Skilled Nursing Facilities (SNFs) participating in Medicare are subject to routine claim reviews to ensure that services billed to the Medicare program meet coverage requirements and are supported by appropriate clinical documentation. One of the most common review mechanisms used by Medicare Administrative Contractors (MACs) is the Additional Documentation Request (ADR).
When a Skilled Nursing Facility receives a medical necessity ADR from CGS Administrators, it means that Medicare is requesting supporting documentation for specific claims to determine whether the services provided meet Medicare coverage criteria. CGS is one of the MACs responsible for administering Medicare Part A and Part B claims processing and conducting medical reviews for providers within its jurisdiction.
Understanding the ADR process and preparing an accurate response is essential for SNF operators seeking to avoid claim denials, repayment demands, and additional regulatory scrutiny.
What Is a CGS Additional Documentation Request (ADR)?
An Additional Documentation Request (ADR) is part of Medicare’s medical review process. When CGS issues an ADR, the contractor is requesting medical records and supporting documentation for specific claims to verify that the services billed comply with Medicare coverage policies.
The ADR review process helps Medicare determine whether:
• services were medically necessary
• documentation supports the level of care billed
• services meet skilled nursing coverage requirements
• claims were billed accurately
ADRs may occur as part of either pre-payment reviews or post-payment audits.
During a pre-payment review, Medicare withholds payment until documentation is reviewed. During a post-payment review, claims have already been paid and documentation is requested to confirm that payment was appropriate.
Why SNF Claims Are Selected for ADR Review
Skilled Nursing Facility claims are frequently reviewed because Medicare coverage for SNF services requires strict clinical criteria. Not all residents in a skilled nursing facility qualify for Medicare-covered skilled care.
Medicare Part A covers SNF services only when specific conditions are met, including:
• the patient requires daily skilled nursing or therapy services
• the services are medically necessary for treatment of the patient’s condition
• services must be provided by or under supervision of skilled professionals
• the patient must have a qualifying hospital stay prior to admission
If documentation does not clearly demonstrate that these conditions were met, Medicare may deny reimbursement.
Common Triggers for SNF ADR Reviews
Several factors may cause SNF claims to be selected for ADR review.
High Utilization of Skilled Therapy Services
Claims involving intensive physical therapy, occupational therapy, or speech therapy may be reviewed to ensure services were medically necessary.
Long Lengths of Stay
Patients who remain in skilled care for extended periods may trigger review if documentation does not support ongoing skilled services.
Billing Patterns Outside Regional Norms
Medicare data analytics systems monitor provider billing patterns. Facilities whose billing patterns differ significantly from peers may be flagged.
Prior Claim Denials
Facilities with a history of documentation deficiencies or claim denials may experience additional reviews.
Random Claim Sampling
Some ADRs are generated through random sampling to monitor overall program compliance.
What Information Is Included in a CGS ADR Letter
When CGS issues an ADR, the facility receives a written request identifying the claims selected for review.
The ADR letter typically includes:
• claim numbers and dates of service
• beneficiary identifiers
• type of services billed
• instructions for submitting documentation
• submission deadline
Medicare generally allows providers 45 days to submit requested documentation.
Failure to respond within this timeframe usually results in automatic claim denial.
Required Documentation for SNF Medical Necessity Reviews
Skilled Nursing Facilities must submit documentation that clearly supports the need for skilled care.
Important documentation typically includes:
Physician Orders
Physician documentation must demonstrate that skilled nursing or therapy services were ordered and medically necessary.
Admission Assessments
Initial assessments must show the patient’s medical condition and need for skilled services.
Skilled Nursing Notes
Daily or periodic nursing documentation should demonstrate that services required the skills of licensed nursing staff.
Therapy Evaluations and Progress Notes
Physical therapy, occupational therapy, or speech therapy documentation must include:
• therapy evaluations
• treatment plans
• measurable goals
• progress toward goals
Minimum Data Set (MDS) Assessments
The MDS assessment supports the clinical picture of the resident’s condition and level of care required.
Care Plans
Care plans should demonstrate that services provided align with patient needs and physician orders.
Incomplete or vague documentation is one of the most common reasons SNF claims are denied during ADR reviews.
Common Documentation Issues Identified in SNF ADR Reviews
Medical reviewers frequently identify similar documentation deficiencies in SNF claims.
Common issues include:
• documentation that does not demonstrate daily skilled services
• therapy services without measurable progress
• physician documentation that does not support skilled care
• nursing notes lacking clinical detail
• therapy notes that repeat identical language across visits
Documentation must clearly demonstrate the clinical need for skilled care, not simply the presence of routine custodial services.
Possible Outcomes of a CGS ADR Review
Once CGS reviews the documentation submitted, several outcomes are possible.
Claim Approval
If documentation supports the services billed, the claim will be approved and payment will be issued or maintained.
Claim Denial
If documentation does not support medical necessity, the claim may be denied.
Partial Payment
Reviewers may determine that only part of the services billed meet coverage requirements.
Overpayment Determination
If the claim was already paid and documentation does not support the services billed, Medicare may request repayment.
Appealing ADR Denials
SNFs have the right to appeal denied claims through the Medicare appeals process.
The first level of appeal is redetermination, which involves a review by the Medicare Administrative Contractor.
Providers may submit additional documentation or explanations demonstrating that the services were medically necessary.
Appeals may proceed through multiple levels if necessary.
Successful appeals typically rely on clear clinical documentation that supports the skilled services provided.
Best Practices for Responding to SNF ADR Requests
Facilities should implement structured processes when responding to ADR requests.
Recommended steps include:
Review the ADR Carefully
Facilities should confirm exactly which claims and documentation are being requested.
Conduct Internal Record Reviews
Before submitting documentation, clinical staff should verify that records support the services billed.
Organize Documentation Clearly
Records should be submitted in chronological order and labeled clearly to assist reviewers.
Submit Documentation Before the Deadline
Meeting submission deadlines is essential to prevent automatic denials.
Facilities should also maintain copies of all documentation submitted to Medicare.
Compliance Strategies for Skilled Nursing Facilities
Strong compliance programs help SNFs reduce the risk of ADR denials.
Key strategies include:
Clinical Documentation Improvement Programs
Programs designed to improve clinical documentation help ensure that records support skilled services.
Internal Chart Audits
Routine audits of patient records help identify documentation gaps.
Staff Training
Clinical staff should receive training on Medicare coverage requirements and documentation standards.
Billing Pattern Monitoring
Facilities should monitor internal billing patterns to identify unusual trends that may trigger reviews.
Effective compliance programs help SNFs maintain regulatory readiness.
Compliance Consulting and ADR Response Support
Healthcare providers facing Medicare ADR reviews often benefit from specialized compliance support.
Consulting organizations such as HealthBridge assist skilled nursing facilities with Medicare audit preparation, documentation reviews, and ADR response strategies.
Consulting services may include:
• ADR response preparation
• skilled nursing documentation audits
• compliance program development
• staff training and coding education
• internal billing reviews
Facilities seeking assistance with Medicare compliance and audit preparation can learn more at:
https://www.myhbconsulting.com
HealthBridge supports healthcare providers in strengthening compliance systems and navigating complex Medicare medical review processes.
References
https://www.cgsmedicare.com/parta/medicalreview/adr.html
https://www.cms.gov/medicare/medicare-fee-for-service-payment/medicalreview
https://www.cms.gov/files/document/medicare-benefit-policy-manual-chapter-8-skilled-nursing-facility-services.pdf
