What Pet Insurance Doesn't Cover (Read Before Buying)

The most significant exclusion in every pet insurance policy is pre-existing conditions — any illness or injury that existed before the policy start date, including anything noted in your pet's medical records.

This applies even to conditions that appear unrelated. If your dog was treated for a limp in 2023 and develops cruciate ligament disease in 2025, the insurer may argue the limp was an early symptom and exclude the claim.

The practical implication: buy insurance before your pet's first vet visit. Once a condition appears on the medical record, it is potentially excludable forever.

Most standard policies cover dental accidents (a broken tooth from trauma) but exclude dental disease — the most common dental issue in pets. Periodontal disease, tooth root abscesses, and dental cleaning are typically not covered.

Professional dental cleaning under anaesthesia costs $300–$800 per session and is recommended every 1–3 years depending on breed. This is a meaningful ongoing cost that you will almost certainly pay out of pocket regardless of your insurance policy.

Some comprehensive policies offer dental add-ons. If you are purchasing for a breed prone to dental problems (small breeds and brachycephalic breeds are at highest risk), check whether this add-on is available.

All policies have waiting periods — typically 14–30 days from the policy start date during which claims are not valid. This prevents owners from insuring an already-sick pet and immediately claiming.

Waiting periods vary by condition type. Accident cover often starts after 48–72 hours. Illness cover typically starts after 14 days. Some policies have extended waiting periods for orthopedic conditions (6 months for cruciate ligament issues is common in US policies).

Do not attempt to use insurance to cover a condition your pet already has. The claim will be rejected, and if the insurer identifies any attempt to misrepresent the situation, your policy may be voided.

Standard accident and illness policies do not cover routine preventive care: vaccinations, annual wellness exams, flea and tick prevention, heartworm medication, or routine neutering.

Some providers offer wellness add-ons that cover these costs for an additional premium ($15–$30/month). Whether these add-ons are worth it depends on your specific costs — calculate what you currently spend on preventive care and compare it to the add-on premium before purchasing.