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Pre-Existing Conditions
How Pet Insurers Find Pre-Existing Conditions — And What They Flag
The most common complaint about pet insurance on Trustpilot, Reddit, and BBB is some version of the same story: owner pays premiums for months or years, files a claim, and learns for the first time that their pet has a pre-existing condition that has been excluded from day one.
This is not random. Insurers use a specific, predictable process to identify pre-existing conditions — and it is worth understanding before you enroll, not after your first denial.
The core mechanic: Most pet insurers do not review your pet's records until you file your first illness claim. Then they request complete veterinary records going back years and flag anything that could be connected to your current claim. By that point, you have already paid premiums and cannot easily switch.
These patterns come from verified complaints on Trustpilot and the Better Business Bureau in 2025-2026.
“Our dog had an allergy to chicken-based food as a puppy which resulted in otitis externa. Now I am being told all dermatologic conditions are no longer covered as pre-existing. If a dog has ANY kind of medical problem prior to obtaining coverage, then the ENTIRE SYSTEM of their body is no longer covered. Hives? Yeast? Cellulitis? Heat rash? They are ALL not covered.”
“I had a policy and paid premiums for 24 months before submitting my first claim. They waited till first claim to do ANY checks and disclose any pre-existing conditions they refuse to cover. How about operating with integrity and doing this right upfront?”
“Even though the vet specifically didn't check any condition and said he was perfectly healthy, the rate adjustor assigned to me added a pre-existing condition to my coverage. After contacting the appeals team and having my vet once again confirm no pre-existing conditions for my dog, my appeal was denied.”
“They denied my cat coverage for any dental issues since on our initial vet exam she presented with gingivitis. We appealed with paperwork that the condition was cleared after a tooth cleaning and they still denied us coverage. They stated it is a pre-existing condition and she would never be covered for anything dental related for the rest of her life.”
| What appears in records | How insurer treats it | Your options |
|---|---|---|
| Formal diagnosis before enrollment | Pre-existing. Excluded permanently at most insurers. | Embrace: curable conditions covered after 12 months symptom-free. AKC: possibly covered after 365 days. |
| “Rule out X” or “suspected X” in vet notes | Often treated as pre-existing even without confirmed diagnosis. The insurer does not need a diagnosis — a suspicion is enough. | Complete the follow-up test. Get a written “ruled out, normal results” note from the vet. This can protect you. |
| Symptoms noted without diagnosis | “Occasional limping” or “scratching left ear” can exclude the entire related body system. | Enrolling before symptoms are documented is the only reliable protection. |
| Chronic medication in records | Apoquel, Adequan, insulin, thyroid medication — each signals a pre-existing condition that will be excluded. | The medication itself is the flag. Once in the records, exclusion is almost certain at any new insurer. |
| Resolved or cured conditions | Most insurers exclude permanently. Embrace covers curable conditions after 12 consecutive months symptom-free. | Embrace is the main exception. Get written vet confirmation of resolution with a date. |
| Abnormal lab values | Elevated creatinine, glucose, liver enzymes — even a single mildly abnormal result can exclude the related organ system. | Retest after treatment. If values normalize, document the normal results explicitly in writing. |
One of the most frustrating and least-understood aspects of pre-existing exclusions is that insurers often exclude the entire related body system, not just the specific condition.
A dog with a food allergy that caused one ear infection may have the entire dermatological system excluded — meaning future ear infections, skin rashes, yeast infections, and hot spots are all denied, even if they are completely unrelated to the original allergy.
This is technically legal and disclosed in policy language, but almost no owner reads it before enrollment.
The bilateral problem: A similar expansion applies to paired body parts. If one knee has a documented injury before enrollment, the other knee may be excluded too — even if it is perfectly healthy. This bilateral exclusion applies to knees, hips, elbows, eyes, and ears at most insurers.
Here is the exact sequence at most major pet insurers:
This is why owners who have paid premiums for 12-24 months without claiming have no idea what is excluded until the first claim.
The exception: Some insurers (Embrace, Trupanion) offer an optional pre-policy medical review at enrollment that identifies exclusions upfront. It takes longer to start coverage but removes the surprise. If you have a pet with any health history, requesting this upfront review is worth the wait.
PawClaim reads your pet's vet records the same way an insurance adjuster would — and shows you exactly which conditions each of 17 insurers would exclude before you pay a single premium.
Scan my records free ›Pre-existing denials are the most commonly appealed and overturned type of pet insurance denial. Grounds for a successful appeal include: