Health Insurance Claim Rejected? Reasons and What to Do

A rejection isn't always final. Learn the common reasons claims get denied, the step-by-step way to respond, and how to escalate to the Ombudsman.

By Aniket Bang, CFA, CRO, IndSure

Your health insurance claim was rejected. Here is what to do.

A rejected claim is not always the end of the road. Many rejections are about process or paperwork, not a genuine lack of cover, and those can be fixed. The key is to understand why it was rejected, then respond in the right order.

Why claims get rejected

  • Non-disclosure: a pre-existing condition or habit not declared at purchase. The single biggest reason.
  • Waiting period: claiming for something still inside its PED or initial waiting window.
  • Exclusions: the treatment is a permanent exclusion under the policy.
  • Documentation: missing discharge summary, itemised bills, or investigation reports.
  • Cashless denial: often a network or eligibility issue, not a final rejection. You can still file reimbursement.

A calm, step-by-step response

  1. Get the reason in writing. Insurers must state the ground for rejection. Read it against your policy wording.
  2. Separate "denied" from "needs documents". Many rejections are really requests for missing paperwork you can supply.
  3. Gather evidence. Discharge summary, all bills, prescriptions, reports, and your policy schedule.
  4. Raise a grievance with the insurer. Use their grievance channel with a clear, factual note and documents.
  5. Escalate. If unresolved, the Insurance Ombudsman handles eligible complaints. Keep every communication.

Prevent the next one

Most rejections trace back to purchase-time choices: full disclosure, understanding waiting periods, and knowing your exclusions. Run your policy through our policy checker to surface the clauses that decide claims before you ever file one.

Frequently asked questions

Can a rejected health insurance claim be reopened?

Often yes. If the rejection was for missing documents or a process issue, supplying the paperwork and raising a grievance can get it reconsidered. Genuine exclusions and non-disclosure are harder to overturn.

What is the Insurance Ombudsman?

An independent body that resolves eligible policyholder complaints against insurers, free of cost, after you have first raised a grievance with the insurer. Keep all documents and correspondence.

Is a cashless denial the same as claim rejection?

No. Cashless denial is usually an eligibility or documentation issue at the hospital. You can typically pay and file a reimbursement claim with the same documents afterwards.

How do I avoid claim rejection?

Disclose all conditions and habits at purchase, understand your waiting periods and exclusions, and keep complete documentation. Most rejections stem from purchase-time gaps, not the claim itself.