Can I appeal Healthy Paws' bilateral exclusion for my dog's ACL tear?
PetClaim Editorial · 7/7/2026
My dog was recently diagnosed with an ACL tear on one side, and Healthy Paws denied coverage, citing a bilateral exclusion because she previously had an issue with the other knee. I don't understand why a prior injury on one side means they won't cover treatment for a new injury on the other. What are my options for appealing this decision?
1 answer
★ Verified expert
Navigating a denial based on a bilateral exclusion, especially with a major insurer like Healthy Paws, can be incredibly frustrating. It's a common area of contention, and you're right to question it. Let's break down Healthy Paws' stance and how you might approach an appeal.
Healthy Paws, like many pet insurance providers, employs a bilateral exclusion clause in their policies. This means if a condition can affect both sides of the body (e.g., knees, hips, eyes, ears), and one side exhibited symptoms or was treated *before* the policy's effective date or during a waiting period, then any subsequent occurrence of that same condition on the *other side* of the body will be considered pre-existing and therefore excluded from coverage. In your case, the previous knee issue, even on the opposite leg, is being used to deny the current ACL tear.
The typical reasoning behind these denials is the insurers' actuarial assessment that if one side is affected by a condition, the other side is significantly more prone to developing the same issue. They view it as a single, systemic problem rather than two independent events. For conditions like ACL tears, patellar luxation, or hip dysplasia, this is a standard industry practice, albeit one that generates considerable debate among pet owners.
To appeal Healthy Paws' decision, you'll need a well-structured approach. First, carefully review your entire policy document, specifically looking for the exact wording of the bilateral exclusion clause. Understanding its precise language is crucial. Next, gather all veterinary records, not just for the current ACL tear but also for the previous knee issue. Pay close attention to the dates of diagnosis, onset of symptoms, and any treatments or recommendations.
Your appeal should clearly state why you believe the current ACL tear is *not* related to the previous one in a way that warrants exclusion. Did your veterinarian explicitly state that the two injuries are independent? Is there a significant time gap between the two events? Was the previous issue a different type of injury or severity? You might need to obtain a letter from your veterinarian explicitly stating their professional opinion that the current injury is a new and unrelated incident, not merely a progression of the prior condition.
Highlight any evidence from your vet records that supports the idea of a new trauma or distinct cause for the second ACL tear. If the previous issue was mild or fully resolved without ongoing treatment, emphasize this. You're effectively trying to demonstrate that the two events are not linked by the policy's definition of a pre-existing bilateral condition.
When preparing your appeal, remember to be factual, polite, and persistent. Clearly reference your policy number and claim number. While challenging a bilateral exclusion can be difficult, presenting compelling evidence from your vet can sometimes lead to a reconsideration. Even if the initial internal appeal is denied, some states offer external review processes through their Department of Insurance.
Crafting a strong appeal requires accuracy and clarity. Consider using resources like PetClaim's appeal builder to help organize your arguments and necessary documentation, ensuring you hit all the key points for a thorough review. Don't give up after the first denial – a well-supported appeal can sometimes turn the tide.
PetClaim Expert Team · 7/7/2026 · 0 found helpful