Medicare Denied Your Lab Work / Diagnostic Testing?
Published data shows denial and appeal outcomes vary by plan, product year, denial reason, and documentation. Use this page to spot the issues to request and the evidence to gather before you decide what to submit.Sources include KFF ACA Marketplace Transparency Data, HHS OIG reports, and state insurance department filings. Aggregate rates are context, not predictions for an individual case.
Based on published government and industry research. Individual results vary based on denial type, insurer, and documentation.
Why they said no
Why Medicare Denies Lab Work / Diagnostic Testing
Test not indicated based on diagnosis code
Duplicate testing within coverage period
Experimental or investigational test classification
Medicare patterns
Medicare's Common Denial Patterns
Denying claims as not reasonable and necessary
Coverage determinations based on LCD/NCD criteria
Denying skilled nursing facility stays as custodial care
What works
How to Strengthen Your Lab Work / Diagnostic Testing Appeal
Physician order with specific clinical indication
Evidence test results changed treatment plan
Published clinical guidelines recommending the test for the diagnosis
Your rights
Laws That Protect You
ACA — Preventive services coverage
CLIA standards for laboratory testing
State genetic testing protection laws
Playbook
Tips for Appealing to Medicare
Medicare has a 5-level appeal process with different evidence and deadline rules at each level
Request an ALJ hearing if redetermination and reconsideration fail
Cite specific LCD/NCD criteria and explain how your case meets them
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Related denial guides
More Medicare denials
Lab Work / Diagnostic Testing denials by other insurers
This information is for educational and informational purposes only. It does not constitute legal or medical advice. Statistics cited are from publicly available sources including KFF, HHS OIG, and state insurance department data. Individual results may vary. Consult a qualified professional before taking action on your specific situation.