Lemonade Pet Insurance Pre-Existing Conditions: What Counts and What Doesn't
Pre-existing conditions are the biggest exclusion in any pet insurance policy. Here is how Lemonade defines them, the curable-condition exception, and bilateral surprises.
Pre-existing conditions are the single biggest exclusion in any pet insurance policy and the source of most claim denials. "Lemonade pet insurance pre existing conditions" pulls about 210 monthly searches, all from buyers trying to figure out whether a specific condition will be covered or not. This article walks through how Lemonade defines pre-existing, the curable-condition exception that some buyers do not know about, and the bilateral-condition surprise that catches owners of breeds with known orthopedic predispositions.
How Lemonade defines a pre-existing condition
Per Lemonade's published policy, a pre-existing condition is "any condition for which your pet has shown symptoms, has been diagnosed, or has received treatment before the effective start date of your policy, including during the waiting period."
Three parts of that definition matter:
- Symptoms count, not just diagnosis. A dog who limped occasionally before the policy started has documented symptoms even without a formal diagnosis. If joint issues are later diagnosed, the limping history can make the joint condition pre-existing.
- Treatment counts. If a vet prescribed any medication or recommended any management, that creates a documented condition record.
- The waiting period is included. Anything that appears during the 2-day accident, 14-day illness, 30-day orthopedic, or 6-month cruciate waiting periods is treated the same as if it had appeared before policy start.
The third point is the one that catches buyers most often. Buyers think they have coverage as soon as the policy is active and are surprised when an illness diagnosed on day 10 is excluded as pre-existing.
The 180-day medical records review
Lemonade requires medical records covering the 12.5 months before policy effective date (or birth, if the pet is less than a year old). For first claims, the records review is the basis for identifying pre-existing conditions. Specifically:
- Treatments and diagnoses in the 180 days before the policy will be classified as pre-existing.
- Older records (180+ days back) help establish whether conditions have been "stable" or symptomatic.
- The 12.5 month window is the standard Lemonade uses (some other carriers use 6 months, 1 year, or 24 months; 12.5 months is mid-range).
If your pet's records show occasional minor issues (one ear infection, single bout of GI upset) that resolved fully, those typically do not become pre-existing exclusions because they qualify under the curable-condition exception described below. If your pet has documented chronic management (ongoing skin condition, sustained joint medication, recurrent ear infections every few months), those become permanent pre-existing exclusions.
The curable pre-existing condition exception
Lemonade's policy includes a meaningful exception that many buyers do not know about: a pre-existing condition can become covered if the pet has been symptom-free and treatment-free for at least 12 consecutive months after the original incident.
The exception applies to genuinely curable conditions:
- Single ear infections that resolved with treatment.
- One-time GI episodes (diarrhea, vomiting) without recurrence.
- Minor skin issues that cleared up and did not return.
- Acute injuries (cuts, sprains) that healed completely.
- Single respiratory infections.
The exception does not apply to:
- Chronic conditions (allergies, arthritis, diabetes, heart disease, cancer).
- Hereditary conditions (hip dysplasia, cherry eye, breed-specific predispositions).
- Conditions that recurred at any point in the lookback window.
- Anything currently under treatment.
The curable exception is more buyer-friendly than the policies of most competitors, which typically treat any documented condition as permanently pre-existing. For a dog with a fully-resolved single incident in their history, Lemonade is often the cleanest enrollment path.
The bilateral condition trap
Lemonade's policy includes a bilateral condition clause that catches owners of certain breeds. Bilateral conditions are those that potentially affect both sides of the body: cherry eye, cataracts, cruciate ligament tears, hip dysplasia, elbow dysplasia, ear infections, eye conditions.
The rule: if a bilateral condition is pre-existing on one side, the other side is also excluded if it later develops.
For a dog with confirmed left-side hip dysplasia before policy start, the right hip is also excluded under the bilateral clause. If the dog later develops cherry eye in the right eye after having had cherry eye in the left eye pre-policy, that is also excluded.
This catches owners of large breeds (hip dysplasia common in Goldens, Labs, Rottweilers) and certain small breeds (cherry eye in Bulldogs, Beagles, Bloodhounds). The honest read: if your pet has any documented bilateral-eligible condition on one side before enrollment, that condition is essentially locked out across the body's life.
The bilateral clause is not unique to Lemonade; it is standard in US pet insurance. The standard does not make it less surprising when it happens.
What conditions are typically not pre-existing
Some conditions almost always become covered because they emerge from underlying causes that did not exist in the pre-policy window:
- Most cancers. Cancer typically does not have a documentable symptomatic precursor in the 180-day pre-policy window unless the cancer was already advanced at enrollment.
- Acute trauma after enrollment. Broken bones, lacerations, ingestion of foreign objects, car accidents after the 2-day accident waiting period are not pre-existing.
- Late-onset organ disease. Kidney disease, liver disease, or heart conditions that emerge years into the policy with no prior symptoms.
- Standard infectious illnesses. URI, kennel cough, parvovirus, leptospirosis, and similar contracted after the waiting period.
- Dental disease (with the Dental Illness add-on). Most dental disease emerges over years and is not symptomatic in the 180-day pre-policy window.
The pattern: anything that develops cleanly after the waiting periods, with no prior documented history, gets covered. Anything with documentable pre-policy precedent is at risk of being treated as pre-existing.
Common questions
What counts as a pre-existing condition with Lemonade?
Anything your pet showed symptoms of, was diagnosed with, or received treatment for before the policy effective date, including during the waiting periods. The 12.5-month medical records review is how Lemonade identifies these. Single curable incidents that resolved and have stayed resolved for 12 months can become covered through the curable-condition exception.
How does Lemonade verify pre-existing conditions?
Through the medical records request that occurs after your first claim. Lemonade asks your vet to provide 12.5 months of records (or all records back to birth for pets under a year old). The claims team reviews for any documented condition in that window. Subsequent claims do not require additional record review unless a new condition emerges.
Does Lemonade cover anything related to a pre-existing condition?
Limited and inconsistent. Conditions completely unrelated to the pre-existing condition are covered normally. Conditions that the medical records team determines are related to the pre-existing condition (a hip dysplasia in the right hip when the left was pre-existing, an ear infection recurrence after a documented prior ear infection) are typically excluded. The "related" determination can be appealed if you believe Lemonade has incorrectly linked an unrelated event.
What is the 12-month symptom-free rule for curable conditions?
Lemonade considers a pre-existing condition "cured" if the pet has been symptom-free and treatment-free for 12 consecutive months. Once that 12-month window passes cleanly, the condition is no longer treated as pre-existing for future incidents. This applies to genuinely curable conditions (single infections, one-time GI events, healed acute injuries) but not chronic conditions (allergies, arthritis, diabetes, heart disease).
Should I disclose a known pre-existing condition during enrollment?
Yes, even though Lemonade does not require it at enrollment. The condition will be discovered during the medical records review at first claim regardless of what you disclose at enrollment. Honest disclosure does not change the outcome but does prevent any appearance of misrepresentation. Mispresenting your pet's medical history is grounds for policy cancellation in extreme cases.
Can I get pet insurance after a pre-existing condition is diagnosed?
You can buy the policy, but the diagnosed condition will be excluded. The math is still favorable in most cases because the policy covers all future unrelated conditions, which represent most of what pet insurance is buying you against. A dog with diagnosed allergies can still benefit meaningfully from pet insurance for future cancer treatment, surgery for unrelated injuries, etc. The allergies themselves will be the owner's out-of-pocket cost.
The honest summary
Lemonade's pre-existing condition definition is reasonably standard for the US pet insurance market. The curable-condition 12-month rule is somewhat more buyer-friendly than competitors. The bilateral clause is standard and worth understanding before enrollment.
The clean strategy is to enroll your pet while they are young and healthy, satisfy the waiting periods before any conditions emerge, and document everything in case appeal is needed later. For pets with already-known issues, Lemonade is still typically the best math because the excluded condition does not lock out unrelated future coverage. → Get a Lemonade pet insurance quote to see what your specific pet would pay before any pre-existing exclusions are applied.