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

A rejected health claim is not the end of the matter — most rejections are challengeable, and many are reversed on the insurer's own internal review. 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 the IRDAI Master Circular on Health Insurance Business dated 29 May 2024 (https://irdai.gov.in/circulars).

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.
• Cite the IRDAI Master Circular on Health Insurance Business dated 29 May 2024 (https://irdai.gov.in/circulars): a claim is not to be repudiated without review by the insurer's claims review committee — ask for that committee's reasoning in writing.
• Consumer courts have repeatedly held that an insurer cannot substitute its own desk opinion for the clinical judgment of the treating doctor who actually examined you — a rejection on medical grounds needs contrary medical evidence, not an administrative view that you could have been managed at home.

4. "Waiting period not over" rejection

Specified conditions carry a waiting period — commonly two years, and capped at 36 months by the IRDAI (Insurance Products) Regulations 2024. A pre-existing disease waiting period is capped at 36 months of continuous coverage too, down from four 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, and the claim file never moves.

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 resolve your grievance within 14 days
2. IRDAI Bima Bharosa portal — the regulator takes it up with the insurer
3. Insurance Ombudsman — free, for claims up to ₹50 lakh (also the most it can award)
4. Consumer forum — for damages and interest

BimaHaq's role

Our Claim Strategy Note gives you a written, specialist-approved assessment of whether the rejection holds up — and your exact next steps. If it does not hold up, we can help at every rung: our Bima Bharosa Filing service prepares your complete IRDAI grievance and assists you step by step through filing it on the portal, and we can prepare your Ombudsman escalation and stay with you through the process.

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