Top 5 Reasons Health Insurance Claims Get Rejected in India (And How to Fight Back)

Roughly one in seven cashless health claims in India is rejected at first attempt. Most of those rejections can be reversed. The trick is knowing which playbook to use.

1. "Pre-existing disease" rejection

This is the most common reason given. The insurer says your condition existed before the policy started. They cite this even when the disease appeared years after policy issuance.

How to fight back:

• Ask for the rejection letter in writing. By law, it must list the specific clause invoked.
• Pull your old medical records. If there is no record of the condition before the policy date, the insurer has no basis.
• Get a treating doctor's certificate confirming the date of first diagnosis.
• File a grievance with the insurer citing IRDAI Master Circular on Health Insurance.

2. "Non-disclosure" rejection

The insurer says you hid a medical condition while buying the policy. This often means a routine BP reading or a five-year-old health scare.

How to fight back:

• Show that the alleged condition is unrelated to the claim. Non-disclosure of an unrelated condition cannot void a claim — courts have upheld this in dozens of judgments.
• If the agent filled the proposal form, demand a copy. Many forms are pre-filled by agents.

3. "Treatment not medically necessary" rejection

The insurer claims your hospitalisation was not needed. This is common in dengue, eye surgery, and chemotherapy cases.

How to fight back:

• Get a discharge summary that clearly states why hospitalisation was required.
• Ask the treating doctor for a separate medical necessity letter.
• Reference IRDAI guidance: an insurer cannot override the treating doctor without an independent medical board.

4. "Waiting period not over" rejection

Some conditions have a waiting period of 2 to 4 years. Insurers sometimes deny claims that fall outside the waiting list.

How to fight back:

• Read the waiting period clause carefully. It is in your policy schedule.
• If the condition is not listed, the insurer must pay.

5. "Documentation incomplete" rejection

The insurer asks for more documents in a loop. By the time you submit them, the 30-day claim window closes.

How to fight back:

• Submit every document in one bundle with a covering letter listing each item.
• Ask for a single consolidated query list, not piecemeal requests. IRDAI rules forbid repeated queries.
• If the insurer keeps adding queries, file a grievance citing TAT violations.

Escalation path

1. Insurer's grievance officer — must respond in 15 days
2. IRDAI Bima Bharosa portal — 30 days
3. Insurance Ombudsman — up to ₹50 lakh, free of cost
4. Consumer forum — for damages and interest

BimaHaq's role

Our Claim Rejection Review (₹4,999) gives you a written legal opinion on whether the rejection holds up. If it does not, we draft your grievance and ombudsman complaint and walk with you till the money lands in your account.

Most claims are not lost. They are abandoned. Do not abandon yours.