Aetna CO-197 Prior Authorization Denials in Cardiology
Precertification / authorization / notification absent. Copy-paste appeal letter with documented overturn rate and attachment checklist for Aetna in Cardiology.
Verify before filing
Filing deadlines, appeal addresses, and policy criteria in this template reflect typical payer behavior at publication. Aetna updates policies frequently and plan-level rules vary by employer group, state, and line of business. Always cross-check the specific deadline and filing address on your EOB, and confirm current Aetnamedical-policy language through the payer’s provider portal before submitting an appeal. Overturn-rate language below reflects AAPC-reviewer consensus, not payer-published statistics.
When to use this template
Aetna's cardiology prior-authorization gate is one of the most aggressive in commercial. For stress echo, nuclear cardiology (myocardial perfusion imaging / MPI), stress MRI, and all non-emergent cardiac catheterizations, Aetna requires precertification before the service is rendered. The CO-197 denial fires when a procedure was performed without an auth on file, when the auth covered a different CPT or date than what was billed, or when the clinical documentation the ordering physician submitted did not match Aetna's Clinical Policy Bulletin (CPB) for the service.
Attachment checklist
- Ordering provider note with clinical indication
- Prior workup or conservative-care documentation
- Payer medical policy reference citing met criteria
- Retroactive authorization request (if applicable)
Missing any one of these is the single largest cause of appeal denials. Build a pre-filing checklist before you submit.
Copy-paste letter template
Swap in your patient details at every [bracketed field]. Attach the documentation listed above. Submit within 180 days of the original adjudication.
[Practice Letterhead] [Date] Aetna Provider Resolution Unit PO Box 14463 Lexington, KY 40512 Re: Appeal of CO-197 Denial Member: [Patient Name] Member ID: [Member ID] Date of Service: [DOS] Claim Number: [Claim #] CPT: [e.g., 93458 - Cardiac catheterization, left heart] To Whom It May Concern: We are formally appealing the CO-197 prior-authorization denial for the above-referenced claim. The service was medically necessary, clinically indicated, and supported by documentation that meets Aetna's Clinical Policy Bulletin for [service name]. Clinical Indication: [Patient] presented with [symptom, e.g., exertional chest pain, dyspnea, syncope] on [date]. Pretest probability for coronary artery disease was [risk level] based on [age, risk factors, prior studies]. [Non-invasive testing result or specific clinical finding that warranted the invasive/advanced study.] Documentation attached: 1. Ordering physician H&P dated [date] 2. Prior diagnostic results supporting the order (stress test, EKG, labs) 3. The Clinical Policy Bulletin [CPB number] excerpt showing the clinical criteria met 4. Retroactive authorization request submitted on [date] The authorization gap was administrative, not clinical. The patient's clinical presentation and documentation support medical necessity under Aetna CPB [number]. We respectfully request that Aetna approve the retroactive authorization and reprocess the claim for payment. If further clinical discussion is needed, our ordering cardiologist, [Dr. Name], is available for peer-to-peer review at [phone/email]. Sincerely, [Name, title] [Practice] [NPI, TIN]
Request retroactive authorization first (within 30 days of denial), before escalating to a formal appeal. Most prior-auth CO-197 denials are resolved faster via retro-auth than the full appeal pathway.
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Related templates
Same code, different payer. Or same payer, different problem
Want the full playbook for this scenario?
The complete playbook page covers why Aetna throws CO-197 specifically in cardiology, the exact fix workflow, filing deadlines, high-risk CPTs, and FAQs. Plus this same copy-paste letter.
Read the full playbookCommon questions on this template
How long do I have to file a CO-197 appeal with Aetna?
180 days from the initial adjudication date for most Aetna plans. Corrected claims (for administrative fixes like missing modifiers or auth numbers) have a different and usually longer window. Always confirm the specific deadline on the EOB for your claim.
What is the typical overturn rate for this denial type?
65-80 percent when clinical indication is well-documented. Success depends heavily on documentation completeness and whether the clinical criteria in Aetna's medical policy are matched point-by-point in the appeal.
Should I file this as a corrected claim or a formal appeal?
CO-197 denials are usually formal clinical appeals. The template below follows the formal-appeal structure. Use a corrected claim only if the fix is administrative (a missing modifier, wrong NPI) rather than clinical.
Can I reuse this template for other payers?
The structure works for any payer, but the filing address, deadline, and policy references are specific to Aetna. Check our other templates for payer-specific versions; we have 50+ payer/code combinations in the directory.
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