New CMS Rule Targets a Hidden Hospital Crisis: Malnutrition

CHICAGO, IL – August 04, 2026 – In a move that signals a fundamental shift in how American hospitals define quality care, the Centers for Medicare & Medicaid Services (CMS) will now require facilities to systematically track and report their handling of patient malnutrition. The decision, included in the fiscal year 2027 Inpatient Prospective Payment System final rule, mandates the use of the Malnutrition Care Score (MCS) beginning in 2028, making it the first nutrition-focused electronic clinical quality measure (eCQM) required under the agency’s vast Hospital Inpatient Quality Reporting (IQR) Program.

This policy change, impacting over 3,000 acute care hospitals, elevates nutrition from a background consideration to a core, measurable component of patient safety and hospital accountability. For years, patient advocates and clinicians have warned that malnutrition is a silent epidemic within hospital walls, complicating recovery and driving up costs. Now, data will be the tool to bring it into the light.

“This is an important milestone for patients and the healthcare system,” said Tamara Randall, President of the Academy of Nutrition and Dietetics, the organization that spearheaded the measure’s development. “Malnutrition can prolong recovery and increase the risk of complications and hospital readmissions. Requiring the MCS will help make identifying and addressing malnutrition a consistent part of high-quality hospital care.”

A Systemic Blind Spot Made Visible

While often associated with images of extreme frailty, hospital-related malnutrition is a complex clinical condition that is not always visible or reflected by weight alone. It affects an estimated 20% to 50% of adult patients, with the risk being even higher among the elderly and those with chronic diseases. This condition quietly undermines the healing process, leading to a cascade of negative outcomes.

According to extensive research from sources like the Agency for Healthcare Research and Quality (AHRQ), malnourished patients are at a significantly higher risk for infections, pressure injuries, and impaired wound healing. Their hospital stays are longer, and they are far more likely to be readmitted within 30 days of discharge. This cycle of poor health comes with a staggering price tag, with studies suggesting that malnutrition adds between $4,000 and $10,000 in costs per patient, contributing billions annually to national healthcare expenditures.

“For too long, nutrition has been treated as a secondary service rather than a primary pillar of recovery,” explained a quality improvement director at a major metropolitan hospital, who spoke on the condition of anonymity. “A patient can receive world-class surgery, but if their body doesn't have the fundamental building blocks to heal, the outcome is compromised. This mandate forces a necessary, system-wide course correction.”

Data as a Driver: The Mechanics of the Mandate

The power of the new rule lies in its structure as an electronic clinical quality measure. The Malnutrition Care Score is not a single test but a composite score that evaluates whether a hospital performs four evidence-based steps using data documented directly in a patient's electronic health record (EHR):

1. Screening: Was the patient screened for malnutrition risk upon admission?
2. Assessment: If identified as at-risk, did a Registered Dietitian Nutritionist (RDN) perform a comprehensive nutrition assessment?
3. Diagnosis: Was a formal malnutrition diagnosis documented by the care team?
4. Care Plan: Was a nutrition care plan developed for the malnourished patient?

By requiring hospitals to report on this process, CMS is leveraging the data infrastructure of the digital age to drive clinical practice. As part of the Hospital IQR Program, failure to successfully report quality data can result in a reduction of a hospital's annual payment update from Medicare—a powerful financial incentive for compliance. The transition to an eCQM means hospitals must not only perform these actions but also ensure their EHR systems and clinical workflows are robust enough to capture and report them accurately.

For many institutions, the road to 2028 will involve significant operational lifts, including EHR vendor collaboration, workflow redesign, and extensive staff training. However, the long-term benefits are expected to include standardized care, better interdisciplinary communication, and a wealth of data that can be used to benchmark performance and drive further improvements.

The Human Element: Elevating Dietitians and Patient Recovery

Beyond the data and dollars, this policy represents a profound validation of a critical, yet often underutilized, clinical specialty. The MCS mandate solidifies the role of Registered Dietitian Nutritionists (RDNs) as indispensable members of the hospital care team. Identifying malnutrition requires their specialized expertise to evaluate food intake, muscle and fat loss, fluid retention, and other clinical factors.

Under the new mandate, the RDN's role moves from a consultative function to one that is integral to meeting a core quality metric. This is expected to increase the demand for RDNs and empower them to lead nutrition-focused quality initiatives within their institutions. They will be central to translating assessment findings into individualized care plans, collaborating with physicians on diagnosis, and monitoring patient progress.

“This decision reflects years of Academy leadership, research and collaboration across the nutrition and dietetics profession and the broader healthcare community,” Randall stated. “Mandatory reporting will help hospitals establish consistent clinical workflows, strengthen interdisciplinary coordination and ensure that patients at risk of malnutrition receive the care they need.”

The journey to this mandate has been a long one. The Academy of Nutrition and Dietetics began working with stakeholders to develop the measure back in 2013, followed by years of testing and refinement. It was first introduced as a voluntary reporting option in 2024, giving hospitals a runway to prepare for the new era of accountability. With the 2028 deadline now set, the healthcare system is on notice: a patient’s nutritional health is no longer an optional component of care, but a measurable standard of its quality.