When the Hospital Calls It Observation: A Working Guide to the Last Remaining Appeal Path After Alexander v. Azar

Four nights in a hospital bed. Zero hospital days, per Medicare's accounting. The bill that arrived three weeks later, addressed to a 76-year-old retired electrician in Cleveland, took the form of a denial of skilled nursing facility coverage rather than a hospital invoice. In early February the patient had been wheeled into a teaching hospital's emergency department with slurred speech and a drooping right side of his face; imaging confirmed a small ischemic stroke; he spent the next four nights on a neurology unit, received intravenous medication, wore a hospital wristband, and answered the same orientation questions from a rotating cast of residents. On the morning of the fifth day, a discharge planner told his daughter a skilled nursing facility had been identified for short-term rehab. By that afternoon a different staff member called back with a correction. The patient did not qualify. He had never been admitted. He had been on observation status the entire time, and four nights under observation counted, for purposes of Medicare's three-midnight inpatient rule, as zero.

The family had been given the MOON, the Medicare Outpatient Observation Notice, around hour 30. They had signed it without understanding it. No one told them the classification would later cost them roughly $12,000 in rehab the patient would otherwise have received at no out-of-pocket cost. And no one mentioned the case that for ten years had carried the hope of fixing exactly this problem, Alexander v. Azar, whose retrospective appeal window had closed five weeks earlier, on January 2, 2026.

This article is the working guide to what is left. It is procedural, not legal advice. It covers the 2-Midnight Rule, the MOON notice, the financial mechanics, the history of the litigation, and the narrow paths that remain. The governing regulation is 42 CFR 412.3. The MOON rule is at 42 CFR 489.20(y). The class action is Alexander v. Azar, 613 F. Supp. 3d 559 (D. Conn. 2020), affirmed sub nom. Barrows v. Becerra, 24 F.4th 116 (2d Cir. 2022).

What observation status actually is

Observation status is an outpatient designation under Medicare. The patient is physically in the hospital, in a hospital bed, receiving hospital services, but is billed under Part B rather than Part A. The classification is made by the admitting or attending physician, usually with utilization-review support.

The 2-Midnight Rule at 42 CFR 412.3, effective since October 1, 2013, sets the framing. If at the time of admission the admitting physician expects the patient to require medically necessary hospital care spanning at least two midnights, the patient should be admitted as an inpatient. If the expected stay is shorter, observation is the appropriate status. The decisive word is "expects." The rule is built on the physician's documented expectation at the time of the admission order, not on the actual length of stay.

Two patients with nearly identical clinical pictures can leave the hospital with different classifications, because one admitting physician documented a two-midnight expectation and one did not. The 2-Midnight Rule was designed to reduce subjective inpatient overbilling that triggered Recovery Audit Contractor takebacks. The operational result, well documented in MedPAC and OIG reports, is that hospitals classify defensively. Observation is the safe call. Patients pay the price.

The MOON notice and what it does not give the patient

In 2017, in response to congressional pressure, CMS implemented the Medicare Outpatient Observation Notice rule at 42 CFR 489.20(y), required by the NOTICE Act of 2015. Hospitals must deliver the MOON to any Medicare beneficiary on observation status for more than 24 hours, no later than 36 hours after observation services begin. The notice must be in writing, explained orally, and signed by the patient or a representative.

The MOON is informational. It tells the patient that they are on observation status, explains that observation is outpatient care under Part B, and warns that the stay will not count toward the 3-day qualifying inpatient stay required for SNF coverage. It does not trigger an appeal right on its own. It does not start a clock for a Quality Improvement Organization review. It does not require the hospital to reconsider. CMS was explicit on this in the 2016 final rule preamble at 81 Fed. Reg. 63143: the MOON is a notification, not a determination subject to standard Medicare appeal rights.

That distinction is what made Alexander v. Azar necessary. The longstanding HHS position was that a beneficiary placed on observation had no procedural right to appeal the classification, because no "initial determination" within the meaning of 42 CFR 405.924 had been made. The MOON told the patient what had happened. It did not give the patient a way to contest it.

The financial consequence

Observation status changes which part of Medicare pays, and that change moves real money. Under Part A, the inpatient hospital deductible is a single $1,676 per benefit period in 2026, covering the first 60 days. Under Part B, the patient pays the $257 annual Part B deductible, plus 20 percent coinsurance on each separately billed outpatient service, plus full retail for self-administered medications the hospital provides, which Part B does not cover.

The larger consequence is downstream. Medicare Part A covers up to 100 days of skilled nursing facility care per benefit period, the first 20 at no cost-sharing and days 21 through 100 at $209.50 daily coinsurance in 2026. The eligibility prerequisite, codified at 42 CFR 409.30, is a qualifying inpatient hospital stay of at least three consecutive days, not counting the day of discharge. Observation days do not count. A patient who spends four nights on observation then transfers to a SNF faces the full private-pay daily rate, which in most metropolitan markets runs $400 to $700 per day. Twenty days of rehab that would have cost zero under a properly classified inpatient stay can run $8,000 to $14,000 out of pocket. That gap is the single most-financially-damaging classification mistake in Medicare.

Exhibit 1: Inpatient versus observation cost comparison, three-night stay

The table below illustrates the cost difference for a hypothetical three-night hospital stay in calendar year 2026, assuming the patient has Original Medicare with no supplemental coverage. The Part B numbers are deliberately approximate because the exposure depends on the specific services billed.

| Cost element | Inpatient (Part A) | Observation (Part B) | |---|---|---| | Hospital deductible | $1,676 (Part A, per benefit period) | $257 (Part B annual, if not already met) | | Coinsurance on hospital services | $0 for days 1-60 | 20% of Medicare-allowed amount, per service | | Self-administered medications | Covered | Patient pays full retail | | Eligibility for Medicare-covered SNF rehab | Yes, if stay was 3 inpatient midnights | No | | Typical patient exposure, 3-night stay | roughly $1,676 | roughly $1,800 to $4,500, plus the SNF consequence |

Action title for designer: "Two patients in the same hospital bed for the same three nights can pay very different amounts. The line between inpatient and observation is a billing classification, not a clinical one."

The Alexander v. Azar history

The case began in 2011. Plaintiffs were Medicare beneficiaries hospitalized as observation outpatients who were then either denied SNF coverage or charged Part B cost-sharing for what they argued should have been inpatient care. They sued in Connecticut federal court, arguing that the absence of any administrative appeal process for observation classification violated the Fifth Amendment's Due Process Clause.

The case was certified as a nationwide class in 2017. After a six-day bench trial, the district court ruled for the plaintiffs in March 2020, holding that beneficiaries whose status had been changed by the hospital from inpatient to observation had a protected property interest in the inpatient classification and were entitled to an administrative appeal. The Second Circuit affirmed in January 2022 in Barrows v. Becerra, 24 F.4th 116. The Supreme Court denied certiorari later that year.

The remedy created two appeal paths. A prospective path applies to beneficiaries hospitalized on or after January 1, 2009, who have an inpatient order changed to observation by the hospital. A retrospective path applied to beneficiaries hospitalized before the remedy took effect. The retrospective window opened in early 2024 and closed on January 2, 2026. After that date, no further retrospective filings are accepted. The window is not reopening.

The prospective path remains open and is narrower than most patients hope. It applies only when the hospital itself changed the status from inpatient to observation. A patient classified as observation from the moment of the admission order, the typical Cleveland-stroke scenario, is not covered, because no inpatient order was ever entered to be changed.

The path that is still open

The single most useful action a family member can take, on the day they realize a Medicare patient has been placed on observation, is to ask the hospital to reconsider the status. This is not an appeal in the regulatory sense. It is a direct request to the attending physician, supported where possible by the patient's primary care physician, to revisit the 2-Midnight Rule analysis and enter an inpatient order.

The leverage point is documentation. Under 42 CFR 412.3, the inpatient determination turns on the admitting physician's reasonable expectation of care spanning at least two midnights. If the patient has already been in the hospital for more than one midnight, the actual stay is itself evidence supporting the expectation. If the clinical picture includes intravenous therapy, telemetry, neurological checks, post-procedure monitoring, or any sign of medical instability, the documentation will usually support inpatient status. Hospitals have processes for exactly this. Asking triggers the process.

The second path is the Quality Improvement Organization. QIOs are CMS-contracted regional organizations, currently Livanta and Kepro. A QIO will not ordinarily overturn an observation classification by itself, but it does have authority to review the medical necessity of a planned discharge under 42 CFR 405.1206, and that review can surface the observation-versus-inpatient question. The QIO route is most useful when the family is also concerned that the planned discharge is premature.

The third path is state law. A small number of states have enacted observation-status notification laws that go beyond the federal MOON. None creates an appeal right that overrides federal Medicare classification. They do create state-law causes of action for notice failures, which have occasionally produced negotiated reclassifications when the hospital's notice was untimely or incomplete.

Exhibit 2: The 3-day qualifier consequence

The skilled nursing facility coverage chain under Original Medicare is sequential. Breaking any link breaks the chain.

| Step | Requirement | Source | |---|---|---| | 1 | Patient is hospitalized as an inpatient | 42 CFR 409.30(a) | | 2 | Inpatient stay covers at least 3 consecutive days, not counting day of discharge | 42 CFR 409.30(a)(1) | | 3 | Patient is transferred to a Medicare-certified SNF | 42 CFR 409.30(b) | | 4 | Transfer occurs within 30 days of hospital discharge | 42 CFR 409.30(b)(1) | | 5 | SNF care is for a condition treated during the qualifying hospital stay | 42 CFR 409.31(b)(2) | | 6 | A physician certifies that daily skilled care is required | 42 CFR 409.31(a) |

Action title for designer: "Six steps to Medicare-covered skilled nursing care. Observation status breaks the chain at step 1, before any of the others matter."

Exhibit 3: State observation-status protections beyond federal Medicare

A handful of states have enacted notification or transparency requirements that supplement the federal MOON. The protections vary in scope. None substitutes for the federal Medicare inpatient determination.

| State | Statute or rule | Core protection | |---|---|---| | New York | NY Pub Health Law section 2803-w | Written notice within 24 hours, mandated content including SNF consequence | | Connecticut | Conn. Gen. Stat. section 19a-508c | Oral and written notice within 24 hours | | Maryland | Md. Health-Gen Code section 19-310.2 | Written notice within 24 hours, plain-language financial disclosure | | New Jersey | NJ Rev Stat section 26:2H-12.96 | Written notice within 24 hours of observation classification | | Pennsylvania | 28 Pa. Code section 103.22 | Notice of observation status with description of cost implications | | Virginia | Va. Code section 32.1-137.05 | Written notice within 24 hours, including SNF eligibility information |

Action title for designer: "Six states have layered observation-status notice rules on top of the federal MOON. None overrides the Medicare classification, but a notice failure under state law has occasionally produced reclassification at the hospital level."

The hospital's incentive structure

The Recovery Audit Contractor program, authorized under Section 302 of the Tax Relief and Health Care Act of 2006, pays contingent fees to private contractors who identify Medicare overpayments. Inappropriate inpatient admissions are a primary target. A successful RAC takeback recovers the Part A payment and replaces it, at most, with the lower Part B payment. The exposure runs in one direction for the hospital, so utilization-review teams err toward observation. The 2-Midnight Rule was CMS's attempt to set a clearer line, but the underlying incentive remains. Patients are not the audited party in this system. Hospitals are.

What makes this difficult in practice

The observation-status fight runs across three procedural regimes (hospital utilization review, the post-Alexander prospective appeal procedure for Original Medicare, and the Subpart M plan-level appeal process for Medicare Advantage), and each has its own correct demand letter, its own deadline, and its own evidentiary record. The 2-Midnight Rule at 42 CFR 412.3 turns on the physician's documented expectation at the time of the admission order, not on the actual length of stay; rebuilding that record from the chart after discharge is forensic work.

The mapped library Apellica has catalogued (more than two hundred carrier-by-denial-type cells, indexed at the bulletin level) each handle observation-related SNF denials differently in Medicare Advantage. The indexed Administrative Law Judge precedent library that covers Medicare Advantage Subpart M appeals includes the Alexander line and the post-2-Midnight-Rule decisions that have shaped review at Levels 3 and beyond. The retrospective Alexander window closed January 2, 2026 and is not reopening; the prospective path applies only when the hospital itself changed an inpatient order to observation. Picking the right remedy on the first letter is the difference between reclassification and a denied filing.

The window for change is short, often only while the patient is still in the bed. The family is often coordinating discharge logistics for a vulnerable relative at the same time.

Four nights in a hospital bed are four nights only when the chart says inpatient. The classification is a sentence the family was given, not a fact they were shown.

The work the desk does that a patient cannot

The desk maintains a structured intelligence file that tracks carrier behavior across more than two hundred carrier-by-denial-type combinations that tracks SNF coverage denials tied to observation status at every Medicare Advantage organization, and the indexed Administrative Law Judge precedent library including the Alexander and Barrows decisions. The desk knows which carriers have waived the 3-day rule as a plan benefit, which still enforce it via internal SNF prior-authorization gates, and which path (hospital reclassification, prospective Alexander procedure, Subpart M plan appeal) fits the specific facts.

Same-day reclassification request letters go out to the hospital attending physician and the utilization-review team, with the 42 CFR 412.3 cite and the documented-services analysis drawn from the medical record. Apellica's senior reviewers build the four-part evidence stack, plan-language or regulatory citation, clinical facts, peer-reviewed and CMS-policy evidence, regulatory hook (Subpart M, Alexander procedure, or 42 CFR 412.3, depending on the path), for every case. A senior reviewer reads every appeal before it goes out.

Initial review is free. There is no upfront fee. Families are not asked to pay anything until the carrier reverses the denial or the hospital reclassifies.

Original Medicare versus Medicare Advantage

The 3-day qualifying inpatient stay at 42 CFR 409.30 is a feature of Original Medicare. Medicare Advantage plans, regulated under 42 CFR Part 422, are not bound to it and many have waived it as a plan benefit. The complication is that Medicare Advantage plans run their own prior-authorization processes for SNF admissions, and those processes routinely deny or limit coverage on grounds that have nothing to do with the federal 3-day rule. A Medicare Advantage patient who spent four nights on observation may not face the 3-day barrier but will face a separate plan-level medical-necessity review, with its own appeal mechanics under 42 CFR Part 422, Subpart M.

The Alexander v. Azar litigation applies to Original Medicare beneficiaries, not to Medicare Advantage enrollees. A Medicare Advantage patient placed on observation cannot use the Alexander mechanism. The available recourse runs through the plan's internal appeal and, if upheld, the Independent Review Entity, then the Office of Medicare Hearings and Appeals. The wrong remedy filed against the wrong entity will be dismissed without reaching the merits.

Where to ask for help

The Center for Medicare Advocacy, at medicareadvocacy.org, served as lead counsel for the plaintiff class in Alexander v. Azar and remains the most knowledgeable source in the country on observation-status issues. The Medicare Rights Center, at medicarerights.org, runs a national consumer hotline at 800-333-4114. The State Health Insurance Assistance Program, the SHIP network at shiphelp.org, has trained counselors in every state who help with Medicare appeals at no cost. The National Senior Citizens Law Center, NSCLC at nsclc.org, advocates on systemic Medicare issues and publishes case-level resources on observation-status disputes. The QIO for each region can be reached through 1-800-MEDICARE. Apellica, at apellica.com, prepares evidence-based appeal letters for Medicare classification and coverage disputes in all 50 states.

What to do if you or a family member is on observation status right now

The classification is much easier to change while the patient is still in the bed. The retrospective Alexander window is closed and is not reopening. The prospective path is real but narrow.

Most families leave coverage on the table because the reclassification or Subpart M appeal is more procedural work than they can take on while managing a hospitalization.

The Cleveland family received the MOON on day two and signed it without reading it. The retrospective Alexander window had already closed five weeks earlier. The roughly $12,000 in rehab coverage the family lost is not recoverable. The path that remains starts the next time, before discharge.

What the engagement looks like

Apellica prepares the evidence-based appeal letter for Medicare and Medicare Advantage classification and coverage disputes, including observation-status reclassification requests and skilled nursing facility coverage appeals at every level of the Subpart M process. The patient or family member reviews and approves every word before submission and authorizes carrier communications under a HIPAA-compliant Assignment of Benefits. We are not a law firm. We are not a medical provider. We are not an insurance carrier. We are an independent administrative service that turns a contested classification into a properly documented appeal letter.

Our model is $0 upfront and a flat fee on successful recovery. If the appeal does not reverse, the patient owes nothing. Coverage extends to all 50 states. A senior reviewer reads every case before it goes out.

About the author

Apellica is an independent appeal-preparation service for patients facing health-insurance denials. Mark Henderson is one of the senior reviewers on the desk. The firm operates from One World Trade Center in lower Manhattan and serves patients in all fifty states. Apellica is not a law firm and does not give legal advice. Reach the office at press@apellica.com, +1 (888) 777-6120, or apellica.com.

References

• 42 CFR 412.3. Admissions (the 2-Midnight Rule).
• 42 CFR 409.30. Conditions for coverage of post-hospital SNF care.
• 42 CFR 409.31. Level of care requirement.
• 42 CFR 489.20(y). Required notification of observation status (MOON).
• 42 CFR 405.924. Actions that are initial determinations.
• 42 CFR 405.1206. Expedited determinations on coverage of provider services.
• 42 CFR Part 422, Subpart M. Medicare Advantage grievances and appeals.
• Alexander v. Azar, 613 F. Supp. 3d 559 (D. Conn. 2020).
• Barrows v. Becerra, 24 F.4th 116 (2d Cir. 2022).
• Notice of Observation Treatment and Implication for Care Eligibility Act (NOTICE Act), Pub. L. 114-42 (2015).
• 81 Fed. Reg. 63143 (September 14, 2016), MOON final rule preamble.
• Medicare Payment Advisory Commission, Reports to Congress on hospital short-stay policy.
• HHS Office of Inspector General reports on the 2-Midnight Rule and observation status.
• Center for Medicare Advocacy. medicareadvocacy.org.
• Medicare Rights Center. medicarerights.org.
• State Health Insurance Assistance Program (SHIP) national directory. shiphelp.org.
• National Senior Citizens Law Center. nsclc.org.
• NY Pub Health Law section 2803-w (New York observation notice).
• Conn. Gen. Stat. section 19a-508c (Connecticut observation notice).
• Md. Health-Gen Code section 19-310.2 (Maryland observation notice).
• NJ Rev Stat section 26:2H-12.96 (New Jersey observation notice).
• 28 Pa. Code section 103.22 (Pennsylvania hospital licensure standard).
• Va. Code section 32.1-137.05 (Virginia observation notice).