Cigna CO-50 Medical Necessity Denials in Dermatology
Non-covered services; not deemed medically necessary. Copy-paste appeal letter with documented overturn rate and attachment checklist for Cigna in Dermatology.
Verify before filing
Filing deadlines, appeal addresses, and policy criteria in this template reflect typical payer behavior at publication. Cigna 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 Cignamedical-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
Cigna's CO-50 denials in dermatology concentrate on the cosmetic-medical boundary. Procedures that can be either cosmetic or medically necessary. Destruction of benign lesions (17110, 17111), laser treatments, and certain excisions. Frequently trigger CO-50 when Cigna's UM team determines the indication was cosmetic.
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] Cigna Provider Appeals [Address from EOB] Re: Appeal of CO-50 Medical Necessity Denial Member: [Patient Name] Member ID: [Member ID] Date of Service: [DOS] Claim Number: [Claim #] CPT: [e.g., 17110 - Destruction of benign lesion; or 96372/J0585 - Botox injection] Cigna Medical Coverage Policy: [MCP number] To Whom It May Concern: We appeal the CO-50 denial. The documentation meets Cigna MCP [number] criteria for medical-necessity coverage. Clinical Indication: [Patient] with [diagnosis, ICD-10] has [specific findings]. The service was medically necessary due to: [For benign lesion destruction] - Size: [X mm/cm documented] - Symptoms: [irritation, bleeding, pain, rapid growth with dates] - Location: [anatomic impact on function/clothing contact] - Pathology: [if biopsied, result] [For Botox medical indication] - Prior failed treatments: [Treatment 1 name/dose/duration/response; Treatment 2 same] - Symptom frequency: [X days per month meeting MCP threshold] - Dosing: [within FDA protocol for indication] [For Mohs trunk/extremity] - Biopsy: [pathology, subtype, margin status] - High-risk feature: [size >2cm / recurrent / aggressive subtype / immunosuppressed / location] - Size: [X cm measured] Documentation attached: 1. Clinical H&P with documented medical indication 2. Photographs with measurements (where applicable) 3. Prior treatment documentation (for Botox) 4. Biopsy pathology (for Mohs) 5. Cigna MCP [number] criteria worksheet [Dr. Name] is available for peer-to-peer. Sincerely, [Name]
Pull the exact medical policy number the payer cited on the EOB. Your appeal must map your documentation point-by-point to that policy's stated criteria. Generic clinical narratives lose; criteria-matched documentation wins.
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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 Cigna throws CO-50 specifically in dermatology, 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-50 appeal with Cigna?
180 days from the initial adjudication date for most Cigna 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?
55-70 percent with criteria-matched documentation. Success depends heavily on documentation completeness and whether the clinical criteria in Cigna's medical policy are matched point-by-point in the appeal.
Should I file this as a corrected claim or a formal appeal?
CO-50 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 Cigna. Check our other templates for payer-specific versions; we have 50+ payer/code combinations in the directory.
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