How do pet insurance claims get denied?

What is the most common reason claims get denied?

The pre-existing clause is the largest denial engine, and every insurer in our eight-carrier comparison enforces it. A condition counts as pre-existing if it showed any sign, even undiagnosed, before the policy started or during the wait. A limp noted offhand last spring is enough to sink a later cruciate claim. Healthy Paws states the rule most bluntly, and its version carries an extra edge: if one knee’s cruciate ligament was hurt before enrollment or during the wait, the other knee’s cruciate is excluded too. Spot treats both knees as linked the same way.

One partial mitigation exists. Embrace distinguishes curable from chronic pre-existing conditions and re-covers curable ones after 12 consecutive symptom-free, treatment-free months. Lemonade offers a curable path in most states after 12 consecutive months without recurrent symptoms or continued treatment. Chronic conditions such as diabetes or ongoing allergies, and knee or ligament conditions, stay excluded at both. No other insurer we review spells out an equivalent requalification path.

How do waiting periods deny early claims?

Claims filed during a waiting period are denied, and symptoms that appear in that window become permanent pre-existing exclusions, not just delayed claims. Accident waits run from none at Fetch and 0 days at Lemonade (coverage starts at 12:01 AM the day after purchase) to 15 days at Healthy Paws in most states. Illness waits cluster around two weeks, with Trupanion the outlier at 30 days.

Orthopedic holds are the expensive surprise, and the verified clocks are not identical. Embrace holds cruciate injuries, IVDD and hip dysplasia for 6 months, cut to 14 days if your vet performs an orthopedic exam and submits it within your first two weeks. Figo runs a 6-month orthopedic wait, waivable with a vet exam completed and submitted within the enrollment window. Pets Best waits 6 months for cruciate ligament events, reducible or waivable when a participating veterinarian certifies the pet (exam up to 3 days before or 7 days after the effective date, form back within 30 days of the exam). Lemonade applies a flat 30-day orthopedic period with no separate cruciate wait, and none of its periods can be waived with a vet exam. Spot has no separate orthopedic wait at all, so those claims fall under its standard 14-day illness period. Our review data documents no separate orthopedic clock at Trupanion or Fetch, so treat their terms as policy-specific and read the wording before you buy.

What other clauses deny claims before they start?

Coverage that never existed is the third engine. Owners routinely assume dental disease, exam fees and routine care sit in a base accident and illness policy; mostly they do not. Exam fees cost extra at Pets Best’s base Essential tier and are bundled only in the Plus plan. Dental illness is thin to excluded across most of our lineup; Fetch includes dental disease in its base policy, and Lemonade covers it only through an optional add-on. Wellness riders exist only where offered: Healthy Paws sells none at any tier, and Trupanion offers no routine-care plan. A denial here feels like a bait-and-switch but is usually a category the buyer never purchased.

Fourth, rules written by age rather than by health. Healthy Paws covers hip dysplasia only after a 12-month wait for dogs enrolled at five or below in most states, dropping to 30 exam-waivable days in CA, DE, FL, HI, LA, MD, ME, MS, MT, NE, NH, OH, PA, RI, VT and WA, and not at all for dogs enrolled at six or older. That denial was decided at enrollment, years before the X-ray. Fifth, process gaps: missing medical records, treatment outside covered windows, or claims submitted without required documentation. Process denials are the most reversible category. Complete the file and resubmit before disputing on clause grounds.

What should you do when a denial arrives?

Read the cited clause, not just the decision letter. Then check three questions. Was there truly a prior sign in the record, or is the insurer reading an unrelated note broadly? Did a waiting period apply, and was an available exam-waiver path missed? Is the exclusion one the policy disclosed at sale, such as bilateral linking or an age-linked hip rule, or one you reasonably believed was covered? For genuine record errors, request a correction through your vet and escalate through the insurer’s appeals process; state insurance departments handle disputes beyond that.

Prevention beats appeal. Enroll before problems exist, submit any qualifying orthopedic exam inside the waiver window, keep your own copies of vet records, and read two clauses before buying: the exact pre-existing definition and whatever bilateral or age-linked exclusions apply to your breed’s known weak points. Every number on this page comes from WhichPetPlan’s verified insurer review data, re-checked August 2026.

Related questions

Keep reading

• How claims actually get denied
• Pre-existing conditions, explained
• Waiting periods, explained
• Cruciate coverage and orthopedic waits
• Does pet insurance cover dental?
• What does pet insurance cover?