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Why Skilled Nursing Facilities Lose Money Without Realizing It: The Payer-Mix Margin Gap

Why SNFs Lose Money Without Knowing It

A skilled nursing facility can have strong occupancy, a stable clinical team, and a positive overall margin—and still be losing money in a way the standard monthly financial report does not make obvious. By: Paul Mason, Director of Strategic Partnerships at LTCPro For: SNF administrators, CFOs, controllers, and business office directors The reason is often […]

A skilled nursing facility can have strong occupancy, a stable clinical team, and a positive overall margin—and still be losing money in a way the standard monthly financial report does not make obvious.

By: Paul Mason, Director of Strategic Partnerships at LTCPro

For: SNF administrators, CFOs, controllers, and business office directors

The reason is often a payer-mix margin gap.

A blended margin combines Medicare, Medicaid, Medicare Advantage, private pay, and other revenue into one facility-level number. It can tell leadership whether the facility earned more than it spent overall. It cannot reliably show which payer lines are profitable, which are losing money, and whether a strong Medicare line is offsetting losses elsewhere.

For SNF administrators, CFOs, controllers, and business office directors, the question is not simply:

Is the facility profitable?

It is:

Which payer categories, resident days, and payment workflows are producing margin and which are quietly consuming it?

The margin gap in current SNF data

MedPAC’s March 2026 report shows how different payer categories can produce very different margins for freestanding skilled nursing facilities.

For 2024, MedPAC reported:

Margin measure for freestanding U.S. SNFs 2024 result
Medicare fee-for-service margin 24.4%
Non-Medicare fee-for-service margin −2.3%
Total all-payer margin 2.1%
Facilities with a negative total margin 40%
Projected Medicare FFS margin for 2026 About 25%

(Read MedPAC’s March 2026 report on skilled nursing facility services)

These are national averages for freestanding SNFs. They do not mean every facility has the same payer mix, cost structure, Medicaid rate, Medicare margin, or operating performance.

They do reveal an important financial pattern:

  • Medicare FFS margin can be substantially positive.
  • Non-Medicare FFS margin can remain negative.
  • The blended all-payer margin can look modestly positive.
  • A large share of facilities can still operate at an overall loss.

That is the margin gap.

A favorable Medicare margin may offset losses in Medicaid, Medicaid managed care, Medicare Advantage, or other payer categories. The blended total can therefore make a facility appear more financially stable than its Medicaid or non-Medicare operations actually are.

A blended margin is a summary metric. It is not a diagnostic.

Why the blended margin can mislead

Two SNFs can report the same overall margin while facing very different financial risk.

Facility Medicare margin Medicaid and other payer margin Total margin What leadership needs to know
Facility A 25% −4% 2% Medicare is offsetting recurring losses in other payer lines
Facility B 10% 1% 2% Margin is more balanced but depends less on one high-performing payer category

Both facilities report a 2% total margin. Their operational priorities are not the same.

Facility A may need to focus on Medicaid rate accuracy, managed-care contract terms, underpayments, authorization controls, AR, and payer-specific cost drivers. It may also be more exposed if Medicare payment conditions or Medicare census change.

Facility B may need to improve overall operating efficiency, but it has less dependence on Medicare profitability to offset other payer categories.

This is why SNF finance leaders should report payer-level performance separately for:

  • Medicare Part A fee-for-service
  • Medicare Advantage
  • Medicaid fee-for-service
  • Medicaid managed care, ideally by material MCO
  • Private pay
  • Veterans Affairs, hospice, or other payer arrangements where material
  • Specialty service lines with distinct rates or costs

Medicare margins are under scrutiny

MedPAC’s reported Medicare FFS margins should not be treated as a permanent financial cushion.

In its March 2026 report, MedPAC recommended that Congress reduce FY 2027 Medicare base payment rates for skilled nursing facilities by 4%. The Commission concluded that Medicare FFS payments remain higher than necessary to cover the costs of efficient providers. (Read MedPAC’s FY 2027 recommendation)

That recommendation is not the same as an enacted rate reduction. Medicare payment policy is determined through federal legislation and CMS rulemaking.

Still, the implication for SNF planning is clear: facilities should stress-test their financial performance rather than assume that current Medicare margins will permanently offset weaker payer lines.

MedPAC also notes that freestanding SNF Medicare FFS margins have exceeded 10% for more than two decades. (Read MedPAC’s SNF payment analysis)

Run a payer-mix stress test

Use your facility’s own revenue, resident days, rates, and direct costs to model what happens if Medicare performance changes.

Total Margin = Total Revenue − Total Expenses / Total Revenue

Review at least three scenarios:

Scenario What to model What it reveals
Current position Current payer mix, rates, resident days, cost, AR, and collections Where margin is being generated or lost today
Medicare pressure Lower Medicare revenue, lower Medicare census, or reduced Medicare margin How much the facility depends on Medicare contribution margin
Payer-mix shift More Medicaid or managed-care days and fewer Medicare days Whether the facility can sustain its current cost structure under a different census mix

Do not use national averages to make operating decisions. Use facility-level data, including actual rates, staffing expenses, pharmacy costs, therapy costs, resident acuity, occupancy, MCO terms, AR aging, and collection patterns. The same payer-level view matters if you are buying a facility. A seller’s blended margin can hide exactly this gap, which is why payer-level revenue cycle review belongs in SNF acquisition due diligence

LTCPro can help your SNF separate Medicare, Medicaid, managed-care, and private-pay performance so leadership can see the payer-level margin drivers hidden inside a blended financial statement.

Get My Payer-Mix Margin Review →

Why Medicaid and managed-care margins weaken

A negative Medicaid or non-Medicare margin is not always caused by one low rate.

It is often the cumulative effect of reimbursement, operational, and payment-control issues, along with other hidden costs of skilled nursing that rarely show up in a monthly report

Common drivers include:

  • State Medicaid rates that do not keep pace with labor, clinical, pharmacy, or operating costs
  • Managed-care contract rates that differ from state FFS rates
  • Missed state rate updates, acuity adjustments, quality payments, or supplemental-payment opportunities
  • Incorrect patient-liability calculations
  • Underpayments that are posted but never reconciled against expected payment
  • Authorization gaps and continued-stay delays
  • Eligibility changes that are discovered after claims have already been submitted
  • Claims pended, denied, or delayed because payer-specific requirements were not met
  • Aging Medicaid AR and delayed cash conversion
  • Recoupments or offsets that are not reviewed promptly
  • Resident-acuity documentation that does not support the applicable payment methodology
  • High-cost resident needs that are not adequately reflected in payment terms
  • MCO administrative requirements that increase billing workload without improving reimbursement

Not every issue is recoverable through revenue-cycle work. Some require a contract, rate, cost, clinical-model, service-line, or market strategy decision.

But leadership cannot make the right strategic decision until it separates a structural payment problem from an operational collection problem.

Use a payer-level margin bridge

A margin bridge shows why a payer category is underperforming.

Margin driver Key question
Reimbursement rate Are we being paid the correct state-approved, contract, or negotiated rate?
Resident days Are actual days and census mix consistent with the budget?
Resident acuity Does the applicable payment model reflect documented care needs?
Authorization Are initial approvals, continued stays, and renewals current?
Eligibility Are Medicaid eligibility, MCO assignment, and patient liability confirmed for billed dates?
Claims Are denials, pends, rejections, and corrected claims worked promptly?
Underpayments Are expected payments compared with actual remittances?
Contract terms Do MCO rates, exclusions, appeal rights, and documentation rules create avoidable loss?
Cost structure Do labor, pharmacy, therapy, transportation, or ancillary costs exceed reimbursement for the payer category?
Cash conversion Is AR aging or payment lag creating a liquidity issue despite earned revenue?

This framework helps leaders avoid treating every negative margin as a “billing problem.”

Sometimes the answer is a claim correction. Sometimes it is an underpayment recovery. Sometimes it is a payer-contract renegotiation. Sometimes it is a decision about admissions mix, staffing, care capability, or long-term operating strategy.

A Medicare Part A revenue leak: interrupted stays

The Medicare Part A interrupted-stay policy is separate from Medicaid reimbursement. It is included here because Medicare revenue often has a meaningful effect on overall SNF margin, and interrupted-stay errors can distort Medicare payment even when claims appear clean.

Under the Patient-Driven Payment Model, or PDPM, certain SNF payment components use a variable per diem adjustment schedule. CMS created the interrupted-stay policy to prevent that payment schedule from restarting when a resident has a short discharge and returns quickly to the same facility.

An interrupted stay occurs when a Medicare beneficiary:

  • Is discharged from a SNF; and
  • Is readmitted to the same SNF within three or fewer consecutive calendar days.

When those conditions are met:

  • The readmission is treated as a continuation of the prior Medicare Part A stay.
  • The assessment schedule continues from the point reached before discharge.
  • The variable per diem schedule continues from the point reached before discharge.
  • A new five-day assessment is not required solely because the resident returned.

If the resident returns after more than three consecutive calendar days, or is admitted to a different SNF, the stay is generally treated as new. (Read CMS’s PDPM interrupted-stay guidance)

Why interrupted stays create hidden billing errors

Interrupted-stay errors often arise from a handoff failure, not a lack of clinical care.

The person who knows the discharge and return dates may be in admissions or nursing. The person who applies the payment and assessment rules may be in MDS, billing, or the business office.

When those facts are not communicated quickly, the facility may:

  • Treat an interrupted stay as a new stay
  • Reset the payment schedule incorrectly
  • Complete an unnecessary assessment
  • Treat a new stay as a continuation
  • Miss a required assessment
  • Use the wrong variable per diem day
  • Create inaccurate Medicare billing or payment data

These errors may not appear as immediate denials. That is why they can remain undetected until a reconciliation, audit, payment review, or internal analysis identifies the issue.

Add an interrupted-stay check

For every Medicare Part A readmission, confirm:

Check Why it matters
Did the resident return to the same SNF? The interrupted-stay policy applies only to returns to the same facility
How many consecutive calendar days elapsed? Three or fewer days can result in continuation of the prior stay
What was the prior Medicare Part A stay day? Determines the correct continuation point
What is the MDS assessment status? Helps determine whether assessment schedules continue or restart
Was the MDS coordinator notified immediately? Prevents assessment and billing decisions based on incomplete facts
Does billing reflect the correct variable per diem day? Supports accurate Medicare Part A reimbursement

LTCPro can help your facility review Medicare Part A discharge-and-readmission workflows to identify interrupted-stay risk before it creates inaccurate payment or audit exposure.

Check My Interrupted-Stay Billing →

Three situations that expose the margin gap

The following scenarios are illustrative. They are not client case studies or financial advice.

Medicare profitability obscured Medicaid losses

A facility reviewed total margin every quarter and saw a positive result. Leadership assumed the payer mix was healthy.

A payer-level analysis found that Medicare Part A generated strong contribution margin, while Medicaid and one large Medicaid managed-care plan were consistently negative. Those payer categories represented a significant share of census.

What went wrong: The facility relied on a blended margin report.

Better control: Review payer-level revenue, direct cost, payment lag, denials, underpayments, AR aging, and margin every month.

A same-facility return was processed as a new stay

A resident returned to the same SNF two calendar days after discharge. The return was processed as a new Medicare Part A stay.

The variable per diem and assessment schedules were restarted even though the interrupted-stay policy required continuation of the prior stay.

What went wrong: Admissions, MDS, and billing did not use a common readmission handoff process.

Better control: Require same-day review of facility identity, discharge date, return date, prior stay day, and MDS status for every Medicare Part A return.

The budget depended too heavily on Medicare margin

An SNF’s budget assumed current Medicare profitability would continue to offset lower-margin payer categories. It did not model lower Medicare census, lower Medicare margin, or a larger share of Medicaid and managed-care resident days.

The facility had no early warning of how quickly total margin could narrow.

What went wrong: The budget relied on historical total margin rather than payer-level sensitivity analysis.

Better control: Run annual and quarterly payer-mix scenarios using actual facility data.

If leadership cannot explain why Medicare, Medicaid, Medicare Advantage, and managed-care margins moved last month, LTCPro can help create a payer-level margin bridge tied to billing, AR, payment, and operational data.

Identify My SNF Margin Leaks →

Build a monthly margin scorecard

A focused scorecard helps leadership see the drivers behind total margin.

Metric What it shows
Revenue by payer Which payer categories generate facility revenue
Resident days by payer Whether census changes are increasing exposure to lower-margin payers
Contribution margin by payer Which payer categories contribute positively or negatively after direct cost
Medicaid and MCO AR days Whether earned revenue is converting to cash on time
Denial and pend rate by payer Payer-specific workflow and documentation friction
Expected-versus-paid variance Potential underpayments, rate discrepancies, and remittance issues
Authorization expirations Preventable noncovered-day or claim-risk exposure
Patient-liability variance Unresolved resident responsibility that affects collections
MCO contract-rate changes Payment terms and rate changes that require review
Interrupted-stay exceptions Medicare Part A readmissions requiring payment-schedule validation
Top three margin variances The issues leadership needs to assign and resolve

Review the scorecard monthly. Focus the meeting on decisions:

  • Which payer line changed?
  • What caused the change?
  • Is it a rate, cost, census, billing, authorization, eligibility, AR, or contract issue?
  • What is recoverable?
  • Who owns the next action?
  • When will leadership see the result?

How LTCPro supports margin visibility

LTCPro provides revenue-cycle, billing, accounts-receivable, prior-authorization, and financial workflow support for U.S. skilled nursing facilities.

For SNFs seeking a clearer view of margin performance, LTCPro can help organize the claims, payment, authorization, AR, and payer information that affects collectible revenue.

Depending on the facility’s systems, contracts, payer mix, and available data, LTCPro can help:

  • Segment AR, payments, denials, and claims activity by payer
  • Identify payment lag and aging risk across Medicare, Medicaid, MCO, and private-pay categories
  • Reconcile expected payment against remittance activity
  • Flag underpayments, recoupments, adjustments, and payer-specific variance patterns
  • Track eligibility, authorizations, continued stays, and claims readiness
  • Support Medicaid and managed-care claims follow-up
  • Improve communication across admissions, MDS, billing, AR, and finance teams
  • Review Medicare Part A discharge-and-readmission workflow controls
  • Create finance-ready reports that connect payer performance to operational action

LTCPro does not set state Medicaid rates, determine Medicare coverage, make clinical or coding decisions, provide legal or reimbursement-law advice, or guarantee payment outcomes.

Its role is to help facilities turn fragmented billing, remittance, authorization, AR, and payer data into a practical view of where revenue is earned, delayed, underpaid, or at risk.

A blended margin report cannot tell you where your facility is losing money. LTCPro can help build a payer-level view that connects rates, claims, AR, payment variance, and operational workflow to the numbers your leadership team sees.

Talk to LTCPro About Margin Visibility →

FAQ

Why do skilled nursing facilities lose money even when occupancy is high?

Occupancy does not guarantee margin. A facility may have lower-paying payer categories, rates that do not cover direct costs, underpayments, authorization gaps, high AR, delayed cash collection, unrecognized patient-liability issues, or a payer mix where strong Medicare performance offsets losses elsewhere.

What is the payer-mix margin gap?

The payer-mix margin gap is the difference in profitability between payer categories. A facility may earn strong Medicare Part A margins while Medicaid, Medicaid managed care, Medicare Advantage, or other payer categories produce lower or negative margins. A blended total margin can conceal that split.

What did MedPAC report about skilled nursing facility margins?

MedPAC reported that freestanding SNFs had a 24.4% Medicare FFS margin and a negative 2.3% non-Medicare FFS margin in 2024. Their total all-payer margin was 2.1%, and 40% of freestanding facilities had a negative total margin. (Read MedPAC’s March 2026 SNF report)

Does a negative non-Medicare margin mean every Medicaid resident loses money?

No. National data does not determine the financial performance of an individual resident, facility, state Medicaid program, or managed-care contract. Facilities should calculate payer-level revenue, direct costs, rates, underpayments, AR, and utilization using their own records.

What is the SNF interrupted-stay policy?

Under Medicare PDPM, a beneficiary who is discharged and returns to the same SNF within three or fewer consecutive calendar days is generally treated as continuing the prior Medicare Part A stay. The assessment schedule and variable per diem schedule continue rather than restarting. (Read CMS’s interrupted-stay guidance)

Does the interrupted-stay policy apply to Medicaid?

No. The PDPM interrupted-stay policy applies to Medicare SNF Part A payment. Medicaid programs and MCOs may have separate requirements for discharge, readmission, bed holds, eligibility, authorization, and billing.

How should an SNF prepare for lower Medicare margins?

Use payer-level financial data to model the effect of reduced Medicare rates, lower Medicare census, or a shift toward Medicaid and managed-care days. MedPAC recommended a 4% reduction in FY 2027 Medicare SNF base rates, but that recommendation is not itself a final payment change. (Read MedPAC’s recommendation)

Key takeaways

  • Skilled nursing facilities can lose money without realizing it when a blended margin hides weaker Medicaid, managed-care, or other payer performance.
  • MedPAC reported a 24.4% Medicare FFS margin and a negative 2.3% non-Medicare FFS margin for freestanding SNFs in 2024; 40% of those facilities had a negative overall margin. (Read MedPAC’s SNF margin data)
  • Track revenue, resident days, direct cost, AR, denials, underpayments, payment timing, and margin by payer—not only as a blended facility total.
  • MedPAC’s recommendation to reduce FY 2027 SNF Medicare base rates by 4% reinforces the need for Medicare-margin and payer-mix stress testing. (Read MedPAC’s recommendation)
  • Negative Medicaid or MCO margins may result from rates, contract terms, cost structure, authorizations, eligibility, claims, underpayments, AR, or a combination of factors.
  • Medicare Part A interrupted-stay errors can affect payment accuracy even when a claim does not deny. Same-facility returns within three or fewer consecutive calendar days generally continue the prior stay’s assessment and variable per diem schedule. (Read CMS guidance)
  • LTCPro can help SNFs organize payer-level claims, authorization, remittance, AR, and payment-variance data into workflows that improve margin visibility and revenue integrity.
Author Bio
Paul Mason
Paul Mason

Director of Strategic Partnerships at LTCPro, with over 20 years of experience in long-term care revenue cycle management. Shares insights on AI-driven billing solutions to help skilled nursing and assisted living facilities reduce denials and strengthen financial performance.