Why Nationwide denies claims for this reason
▸The condition appears on the policy exclusion list
▸The insurer is classifying the condition differently than the treating vet
▸The condition is a complication of an excluded condition
▸The policy language is ambiguous and the insurer is reading it against you
Your strongest appeal arguments
✓Ask the insurer to cite the exact policy section and exact wording that excludes this condition.
✓Under the legal doctrine of contra proferentem, ambiguous insurance language must be read in favor of the policyholder. Cite this in your appeal.
✓If the condition is a complication of a covered condition, argue it should be covered as part of the original claim.
✓Compare the treating vet's diagnosis code against the policy exclusion list. Classification errors are more common than insurers admit.
Documents to gather before you appeal
✓Your policy's full exclusion list and the relevant section
✓The denial letter citing the specific exclusion
✓Vet records clarifying the diagnosis and its relationship to covered conditions
✓Any clinical guidelines supporting that this condition is standard of care
Timeline
These appeals depend heavily on policy language. Allow 30 to 45 days for the insurer to respond.
If your appeal is denied again
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Other Nationwide denial types
Condition Not Covered at other insurers