Key Takeaways

• CMS now audits all 550 eligible Medicare Advantage contracts annually (up from 60).
• 72% of sampled HCCs in recent audits lacked proper documentation support.
• CMS projects $4.7 billion in recoupments over 10 years through RADV extrapolation.
• Proactive CDI programs can achieve >98% accuracy while improving RAF scores by up to 40%.
• Organizations with strong documentation practices reduce RADV recoupment risk by identifying gaps before CMS does.

Introduction

The Centers for Medicare & Medicaid Services (CMS) scaled Risk Adjustment Data Validation (RADV) audits from approximately 60 Medicare Advantage contracts per year to all 550 eligible contracts annually. They've expanded their coding workforce from 40 to 2,000 coders and increased the number of medical records reviewed per plan from 35 to 200.

The financial stakes are significant. CMS projects $4.7 billion in recoupments over the next decade through RADV extrapolation. Recent Office of Inspector General (OIG) audits identified over $800 million in estimated Medicare Advantage overpayments, with a troubling finding: 72% of sampled Hierarchical Condition Categories (HCCs) lacked proper medical record support.

For Medicare Advantage plans, the question is no longer whether you'll face a RADV audit, but when and how prepared you'll be.

Where MA Plans Fail RADV Audits

Insufficient Documentation

The most frequent RADV audit failure stems from medical records that don't adequately support the diagnosis codes submitted for risk adjustment. A diagnosis of diabetes with complications requires documentation showing the specific complication and its active management.

Incomplete MEAT Criteria

Medicare requires that chronic conditions meet MEAT criteria (Monitor, Evaluate, Assess, Treat) to justify risk adjustment payments. Many providers document a condition in the problem list but fail to demonstrate active management during the encounter.

This is where Clinical Documentation Improvement (CDI) programs become essential, helping ensure clinical documents clearly document MEAT criteria elements.

Coding Specificity and Supporting Evidence

Using unspecified diagnosis codes when medical records support more specific codes creates audit vulnerability. Additionally, conditions like congestive heart failure require objective clinical evidence (labs, imaging, functional assessments) documented in the record.

Professional medical coding services that maintain up to 98% accuracy help ensure codes match documentation specificity from the start.

Proactive RADV Preparation Strategies

Organizations treating RADV preparation as an ongoing operational priority achieve significantly better outcomes.

Conduct Internal Retrospective Reviews

Audit your own medical records before CMS does. Sample charts across high-risk HCC categories and evaluate whether documentation would withstand RADV scrutiny. Regular internal audits using experienced medical coding teams help identify vulnerabilities before they become costly findings.

Implement Comprehensive CDI Programs

Clinical Documentation Improvement specialists bridge the gap between clinical care and compliant documentation. For close to 8 years, we've helped healthcare organizations strengthen their documentation and coding processes. Our CDI services maintain more than 98% accuracy while identifying documentation gaps before they become audit liabilities.

Establish Real-Time Coding Validation

Rather than discovering coding issues during an audit, implement concurrent review processes that catch and correct documentation gaps while encounters are still fresh. Organizations working with experienced HCC coding specialists benefit from ongoing education that improves provider documentation quality over time.

Create Documentation Improvement Workflows

Systematic approaches to documentation quality yield better results than ad hoc interventions. These workflows integrate naturally with comprehensive revenue cycle management services that address documentation quality as a core operational function.

Defense Strategies When Audited

Establish Rapid Response Protocols

Designate a RADV response team before an audit notice arrives. This team should include clinical documentation specialists, certified coders, compliance officers, and legal counsel.

Organize Medical Records Systematically

RADV audits request specific encounters for specific beneficiaries. Ensure your medical record retrieval process can quickly locate complete records, including supporting documentation that might be stored in different systems.

Many organizations integrate audit response with comprehensive medical billing services that maintain systematic documentation organization as part of standard operations.

Prepare Robust Appeals

When audit findings propose recoupments, detailed appeals with additional supporting documentation can overturn unfavorable determinations. Organizations that maintain strong claims and adjudication processes throughout the year are better positioned to respond effectively.

Our medical coding team achieves up to 99% accuracy by combining certified expertise with AI-assisted technology, providing the precision that audit response requires.

How HOM Supports RADV Preparation

For close to 8 years, we've helped healthcare payers and providers navigate the complexities of risk adjustment coding and documentation. Our approach combines clinical expertise with technology to deliver measurable improvements in both audit readiness and revenue optimization.

Our RADV Support Services

• Clinical Documentation Improvement: Our CDI specialists ensure medical records meet RADV documentation standards while capturing all clinically appropriate HCC codes, maintaining more than 98% accuracy.
• HCC Coding Excellence: With up to 99% accuracy in HCC/HHS coding, we help ensure submitted codes are both clinically appropriate and properly supported by documentation.
• Comprehensive Medical Coding: Our medical coding services cover 15+ specialties with 48-72 hour turnaround times, helping maintain coding accuracy throughout the year.
• AI-Assisted Reviews: We use AI-assisted (human-in-the-loop) technology to efficiently review large volumes of medical records, identifying documentation gaps and HCC opportunities.

Case Study: Turning Audit Risk Into RAF Opportunity

The Challenge

A payor with over 15,000 lives needed assurance that member charts would withstand RADV scrutiny while capturing all legitimate HCC codes supported by documentation.

The Approach

We conducted a comprehensive CDI review of their population, examining encounters and lab reports while reviewing progress notes of nearly 15,000 charts. The review used AI-assisted technology with human clinical expertise in the loop.

The Results

Accuracy Achievement: More than 98% accuracy in coding and documentation was achieved, significantly reducing RADV audit risk.

RAF Optimization: A 40% increase in MRA Risk scores was realized as the transition from ICD-10-CM version 24 to version 28 was properly documented and coded.

Revenue Impact:

• 1,100 new HCCs identified, leading to better MRA scores
• Over 2,200 instances of retro billing opportunities discovered
• More than 1,100 deletion diagnoses undertaken, improving EMR data quality

This proactive approach prepared the organization for RADV audits while optimizing legitimate revenue capture through identifying previously missed HCC opportunities that were clinically appropriate and well-documented.

The Bottom Line: Preparation Costs Less Than Recoupment

With audit activity surging 30% in late 2025 and CMS possessing the infrastructure to audit all Medicare Advantage contracts, reactive approaches to RADV compliance are no longer viable.

Organizations that will thrive in this new enforcement environment treat RADV preparation as a core operational competency. This means investing in clinical documentation improvement, ensuring coding accuracy, conducting internal audits, and building systems that create defensible documentation from the start.

The financial math is straightforward: investing in documentation quality and proactive preparation costs significantly less than facing extrapolated recoupments that can reach millions of dollars per contract.

Is your organization ready for the new era of RADV audits?

Request your RADV readiness audit to identify documentation gaps before CMS does. We'll review a sample of your medical records against RADV criteria, identify high-risk areas, and provide a roadmap for strengthening your documentation and coding processes.

Contact us today to schedule your RADV readiness assessment: Request Your Free Audit

FAQs

Q: What happens if RADV auditors find unsupported HCC codes? 

A: CMS will disallow the codes, recalculate your RAF score, and require repayment. For larger findings, CMS may extrapolate results across your entire contract.

Q: What's the most common reason for RADV failures? 

A: Insufficient documentation of MEAT criteria (Monitor, Evaluate, Assess, Treat) is the leading cause of disallowed HCC codes.