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 — a rejection can be challenged, and the route depends on the reason the insurer gave. The trick is knowing which playbook to use.

1. "Pre-existing disease" rejection

The insurer says your condition existed before the policy started. It is sometimes cited even where the disease first appeared after the policy began.

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, which show whether the condition was recorded before the policy date.
• 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 did not disclose a medical condition when you bought the policy.

How to fight back:

• Show that the alleged condition is unrelated to the claim. That is an argument, not a guarantee. The Supreme Court held a repudiation unjustified where the concealed ailment had nothing to do with the cause of death and was not life-threatening (Civil Appeal No. 8245 of 2015, order of 5 October 2015, a life policy). A three-judge bench later distinguished that ruling where a serious condition, treated shortly before the policy, had not been disclosed (Civil Appeal No. 3397 of 2020, decided 9 October 2020). And in a mediclaim case the Court held that an inaccurate answer about a known material condition entitles the insurer to repudiate (Civil Appeal No. 2776 of 2002, decided 10 July 2009).
• After 60 continuous months of cover (porting counts), the insurer cannot contest the claim for non-disclosure except on established fraud (IRDAI (Insurance Products) Regulations 2024, Schedule III cl. 8).
• If the agent filled the proposal form, ask for a copy of it — the insurer must send you one with the policy. The Supreme Court has held a proposer generally bound by a signed proposal form even where an agent filled it in, so build the argument on what you actually told the agent.

3. "Treatment not medically necessary" rejection

The insurer claims your hospitalisation was not needed.

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 on the specific waiting-period list, that waiting period cannot be the reason — though the initial 30-day period, the pre-existing-disease period or an exclusion may still apply.

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. Under IRDAI's 2024 master circulars, the insurer and its TPA must collect the required documents from the hospital themselves, and no claim may be rejected or closed for want of documents.
• 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 — optional: the regulator takes it up with the insurer, but the Ombudsman does not require it
3. Insurance Ombudsman — free; it can award up to ₹50 lakh
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.

A rejection you never answer stays a rejection. Do not leave yours unanswered.