PDGM 2026 Changes: What Home-Health Agencies Need to Know

The 2026 Home Health Prospective Payment System final rule is the largest single-year recalibration of PDGM since the model launched in 2020. Between updated case-mix weights, revised LUPA thresholds, expanded comorbidity logic, and a continued behavioral-assumption clawback, every agency in the country will see its per-period reimbursement move — some up, most down. This guide breaks down what changed, why it matters, and what owners and Directors of Nursing should be doing this quarter to protect cash flow.

1. Case-Mix Weight Recalibration

CMS recalibrates the 432 Home Health Resource Groups every year using the most recent year of resource-use data. For CY2026, the agency used 2024 claims to recompute relative weights — the first full post-pandemic dataset without COVID-era distortions. The result is a meaningful redistribution of dollars across clinical groupings.

What moved up

• Wound — weights increased an average of 2.4% across early/late and institutional/community admission source pairs, reflecting higher resource use observed in 2024.
• Complex Nursing Interventions — modest but consistent increases, especially in the high-functional-impairment tiers.
• Neuro Rehabilitation — small upward adjustments in late/institutional categories.

What moved down

• MMTA — Other — the largest single category by volume saw an average 1.8% weight reduction.
• Behavioral Health — weights dropped 2.1% on average, compounded by the broader behavioral-assumption adjustment described below.
• MS Rehab — small reductions in early/community periods.

If your census skews toward MMTA-Other or Behavioral Health, expect your blended case-mix weight per period to fall before any other adjustments are applied. The agencies that get hurt least are the ones that already know their own case-mix distribution by HHRG and can model the new weights against their existing volume.

2. LUPA Threshold Updates

Low-Utilization Payment Adjustment thresholds are the visit floor below which a 30-day period is paid per visit instead of as a full episode. For 2026, CMS again refreshed the thresholds using updated visit-count distributions, and the practical effect is that many HHRGs now require one additional visit to avoid LUPA.

Two implications for operations leaders:

1. Front-loading matters more than ever. If your average period sits at the threshold, a single missed visit in week one now pushes you into per-visit payment. The economic difference between a LUPA and a full period can be more than $1,500.
2. LUPA risk should be a real-time signal, not a month-end report. By the time billing flags a LUPA, the period is already closed. Agencies need scheduling and clinical workflows that show LUPA risk daily, by patient.

3. Comorbidity Adjustment Expansion

The comorbidity adjustment is one of PDGM's most under-coded levers. For 2026, CMS expanded both the low and high comorbidity interaction subgroup lists, adding several conditions — including specific cardiovascular, endocrine, and neurologic diagnoses — that previously did not qualify.

Two things to know:

• An estimated 12–15% of periods that didn't qualify for a comorbidity adjustment in 2025 will qualify in 2026 — but only if the secondary diagnoses are actually documented and coded on the claim.
• The high comorbidity adjustment (paid when two qualifying conditions interact) remains the single most under-captured revenue opportunity in PDGM. Most agencies leave 3–6% of revenue on the table here.

This is where coding accuracy and OASIS quality compound. The agencies that win in 2026 will be the ones whose intake and OASIS workflows surface comorbidity opportunities before the RAP/NOA goes out, not after.

4. Behavioral Assumption Adjustment — The Clawback Continues

When PDGM launched, CMS assumed agencies would change three behaviors: clinical grouping assignment, comorbidity coding, and LUPA avoidance. The agency reserved the right to "claw back" the resulting overpayments — and it has been doing so, in installments, since the 2023 rule.

For 2026, CMS finalized another permanent payment reduction (applied as a negative adjustment to the 30-day base payment rate) plus a temporary adjustment to recoup prior-year overpayments. Even with the statutory market-basket update, the net effect for most agencies is a small payment decrease before case-mix changes are layered in.

5. Cash-Flow Impact: What to Model

If you build a quick 2026 revenue forecast, three numbers matter most:

1. Your blended case-mix weight by clinical grouping. Take your 2025 volume, apply 2026 weights, and look at the delta in dollars.
2. Your LUPA rate. Even a 1-point increase in LUPA rate on 200 periods a month can mean $30,000–$50,000 per month in lost revenue.
3. Your comorbidity capture rate. If you're below 35% of periods with a comorbidity adjustment, you almost certainly have room to grow.

You don't need a perfect model — you need enough of a model to know whether you're tracking ahead or behind, in time to do something about it.

6. What Agencies Should Do Now — Action Checklist

1. Run a HHRG mix analysis for the last 12 months. Identify your top 10 HHRGs by volume and look up their 2026 weight changes.
2. Audit a sample of 30 closed periods for missed secondary diagnoses that would have qualified under the expanded 2026 comorbidity lists.
3. Set a LUPA-risk daily review. Any period at or within one visit of the threshold should be reviewed by a clinical manager every weekday.
4. Re-train intake on OASIS items M1021, M1023, and the functional set. These three drive most of the case-mix variance.
5. Re-quote your software stack. If your EHR can't surface LUPA risk, comorbidity opportunities, and HHRG-level revenue forecasts in real time, you're paying for the wrong tool. See EaseEHR pricing or compare to your current per-patient cost.
6. Talk to billing weekly, not monthly. The first 60 days of any rule change is when claim rejections spike.

The Bottom Line

PDGM 2026 isn't a crisis — it's a recalibration. Agencies that treat it as a forcing function to clean up coding, tighten LUPA management, and re-think their software stack will end the year stronger than they started. Agencies that simply absorb the cuts will quietly lose 2–4% of margin without ever knowing exactly where it went.

The technology is finally good enough to do this without adding back-office headcount. A modern, AI-assisted home-health EHR can flag missing comorbidities at intake, project case-mix revenue per period, and surface LUPA risk before the period closes — the three biggest 2026 levers, automated.