Denial reasons
The 8 categories carriers use to deny pet insurance claims
Each pillar below covers what the carrier's denial language really means, the procedural moves that strengthen an appeal in that category, and the policy-section variations across carriers. Cited to carrier policy language and the NAIC Pet Insurance Model Act.
Pre-existing condition
An exclusion that bars coverage for any condition that showed signs, symptoms, or was diagnosed before your policy started — and, for most carriers, before your policy's waiting period ended.
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Breed exclusion
An exclusion that bars coverage for conditions known to be common in your pet's breed — often listed in a 'hereditary' or 'congenital' clause that the carrier interprets to include breed-specific predispositions.
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Waiting period
Most pet insurance policies have a waiting period after the effective date — typically 14 days for illness, 24-72 hours for accidents, and up to 6-12 months for orthopedic or cruciate conditions — during which claims are not covered.
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Treatment vs. prevention
An exclusion that bars routine wellness or preventive care from accident-and-illness coverage. Cleanings, annual exams, vaccines, parasite preventatives, and spay/neuter are typically excluded unless you carry a separate wellness rider.
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Bilateral condition
If your pet has had a paired-organ condition before your policy started (one knee's cruciate ligament, one ear infection, one eye), most carriers consider the OTHER side pre-existing too — even if it's never had a symptom.
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Behavioral exclusion
An exclusion that bars coverage for behavioral conditions — anxiety, aggression, destructive behavior, separation issues — and the medications or training to address them.
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Dental exclusion
Most accident-and-illness policies exclude routine dental care (cleanings, extractions for dental disease, polishing) unless you carry a wellness rider. Dental work to repair injury (e.g., a broken tooth from an accident) is typically covered.
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Hereditary / genetic
A blanket exclusion (in older or budget policies) of conditions with a genetic or hereditary component — hip dysplasia, cherry eye, certain heart conditions. Most modern policies cover these unless specifically excluded; older policies often exclude them by default.
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