Aetna Denied Your Knee Replacement?
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.This template provides issues to verify, not insurer-specific outcome or deadline predictions. Your denial notice, current plan document, claim status, and governing program control.
Deadlines and review routes depend on plan type, urgent or standard status, whether care has already occurred, jurisdiction, and review level. Use the dates and instructions in the denial notice and current plan documents.
Why they said no
Common reasons Knee Replacement claims are denied
Not medically necessary — conservative treatment not exhausted
Prior authorization not obtained
BMI requirements not met per insurer guidelines
Aetna checks
Issues to check in the Aetna notice
A "not medically necessary" finding — ask which records the reviewer actually had and which written criteria were applied
Step-therapy requirements — check whether the plan credited treatments you already tried and documented
For Medicare Advantage, criteria that may differ from applicable Medicare rules — compare the cited policy with the current NCD, LCD, or permitted public internal criteria
What works
How to Strengthen Your Knee Replacement Appeal
Documentation of failed conservative treatments (PT, injections, bracing)
Radiology showing bone-on-bone or severe joint degeneration
Letter of medical necessity from treating orthopedic surgeon
Functional limitation documentation (inability to work, walk, climb stairs)
Rules to verify
Rights and coverage rules that may apply
Claims-and-appeals rules — check whether your plan is subject to ACA, ERISA, Medicare, or state review requirements
The plan’s written orthopedic coverage criteria — confirm the exact conservative-treatment and documentation requirements cited
External review — may apply only for an eligible plan and qualifying medical-judgment denial; follow the final denial notice
Playbook
Tips for Appealing to Aetna
Request the specific clinical criteria used to deny your claim
Ask for a peer-to-peer review between your doctor and their medical director
If the internal appeal fails, external review or a regulator complaint may be an option — a state-regulated plan goes to your state insurance department; a self-funded employer (ERISA) plan is overseen by the U.S. Department of Labor (EBSA), not the state
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This information is for educational and informational purposes only. It does not constitute legal or medical advice. This page cites no statistics; it lists issues to verify against your own denial notice, plan documents, and the governing rules. Individual results vary. Consult a qualified professional before taking action on your specific situation.