Why Health Insurance Claims Get Rejected — And How to Avoid It

The claim is decided long before the hospital

Most rejections are not arbitrary. They come from the proposal form, the waiting period clauses, or missing paperwork at discharge.

Nine common reasons

1. Non-disclosure of pre-existing conditions. Diabetes, hypertension and thyroid conditions must be declared, even if controlled.
2. Waiting periods. Most policies have a 30-day initial wait, and 2 to 4 years for specific conditions.
3. Room-rent limits. Exceeding the eligible room category can scale down the entire claim.
4. Exclusions. Cosmetic treatment, dental, and certain day-care procedures may be excluded.
5. Policy lapse. A missed renewal restarts waiting periods.
6. Treatment at a non-network hospital without following the reimbursement process.
7. Missing documents such as the discharge summary or original bills.
8. Late intimation beyond the notification window.
9. Mismatch in patient details between the policy and hospital records.

What to do before you ever claim

• Read the policy wording once, particularly exclusions and sub-limits.
• Keep the health card and insurer helpline saved in your phone.
• Renew before the due date, every year, without a gap.
• Update nominee and contact details after any life change.

At the hospital

Inform the insurer within 24 hours of an emergency admission, and 48 hours before a planned one. Ask the hospital insurance desk for the pre-authorisation form early — it prevents most cashless delays.

If a claim is rejected

Ask for the rejection reason in writing, then respond with documents that address that specific reason. Escalate to the insurer's grievance officer, and then to the Insurance Ombudsman if needed.