When patients arrive at the emergency department, one of the most important questions a provider must answer is deceptively simple: What level of care is appropriate?This question, though routine, shapes patient outcomes, reimbursement accuracy, and the overall efficiency of hospital operations. A recent educational symposium explored this very topic, focusing on the art and science of observation care, that often-misunderstood middle ground between emergency treatment and inpatient admission.
Understanding the Gray Zone of Care
Observation care serves patients whose conditions are too complex to send home but not severe enough to justify an inpatient stay. These patients need close monitoring, continued treatment, and re-evaluation before a decision is made discharge or admission.
The key, as emphasized in the session, is medical necessity supported by evidence-based documentation. The determination of a patient’s level of care isn’t simply about time spent; it’s about the clinical reasoning behind that time.
“It’s not enough to say a patient might need extended care,” the presenter explained. “Your notes must clearly show why continued observation is medically necessary.”
This clarity is essential both for patient safety and accurate reimbursement.
The Role of the “Two Midnight” Rule
The widely discussed “Two Midnight Rule,” established by the Centers for Medicare and Medicaid Services (CMS), provides a framework for determining inpatient versus observation status.
In short:
- If a provider expects care to span two or more midnights, inpatient admission is justified.
- If the expected stay is shorter, the patient should remain under observation care, billed as outpatient.
This distinction might sound bureaucratic, but it directly affects patient costs, hospital payment, and regulatory compliance.A participant in the symposium noted how transfer delays often complicate the process. The presenter responded with a reassuring reminder: when circumstances such as transportation issues or unavailable beds extend the patient’s stay beyond what’s typical, detailed documentation is the provider’s best protection.
Case Example: When Care Coordination Meets Clinical Judgment
A community hospital shared a real-world example. A patient with pneumonia arrived in the emergency department late in the evening. Clinicians anticipated discharge within a day but decided on observation due to oxygen needs. When transfer arrangements were delayed, the patient’s stay extended past 24 hours.
Because the care team meticulously documented each reassessment, vital signs, treatment adjustments, and the rationale for continued observation, the hospital avoided compliance issues. More importantly, the patient received appropriate care without unnecessary transfer.
Building Strong Observation Programs
Observation care works best when guided by structure, not improvisation. Key success factors include:
1. Established Policies and Protocols
- Clearly define when observation care is appropriate and what documentation is required.
2. Collaborative Decision-Making
- Physicians, advanced practice providers, and nurses should align criteria and communication.
3. Regular Reassessment
- Set clear expectations for progress notes, typically every two to four hours, based on patient condition.
4. Evidence-Based Care Pathways
- Use standardized tools and scoring systems such as:
- HEART Score for chest pain
- Pediatric Asthma Severity Scores for respiratory distress
- Dehydration or infection protocols from trusted sources like Johns Hopkins, NIH, or the American College of Emergency Physicians
These pathways ensure consistency, improve outcomes, and streamline staff decision-making.
Designing the Observation Unit
The session also explored different observation unit models, each with benefits and tradeoffs:
- Scattered Units – Flexible but harder to standardize care.
- Open Units – Dedicated space improves efficiency but requires resources.
- Closed Units – Structured, protocol-driven care in a designated area, ideal for standardization.
- Virtual Units – Care delivered anywhere in the facility using shared protocols, cost-effective and efficient, especially when resources are limited.
The “virtual unit” model, where nurses initiate evidence-based care protocols under physician oversight, was highlighted as an emerging best practice, allowing care to begin quickly without overwhelming staff.
Actionable Insights for Healthcare Leaders
1. Document Clinical Reasoning, Not Just Time.
- Show why ongoing observation is needed and what outcomes you’re monitoring.
2. Establish Observation Protocols.
- Start with common conditions, chest pain, asthma, dehydration and adapt evidence-based tools.
3. Engage Medical Staff Leadership.
- Align nursing and provider documentation expectations. Policies must balance compliance and workflow realities.
4. Track and Evaluate Efficiency.
- Review observation stays that exceed 24 hours and identify causes, are they patient-related, systemic, or documentation-driven?
5. Standardize Communication.
- Build structured handoffs and interdisciplinary huddles to minimize confusion during transitions.
Closing Thought
Observation care is more than a billing category; it’s a strategic bridge between acute and inpatient services. When guided by strong protocols, consistent communication, and clear documentation, it enhances both clinical outcomes and operational performance.
Ultimately, getting observation care right means delivering the right care, in the right place, for the right amount of time.