-surgery programs for total joint patients. Patients need to be carefully assessed for their anticipated post-surgery needs. If they are anticipated to be unable to return home after surgery, assessment to determine if they meet the requirements for admission and a three-day stay will need to be performed.

Hospitals may want to consider involving their physical medicine and rehabilitation physicians in those pre-operative assessments. They can not only work closely with the therapists to design a custom rehabilitation plan, but they can also assess the patient for eligibility for admission to an inpatient rehabilitation facility (IRF) after surgery. Although total knee replacement is not generally a qualifying condition for an IRF, there are extenuating circumstances that may allow it.

While the removal of total knee replacement from the inpatient-only list is a significant blow to hospitals, the good news for now is that CMS is still not going to allow the surgery to be performed at an ambulatory surgery center (ASC). When that happens, it is going to get really ugly for hospital finances.

But that point is potentially only 18 months away, because CMS also asked for comments on allowing total knee replacements to be added to addendum AA. Addendum AA is the list of surgeries that may be performed at ASCs. Since CMS is just now asking for comments, it cannot propose actually placing this on addendum AA until the 2019 OPPS proposed rule is released, and then it could become effective as of Jan. 1, 2019.

But there is more. Rather than taking two small steps, as it did with total knee replacement, CMS is going all-in with hip replacements. In the Rule, CMS is asking for comments to not only remove total and partial hip replacement from the inpatient-only list, but also to allow them at ASCs. That means there is the potential that by Jan. 1, 2019, the only patients who will be having knee and hip replacements in the hospital will be those who have multiple comorbidities and are going to have long, expensive stays – while the healthy patients will all go off to the ASCs.

Of much less interest but also worth noting is that CMS is proposing to remove radical prostatectomy (CPT code 55866) from the inpatient-only list. This surgery is most commonly done robotically, and the possible revenue drop from $12,000 to $23,000 per procedure as inpatient to about $7,000 as outpatient will be significant. But because the volume of prostatectomies is dropping, both due to the move to watchful waiting and to non-surgical forms of treatment when treatment is indicated, the overall revenue impact on hospitals will be less than that of the changes to the joint replacements.

There is also a much-welcomed two-year extension of the non-enforcement of direct supervision at small hospitals of under 100 beds, and a request for comments on what is known as the “14-day rule” for billing lab tests on patients who had procedures in a hospital.

The rule also asks for comments about allowing cardiac catheterizations and select electrophysiologic procedures to be done in ASCs; what is proposed would constitute a huge cut in reimbursement for medications in the 340B program, and if adopted, it is going to really hurt.

I am sure we will be hearing a lot more about that from others. 

Facebook
Twitter
LinkedIn

Ronald Hirsch, MD, FACP, ACPA-C, CHCQM, CHRI

Ronald Hirsch, MD, is vice president of the Regulations and Education Group at R1 Physician Advisory Services. Dr. Hirsch’s career in medicine includes many clinical leadership roles at healthcare organizations ranging from acute-care hospitals and home health agencies to long-term care facilities and group medical practices. In addition to serving as a medical director of case management and medical necessity reviewer throughout his career, Dr. Hirsch has delivered numerous peer lectures on case management best practices and is a published author on the topic. He is a member of the Advisory Board of the American College of Physician Advisors, and the National Association of Healthcare Revenue Integrity, a member of the American Case Management Association, and a Fellow of the American College of Physicians. Dr. Hirsch is a member of the RACmonitor editorial board and is regular panelist on Monitor Mondays. The opinions expressed are those of the author and do not necessarily reflect the views, policies, or opinions of R1 RCM, Inc. or R1 Physician Advisory Services (R1 PAS).

Related Stories

Key Targets of the WISeR Program

In the Centers for Medicare & Medicaid Services’ (CMS’s) ongoing attempts to conquer fraud, waste, and abuse, it launched the WISeR (Wasteful and Inappropriate Service

Read More

Leave a Reply

Please log in to your account to comment on this article.

Featured Webcasts

Sepsis Sequencing in Focus: From Documentation to Defensible Coding

Sepsis sequencing continues to challenge even experienced coding and CDI professionals, with evolving guidelines, documentation gaps, and payer scrutiny driving denials and data inconsistencies. In this webcast, Payal Sinha, MBA, RHIA, CCDS, CDIP, CCS, CCS-P, CCDS-O, CRC, CRCR, provides clear guideline-based strategies to accurately code sepsis, severe sepsis, and septic shock, assign POA indicators, clarify the relationship between infection and organ dysfunction, and align documentation across teams. Attendees will gain practical tools to strengthen audit defensibility, improve first-pass accuracy, support appeal success, reduce denials, and ensure accurate quality reporting, empowering organizations to achieve consistent, compliant sepsis coding outcomes.

March 26, 2026
I022426_SQUARE

Fracture Care Coding: Reduce Denials Through Accurate Coding, Sequencing, and Modifier Use

Expert presenters Kathy Pride, RHIT, CPC, CCS-P, CPMA, and Brandi Russell, RHIA, CCS, COC, CPMA, break down complex fracture care coding rules, walk through correct modifier application (-25, -57, 54, 55), and clarify sequencing for initial and subsequent encounters. Attendees will gain the practical knowledge needed to submit clean claims, ensure compliance, and stay one step ahead of payer audits in 2026.

February 24, 2026
Mastering Principal Diagnosis: Coding Precision, Medical Necessity, and Quality Impact

Mastering Principal Diagnosis: Coding Precision, Medical Necessity, and Quality Impact

Accurately determining the principal diagnosis is critical for compliant billing, appropriate reimbursement, and valid quality reporting — yet it remains one of the most subjective and error-prone areas in inpatient coding. In this expert-led session, Cheryl Ericson, RN, MS, CCDS, CDIP, demystifies the complexities of principal diagnosis assignment, bridging the gap between coding rules and clinical reality. Learn how to strengthen your organization’s coding accuracy, reduce denials, and ensure your documentation supports true medical necessity.

December 3, 2025

Proactive Denial Management: Data-Driven Strategies to Prevent Revenue Loss

Denials continue to delay reimbursement, increase administrative burden, and threaten financial stability across healthcare organizations. This essential webcast tackles the root causes—rising payer scrutiny, fragmented workflows, inconsistent documentation, and underused analytics—and offers proven, data-driven strategies to prevent and overturn denials. Attendees will gain practical tools to strengthen documentation and coding accuracy, engage clinicians effectively, and leverage predictive analytics and AI to identify risks before they impact revenue. Through real-world case examples and actionable guidance, this session empowers coding, CDI, and revenue cycle professionals to shift from reactive appeals to proactive denial prevention and revenue protection.

November 25, 2025

Trending News

Featured Webcasts

Mastering MDM for Accurate Professional Fee Coding

In this timely session, Stacey Shillito, CDIP, CPMA, CCS, CCS-P, CPEDC, COPC, breaks down the complexities of Medical Decision Making (MDM) documentation so providers can confidently capture the true complexity of their care. Attendees will learn practical, efficient strategies to ensure documentation aligns with current E/M guidelines, supports accurate coding, and reduces audit risk, all without adding to charting time.

March 31, 2026

The PEPPER Returns – Risk and Opportunity at Your Fingertips

Join Ronald Hirsch, MD, FACP, CHCQM for The PEPPER Returns – Risk and Opportunity at Your Fingertips, a practical webcast that demystifies the PEPPER and shows you how to turn complex claims data into actionable insights. Dr. Hirsch will explain how to interpret key measures, identify compliance risks, uncover missed revenue opportunities, and understand new updates in the PEPPER, all to help your organization stay ahead of audits and use this powerful data proactively.

March 19, 2026

Top 10 Audit Targets for 2026-2027 for Hospitals & Physicians: Protect Your Revenue

Stay ahead of the 2026-2027 audit surge with “Top 10 Audit Targets for 2026-2027 for Hospitals & Physicians: Protect Your Revenue,” a high-impact webcast led by Michael Calahan, PA, MBA. This concise session gives hospitals and physicians clear insight into the most likely federal audit targets, such as E/M services, split/shared and critical care, observation and admissions, device credits, and Two-Midnight Rule changes, and shows how to tighten documentation, coding, and internal processes to reduce denials, recoupments, and penalties. Attendees walk away with practical best practices to protect revenue, strengthen compliance, and better prepare their teams for inevitable audits.

January 29, 2026

AI in Claims Auditing: Turning Compliance Risks into Defensible Systems

As AI reshapes healthcare compliance, the risk of biased outputs and opaque decision-making grows. This webcast, led by Frank Cohen, delivers a practical Four-Pillar Governance Framework—Transparency, Accountability, Fairness, and Explainability—to help you govern AI-driven claim auditing with confidence. Learn how to identify and mitigate bias, implement robust human oversight, and document defensible AI review processes that regulators and auditors will accept. Discover concrete remedies, from rotation protocols to uncertainty scoring, and actionable steps to evaluate vendors before contracts are signed. In a regulatory landscape that moves faster than ever, gain the tools to stay compliant, defend your processes, and reduce liability while maintaining operational effectiveness.

January 13, 2026

Trending News

Happy National Doctor’s Day! Learn how to get a complimentary webcast on ‘Decoding Social Admissions’ as a token of our heartfelt appreciation! Click here to learn more →

CYBER WEEK IS HERE! Don’t miss your chance to get 20% off now until Dec. 1 with code CYBER25

CYBER WEEK IS HERE! Don’t miss your chance to get 20% off now until Dec. 2 with code CYBER24