1.2 Health Delivery System Case Management and Practice Standards
Key Takeaways
Health Delivery System Case Management focuses on acute episode progression, medical necessity, bed throughput, and safe community reintegration, contrasting sharply with longitudinal, cost-containment-driven payer models.
ACMA's Case Management Functions and Expectations, endorsed by NBCM in the ACM Code of Conduct, group hospital case management into education, care coordination, compliance, transition management, and utilization management.
In a dyad model, the RN case manager usually leads clinical progression, utilization review, and clinical post-acute matching, while the social worker leads complex psychosocial, legal, and protective-services work.
ACMA's expectations of the individual case manager are accountability, professionalism, collaboration, care coordination, advocacy, and resource management.
Structured interprofessional rounding and standardized communication tools like SBAR are essential for mitigating avoidable delays and aligning care teams around discharge milestones.
Health Delivery System Case Management and Practice Standards
Case management within modern healthcare delivery systems is a specialized, interdisciplinary clinical practice. As ACMA describes it, health delivery system case management is structured around a central premise: high-quality healthcare requires active coordination, clinical resource stewardship, and patient advocacy at every stage of the acute hospitalization. To succeed on the ACM-RN examination, registered nurses must understand the philosophical distinction between hospital-based case management and payer-based managed care, know ACMA's practice framework, and understand the collaborative dynamics of the RN-MSW Dyad Model.
Philosophy and Scope: Health Delivery System vs. Payer Case Management
Case management models vary significantly based on the operating environment. A fundamental concept is the operational distinction between Health Delivery System Case Management (provider-based) and Payer/Commercial Case Management (insurer-based).
| Practice Dimension | Health Delivery System Case Management | Payer / Commercial Case Management |
|---|---|---|
| Primary Setting | Acute care hospitals, health systems, emergency departments, inpatient rehab facilities (IRFs). | Health insurance plans, commercial managed care organizations (MCOs), third-party administrators (TPAs). |
| Relationship Duration | Episodic and acute; typically spans from emergency presentation to 30 days post-discharge. | Longitudinal and chronic; often spans full benefit policy years or continuous insurance enrollment. |
| Primary Clinical Focus | Inpatient progression of care, bed capacity/throughput, medical necessity, discharge transition safety. | Health maintenance, disease management adherence, preventive wellness, closing gaps in preventive care. |
| Utilization Management | Daily concurrent clinical review using InterQual/MCG; defending billing status (Inpatient vs. Observation). | Pre-service authorization, concurrent review audits, network steerage, retrospective claims denial management. |
| Resource Allocation | Mobilizing acute hospital ancillary services, coordinating post-acute level of care (SNF, IRF, LTACH, Home Health). | Authorizing covered benefit packages, managing out-of-network exceptions, monitoring annual policy caps. |
| Core Metrics | Length of Stay (LOS), Geometric Mean LOS (GMLOS), 30-day readmissions, excess bed days, HCAHPS scores. | Medical Loss Ratio (MLR), emergency department visit frequency, generic drug fill rates, total cost of care. |
In the health delivery system model, the registered nurse case manager operates directly at the point of care, collaborating with attending physicians, bedside staff, physical therapists, and consulting specialists. The case manager ensures that every day the patient spends in an acute inpatient bed meets medical necessity criteria, that diagnostic evaluations occur without delay, and that transition barriers are resolved before discharge.
ACMA's Practice Framework
ACMA publishes Standards of Practice & Scope of Services for health care delivery system case management and transitions-of-care professionals (originally 2004, most recently revised in 2020). For the ACM, the most directly relevant document is ACMA's Case Management Functions and Expectations. NBCM endorses it in the ACM Code of Conduct and says its categories give context to the ACM testing domains. It also defines case management as a collaborative practice model that facilitates care along a continuum through effective resource coordination, with goals of optimal health, access to care, and appropriate use of resources, balanced with the patient's right to self-determination.
| ACMA function | What ACMA expects case management to do |
|---|---|
| Education | Make sure disease education has been given; give the team and the patient or family information on resources and benefits for acute and post-acute services that ensures patient choice; address learning needs that affect care or reimbursement. |
| Care coordination | Screen all patients and stratify those needing case management (screening/identification); use a defined assessment tool; ensure the plan of care fits needs, patient choice, and resources; sequence consults, tests, and procedures; and communicate in a way that adds to, rather than duplicates, other documentation. |
| Compliance | Know and meet federal, state, local, hospital, and accreditation requirements; structure the department to meet the CMS Conditions of Participation; practice within each discipline's licensed scope. |
| Transition management | Start transition planning at the first encounter; identify patients with post-acute needs and readmission risk; know community partners and give information for informed choice; implement and communicate the plan; and contact the patient or family within 72 hours to validate the plan. |
| Utilization management | Ensure the right status and level of care, with a method for secondary physician review; manage the payer interface; track avoidable delays and days with a defined method; prevent and support appeals of medical necessity denials. |
ACMA's expectations of the individual case manager are accountability, professionalism, collaboration, care coordination, advocacy, and resource management. Advocacy, for example, includes identifying the legal decision maker, promoting self-determination and culturally competent care, making sure suspected abuse, neglect, or exploitation is referred, using the ethics committee when needed, and promoting advance directives.
The Interdisciplinary Dyad Model
Many hospitals use a Dyad Model: a collaborative partnership pairing a Registered Nurse Case Manager (RN-CM) with a social worker (often a master's-prepared MSW). The ACM itself reflects this design, with one certification program and separate RN and social work credentials. Rather than duplicating efforts or operating in silos, the RN-CM and MSW share accountability for a patient cohort, dividing responsibilities based on professional licensure, education, and clinical focus.
THE INTERDISCIPLINARY DYAD MODEL
┌──────────────────────────────────────────────────────────────┐
│ Shared Cohort Assessment │
│ • Daily Interprofessional Rounds (IPR) │
│ • Discharge Barrier Identification & Mitigation │
│ • Patient & Family Transition Counseling │
└──────────────────────────────┬───────────────────────────────┘
│
┌─────────────────────────┴─────────────────────────┐
▼ ▼
┌───────────────────────────────────┐ ┌───────────────────────────────────┐
│ RN Case Manager (RN-CM) │ │ Medical Social Worker (MSW) │
│ • Clinical progression & milestones│ │ • Complex psychosocial crises │
│ • Medical necessity & UR review │ │ • Trauma-informed counseling │
│ • Physician Advisor peer-to-peer │ │ • Financial toxicity & Medicaid │
│ • Clinical post-acute vetting │ │ • Community safety net linkage │
│ (IV infusions, wound VAC, vent) │ │ • Guardianship & surrogate issues │
│ • Medication reconciliation & DME │ │ • Mandatory reporting (APS / CPS) │
└───────────────────────────────────┘ └───────────────────────────────────┘
Distinct Scope of the RN Case Manager
- Clinical Progression Management: Monitors clinical milestones (e.g., weaning supplemental oxygen, transitioning from IV to oral antibiotics, tolerating oral nutrition) to ensure care progresses along evidence-based clinical pathways.
- Utilization Review and Medical Necessity: Conducts admission and daily concurrent reviews using clinical criteria sets (InterQual or MCG). Determines whether documentation supports inpatient admission or outpatient observation status under CMS rules, and prepares clinical appeals when commercial payers issue concurrent denials.
- Physician Advisor Collaboration: Partners with physician advisors to navigate peer-to-peer reviews, resolve clinical documentation ambiguities, and execute Condition Code 44 conversions when necessary.
- Complex Clinical Post-Acute Vetting: Evaluates clinical eligibility for specialized post-acute care, such as Inpatient Rehabilitation Facilities (IRF 3-hour therapy rule), Long-Term Acute Care Hospitals (LTACH ventilator/wound criteria), home intravenous infusion therapy, total parenteral nutrition (TPN), and specialized durable medical equipment (DME).
Distinct Scope of the Medical Social Worker
- Psychosocial and Crisis Assessment: Assesses the psychological impact of catastrophic, acute, or chronic illness on the patient and family system; provides supportive crisis intervention and bereavement counseling.
- Social Safety Net and Financial Navigation: Identifies uninsured or underinsured patients and initiates applications for state Medicaid, Supplemental Security Income (SSI), Social Security Disability Insurance (SSDI), hospital charity care, and copay assistance programs.
- Ethical, Legal, and Surrogate Complexities: Resolves surrogate decision-maker disputes, navigates advance directive conflicts, assesses domestic violence risks, and works with legal counsel on guardianship petitions when an unrepresented patient lacks decisional capacity.
- Vulnerable Adult Protection and Placement: Assesses and reports suspected elder abuse, neglect, self-neglect, or exploitation to Adult Protective Services (APS); coordinates emergency shelter placement for homeless individuals.
Clinical Vignette: The Dyad in Practice
Scenario: Mr. Alvarez, a 71-year-old widower, is admitted with an acute middle cerebral artery ischemic stroke resulting in right-sided hemiparesis and severe dysphagia requiring a percutaneous endoscopic gastrostomy (PEG) tube. He has Medicare Part A and B but no supplemental Medigap coverage. He lives alone in a two-story home, and his adult daughter lives 300 miles away.
RN Case Manager Interventions:
- Assesses clinical progression, tracking swallowing rehabilitation and physical therapy mobility scores.
- Applies InterQual criteria to confirm inpatient medical necessity.
- Vets post-acute clinical eligibility: determines Mr. Alvarez meets criteria for an Inpatient Rehabilitation Facility (IRF) requiring at least 3 hours of intensive therapy per day and active physician management.
- Arranges enterostomy feeding supplies, enteral formula delivery, and specialized DME (hospital bed, wheelchair) for transition.
Medical Social Worker Interventions:
- Conducts a psychosocial family conference with the patient and his out-of-town daughter to assess support availability and caregiver strain.
- Evaluates financial exposure: without Medigap, Mr. Alvarez would owe daily SNF coinsurance after day 20 if he later needs a SNF, and 20% coinsurance for outpatient services; screens him for Medicaid or a Medicare Savings Program.
- Coordinates community safety net resources, including Meals on Wheels and local aging agency support for when he eventually transitions home from rehabilitation.
The Case Management Process in Daily Practice
Whatever framework a hospital uses, the daily work follows a recognizable cycle that matches the ACM outline:
- Screening and identification: Review new patients against the hospital's defined criteria for clinical, psychosocial, financial, and operational risk. CMS requires identification "at an early stage of hospitalization"; the exact timeline is hospital policy.
- Assessment: Gather biopsychosocial, functional, cognitive, and financial data from the patient, family, records, and team (Domain 1).
- Planning: Build a patient-centered plan of care with measurable goals that reflects patient choice and available resources.
- Coordination and sequencing: Arrange tests, consults, procedures, and post-acute referrals in a sensible order and escalate barriers.
- Evaluation and re-evaluation: Measure progress against milestones and the expected discharge date, re-review level of care, and change the plan when the situation changes.
- Advocacy throughout: Protect self-determination and safety, including when throughput or payer pressure pushes toward an unsafe discharge.
Interdisciplinary Team Communication and Leadership
The registered nurse case manager serves as the central hub of hospital interdisciplinary communication. Fragmented communication is a leading contributor to delayed discharges, medical errors, and unplanned readmissions.
Daily Interprofessional Rounds (IPR)
Also known as Multidisciplinary Rounds (MDR), daily interprofessional rounds bring together the attending physician, RN case manager, MSW, bedside nurse, staff pharmacist, and physical therapist. High-performing rounds commonly use these practices:
- Timing: Conducted daily at a fixed morning hour, spending 60 to 90 seconds per patient.
- Focus: Centered on the Target Discharge Date (TDD), outstanding clinical milestones, transition barriers, and medical necessity level of care.
- Accountability: Each team member leaves rounds with clear ownership of specific action items (e.g., pharmacist completes medication reconciliation; PT finishes mobility evaluation; RN-CM verifies home infusion insurance authorization).
The SBAR Communication Framework
When escalating transition delays or communicating clinical status changes to physicians, payers, or post-acute providers, case managers utilize the standardized SBAR framework:
- Situation: Immediate statement of the clinical or transition issue (e.g., "Patient in bed 412 has completed IV antibiotics and is clinically ready for discharge, but lacks home oxygen delivery.")
- Background: Relevant clinical context and payer details (e.g., "72-year-old with severe COPD exacerbation; resting room-air PaO2 is 54 mmHg, qualifying for Medicare Part B DME coverage.")
- Assessment: Case manager's appraisal of the bottleneck (e.g., "The supplier has the qualifying test result, but the standard written order for oxygen is still unsigned, so they cannot deliver.")
- Recommendation: Concrete, actionable request (e.g., "I need Dr. Vance to sign the oxygen order in the EHR before noon so the concentrator can be delivered to the home today.")
In an acute care hospital using an RN–social worker dyad, an older patient with diabetic foot osteomyelitis needs 6 weeks of outpatient IV antibiotics and wound VAC dressings, plus urgent help with a Medicaid application and a utility shut-off notice. How should these responsibilities usually be divided?
The social worker coordinates the home IV infusion and wound VAC, while the RN case manager completes the Medicaid application and utility hardship programs
The RN case manager handles every clinical and financial task alone and calls the social worker only if a psychiatric crisis develops
The RN case manager handles the infusion agency, VAC orders, and PICC teaching; the social worker leads the Medicaid and utility work
Both professionals attend every patient interaction together and document the same assessment so neither misses a detail
How does the focus of health delivery system case management differ from that of payer-based case management?
Hospital case management is mainly telephonic and non-clinical, whereas payer case managers provide hands-on bedside care and assist with procedures
Hospital case managers report to CMS and enforce Medicare policy, whereas payer case managers report to state boards and enforce nursing practice acts
Hospital case management centers on the acute episode, medical necessity review, and transition safety; payer case management on benefits and costs over time
Hospital case management is limited to billing audits, whereas payer case managers write and manage the clinical orders for members
In ACMA's Case Management Functions and Expectations, which care coordination component calls for case management to review all patients for clinical, psychosocial, financial, and operational factors and to stratify those who need case management services?
Sequencing of consults and tests
Screening and identification
Payer interface
Post-discharge follow-up
Sections you finish are checked off in the contents.