Why Pet Insurance Claims Get Denied, and How to Appeal One

A denied claim usually arrives as a short letter with a reason code and a dollar figure of zero. The reason is almost always one of eight, each tied to a specific mechanism in the policy or the claims process, and knowing which one produced the denial tells you whether an appeal has a chance. Some denials are correct readings of the policy; some rest on an ambiguous vet note or a missing page.

Pre-existing: the records review behind most denials

The insurer doesn’t decide a condition is pre-existing from the claim form; it reads the medical records. Lemonade requires records covering the last 12.5 months before enrollment; Figo reviews the 12 months before enrollment plus the waiting period, and if there was no exam in that window it uses the first exam after the effective date; Embrace reviews the pet’s medical history as part of underwriting. The question is whether anything in that window shows advice, treatment, or signs or symptoms of the condition now being claimed, which is the definition Pennsylvania wrote into its statute and close to what most policies say.

Signs are the catch. A note of “intermittent limping” a year before a cruciate claim, or “scratching, discussed diet” before an allergy claim, counts. The pre-existing conditions guide explains the review, and the curable-condition rules (Embrace after 12 symptom-free months, Spot and ASPCA after 180 days cured) give a route back for conditions that resolved.

Waiting period, excluded category, and the other policy-shape denials

A condition that first showed signs during the waiting period is treated as pre-existing by every policy we’ve read, so a 14-day or 30-day illness wait, or a 6-month orthopedic wait at Embrace or Figo, produces denials for conditions that began on day 10 or month 4. The waiting period guide covers the timing.

Excluded categories produce the denials that feel most arbitrary but are the easiest to verify. Exam fees are excluded by Trupanion and Healthy Paws and sold as an add-on by Lemonade and Embrace. Preventive care, vaccines, and spay or neuter sit outside accident-and-illness cover without a wellness add-on. Healthy Paws excludes behavioral modification and training, boarding, and elective procedures, while Embrace’s base policy covers vet-supervised behavioral therapy, so the same invoice line can be denied at one insurer and paid at another. The what’s not covered guide lists the usual exclusions so you can check which one the letter cites.

Paperwork denials: invoices, records, and deadlines

Some denials are about the file, not the pet. An invoice that shows a total but not line items can’t be adjudicated, because the insurer needs to separate the exam fee from the bloodwork from the drug, and a claim for a new condition without the visit notes stalls until the vet sends them. The claims guide describes what to ask the clinic for before you leave.

Deadlines are the quiet one. Lemonade publishes a filing window of 180 days, or 90 days in Texas. Trupanion, Healthy Paws, Embrace, Pets Best, Figo, ASPCA, and Spot don’t state a deadline on the public pages we checked, so the policy document is where to find yours. A late claim is denied regardless of merit.

Limits, sub-limits, exam rules, and lapses

A claim can be valid and still pay nothing because the money ran out. An annual limit already used pays zero until renewal, and a sub-limit does the same for one category: Embrace caps dental illness at $1,000 per policy year, so a second periodontal claim in the same year is denied on the cap, not on the condition. See the annual limit guide.

Some coverages carry a condition precedent. Pets Best covers periodontal disease only if the pet was free of signs beforehand and had a cleaning or exam within 13 months of the service; miss the exam and the dental claim is denied. Healthy Paws’s FAQ says all pets should have a vet exam, with timing depending on enrollment age. The dental guide covers the dental versions.

A lapse is the last one. If a payment fails and the policy cancels, treatment during the gap isn’t covered, and a new policy restarts the waiting periods and treats conditions from the gap as pre-existing; the switching guide explains why continuous cover matters.

Appealing a denied claim: what to ask for

Start by asking the insurer, in writing, for the specific reason and the policy clause it rests on. A reason code isn’t enough; you want the wording. Then ask for the records the insurer relied on, including the page and the date of the note it read as a sign, because the gap between a summary and the full chart is where appeals are won.

Next, take that note to your vet. If “intermittent limping” referred to a thorn in the paw, or “scratching” to a flea bite that resolved, ask for a written clarification stating what was found and what wasn’t. The vet’s addendum is evidence; your recollection isn’t. Submit the appeal with the clause, the records, and the clarification, and keep a copy of everything; the reimbursement timing guide explains why an appeal runs slower than a first review.

When the state insurance department can help

If the appeal fails, the state insurance department takes complaints about insurers, and in states that have adopted the NAIC pet insurance model act there’s specific law to point at. Florida’s statute says the insurer bears the burden of proving a pre-existing exclusion applies, and Ohio’s says the same. Pennsylvania’s defines a pre-existing condition as one with advice, treatment, or signs supported by verifiable sources, so a vague note needs something behind it. California bars reclassifying a covered condition as pre-existing at renewal. The Florida, Ohio, and Pennsylvania pages cite the statutes, with the NAIC’s state status page as the source for which states have adopted the act.

Outside those states the complaint still goes to the insurance department, and the policy wording governs. Either way, the appeal file you built is what the regulator asks for first. This is general information, not legal advice.

This article is general information, not insurance or veterinary advice. Coverage, prices, and terms vary by insurer, pet, and location. Always read the policy and confirm details with the provider before buying.