For years, Risk Adjustment Data Validation (RADV) audits were treated as a Medicare Advantage plan issue — something health plans worried about, not something that touched an individual practice. That assumption no longer holds.

CMS confirmed in early 2026 that it's expanding RADV audits from a small annual sample of contracts toward nearly every eligible Medicare Advantage contract, reviewed on a recurring, quarterly basis. And every RADV audit traces back to the same starting point: the medical record a provider wrote.

That shift is why clinical chart review — once treated as a back-office coding exercise — is becoming something practices are building into their regular workflow, not just their audit response plan.

What Is a Clinical Chart Review, in Plain Terms?

Quick answer: A clinical chart review is a structured evaluation of a patient's medical record to confirm that documented diagnoses are complete, specific, and clinically supported — typically checking labs, notes, imaging, and prior visits for accuracy before that documentation is used for coding, quality reporting, or risk adjustment.

Think of it as a second, expert set of eyes on the chart — not to second-guess clinical judgment, but to confirm that judgment made it onto the page clearly enough for coders, auditors, and downstream reviewers to see it too.

A medical chart review and a clinical chart review are often used interchangeably, though "clinical" chart review typically emphasizes the clinical accuracy and specificity of the documentation itself, while "medical" chart review can also refer more broadly to record audits for compliance, quality, or legal purposes.

Callout — Why This Matters More in 2026 RADV audits validate whether a diagnosis submitted for payment is actually supported by the medical record. If the chart doesn't clearly document a condition with the right specificity, the diagnosis can be deemed unsupported — regardless of how well the patient was actually treated.

What Changed With RADV Audits in 2026

CMS has also confirmed that Payment Year 2020 audits began in early 2026, with a five-month medical record submission window restored — a tighter, more predictable cycle than plans and practices have dealt with in years past.

Why This Trickles Down to the Provider Level

Health plans don't generate the documentation CMS is validating — providers do. When a RADV audit flags an unsupported diagnosis, the root cause is almost always one of a few patterns:

1. A condition was managed clinically but never explicitly documented with enough specificity.
2. A diagnosis was copied forward from a prior note without being reassessed or re-confirmed for the current year.
3. Supporting details (staging, laterality, causal relationships between conditions) were implied but not stated.
4. The encounter type or provider credentials on the record didn't meet audit documentation standards.

None of these are clinical failures. They're documentation gaps — and they're exactly what a structured clinical chart review is designed to catch before an external auditor does.

A Realistic Example

Chart as originally documented: "Follow-up for CKD and diabetes, doing well, continue current plan."

Same chart after a clinical chart review identifies the gap: "Follow-up for type 2 diabetes mellitus with diabetic chronic kidney disease, stage 3a, stable on current regimen. Diagnosis reassessed and confirmed at this visit."

The clinical picture didn't change — the patient was managed the same way either time. But only the second version gives a RADV reviewer, or a coder preparing the record for submission, the specificity needed to confirm the diagnosis is fully supported.

Myths vs. Facts About Clinical Chart Review and RADV Preparedness

Expert Tip: Review High-Acuity Charts First

"Not every chart carries equal audit risk. Practices get the most value out of chart review by starting with high-acuity, multi-condition patients — the charts most likely to carry several HCC-relevant diagnoses — rather than trying to review every record at once."

What a Structured Medical Chart Review Program Typically Includes

A well-run clinical chart review process generally covers:

1. Full record evaluation — labs, consult notes, imaging, progress notes, and prior visit history, not just the most recent note.
2. Diagnosis specificity check — confirming conditions are documented with the staging, laterality, or causal detail the coding standards require.
3. Annual reassessment verification — checking that chronic conditions were re-confirmed for the current calendar year rather than only copy-forwarded.
4. Provider feedback session — a direct conversation walking through findings, not just a written report left unopened.
5. Actionable summary — a clear, prioritized list of documentation opportunities the provider and their team can act on going forward.

This is the structure behind CoDoc Academy's Member Clinical Review program, which pairs comprehensive clinical chart review of high-acuity patient charts with a direct provider feedback session — designed specifically to close the kind of documentation gaps that RADV audits, ICD-10 coding reviews, and HCC coding reviews are built to catch.

Frequently Asked Questions

1. What is a clinical chart review? A clinical chart review is a structured evaluation of a patient's medical record — including labs, notes, and imaging — to confirm that documented diagnoses are complete, specific, and clinically supported for coding and risk adjustment purposes.

2. Why are RADV audits relevant to individual providers, not just health plans? Because RADV audits validate diagnoses against the medical record the provider wrote. If documentation lacks specificity, the diagnosis can be deemed unsupported, even when the patient was managed correctly.

3. How is a medical chart review different from a coding audit? A medical chart review typically looks at the full clinical picture and documentation quality, while a coding audit focuses more narrowly on whether the codes billed match what's documented. The two are related but not identical.

4. How often should a practice conduct a clinical chart review? Many practices in value-based care or Medicare Advantage arrangements benefit from periodic, ongoing chart review — rather than a single annual check — given that CMS generally expects chronic conditions to be reassessed each calendar year.

5. What should providers expect from a chart review program? A structured chart review should include a full record evaluation, identification of documentation gaps, and a direct feedback session with actionable, prioritized recommendations — not just a written report.

The Bottom Line

RADV audits used to feel like a distant health-plan concern. In 2026, with CMS auditing nearly every eligible contract on a recurring basis, the documentation written at the point of care is under more scrutiny than it has been in years. Practices that treat clinical chart review as an ongoing habit — not a reaction to an audit letter — tend to catch documentation gaps while they're still easy to fix. For providers ready to build that habit systematically, CoDoc Academy's Member Clinical Review program offers a structured, provider-focused starting point.