CMS Targets PDPM Coding Surge, Warns SNF Payment Rates Could Be Adjusted Downward
What happened
CMS has flagged dramatic increases in PDPM case-mix indices that it says outpace actual changes in patient health status. Malnutrition coding has climbed from 5% of SNF patients before PDPM's implementation to 47% in fiscal 2024, swallowing disorder coding has jumped from 4% to 21%, and depression from 4% to 19%. The agency is developing a regression framework to distinguish legitimate documentation improvements from upcoding, and has warned that the proposed 2.4% FY 2027 payment increase—worth roughly $888 million—could be reduced if the analysis confirms systemic case-mix inflation.
Why it matters
This is the most consequential reimbursement signal of the quarter. If CMS recalibrates PDPM downward, every SNF in the country faces per-diem revenue compression. Facilities that have aggressively coded will face the steepest margin hits, while those with strong clinical documentation practices will be better insulated. Vendors selling MDS coding software, clinical documentation improvement (CDI) platforms, and audit compliance tools are positioned to benefit as operators rush to verify that their coding accurately reflects resident acuity before the final rule drops in late July.
Rehinged analysis of 14,699 scored facilities reveals that 369 facilities already carry high penalty risk scores (70+), making them the most exposed to any PDPM recalibration. These facilities average just 2.3 stars and are concentrated in a handful of states. An additional 1,665 facilities sit in the moderate penalty risk band (scores 40–69), representing operators that could tip into high-risk territory if coding corrections compress their reimbursement. On the value-based purchasing side, 1,926 facilities score high on value-based incentive need, indicating existing financial pressure from the SNF VBP program—a PDPM correction would compound that strain.
The concentration is striking: Illinois alone accounts for 31% of all high-penalty-risk facilities nationally, with those 116 facilities averaging just 1.2 stars. Among the 369 high-penalty-risk facilities, 322 also carry an overall star rating of 2 or below—facilities already struggling with quality scores and now facing potential reimbursement pressure from a PDPM coding correction. Vendors selling clinical documentation improvement software, MDS audit services, and compliance analytics should prioritize Illinois, California, and Texas, where the intersection of penalty exposure and coding scrutiny creates the most urgent buying signal.