Why Health Insurance Claims Get Rejected — and What You Can Do

Reason 1: Pre-existing disease (PED)

You file a claim. The insurer writes back: "pre-existing condition." They mean the illness existed before the policy start date and falls within the waiting period. It is the most common rejection reason — and it has a time limit.

In April 2024, IRDAI reduced the maximum PED waiting period from 4 years to 3 years (36 months). Once those 36 months pass, the insurer cannot use PED as a reason. (IRDAI Insurance Products Regulations 2024; BusinessToday, 12 April 2024)

There is a second, stronger rule. After 5 years of continuous coverage (reduced from 8 years in 2024), the insurer cannot reject any claim on grounds of non-disclosure or misrepresentation — regardless of what you did or did not declare. Keep your policy active for 5 years and the PED question disappears entirely. (IRDAI regulations; HinduBusinessLine, 13 April 2024)

A real case

Max Bupa rejected a maternity claim because the patient had not disclosed thalassemia minor (a genetic blood trait). The District Consumer Commission-II, Chandigarh reversed the rejection. The commission held that thalassemia minor had no connection to the delivery and the insurer's repudiation was wrongful.

(Source: Dilpreet Singh Gandhi v. Max Bupa Health Insurance, Case CC/AB1/44/CC/236/2021; LiveLaw, February 2026)

What to do

• Check your policy start date and calculate the PED waiting period. If 3 years have passed, push back.
• If 5 years of continuous coverage have passed, the insurer cannot reject for non-disclosure regardless of what was or was not declared.
• If the condition they cite has no medical connection to the treatment (like thalassemia minor and a delivery), dispute it.

Reason 2: "Not medically necessary"

The rejection letter says the hospitalisation was not required — the treatment could have been done as an outpatient. It feels like the insurer is second-guessing your doctor. In practice, the decision usually comes down to one document.

That document is the discharge summary. If it does not clearly state that active treatment was administered and that hospitalisation was medically required, the insurer treats the admission as optional. The fix happens before discharge, not after rejection.

What to do

• Before discharge, ask your doctor to review the discharge summary. It must state the medical necessity of admission and the active treatment provided.
• If the discharge summary is vague or incomplete, ask the hospital to correct it before you file the claim. You have the right to accurate medical records.
• Phrases like "admitted for observation" or "admitted for investigation" weaken your claim. The summary should say what treatment was given.

Reason 3: Room rent proportionate deduction

This one catches almost everyone off guard. You picked a slightly nicer room — maybe ₹8,000/day instead of the ₹4,000/day your policy covers. You expect to pay the ₹4,000 gap. Instead the insurer cuts your entire claim.

How it actually works

The insurer does not just deduct the room-cost gap. It reducesall linked charges in the same ratio. So if you used a room at 2× your limit, every linked charge gets halved.

What is exempt

ICU charges, medications, implants, and diagnostics are typically exempt from proportionate deduction. ICU charges are exempt because ICU does not have "room categories" — there is only one ICU rate.

(Source: IRDAI Circular IRDA/HLT/REG/CIR/150/07/2016)

What to do

• Before admission, check your policy's room rent sub-limit. Ask the hospital which room falls within it.
• If you must use a costlier room, understand that the deduction affects more than just the room charge.
• If the hospital does not have room categories (single-rate billing), the proportionate deduction should not apply. Dispute it if applied anyway.
• See our full deduction guide for the complete calculation method.

Reason 4: Incomplete documentation

A missing receipt. A filing deadline missed by two days. A discharge summary the doctor forgot to sign. These are the rejections that hurt most because they had nothing to do with whether the treatment was covered — and they are entirely preventable.

What to do

• File within 15-30 days of discharge (check your specific policy terms for the exact deadline).
• Collect all original documents at discharge: itemized bill, discharge summary, prescriptions, lab reports, payment receipts.
• Before leaving the hospital, check that the discharge summary is signed by the treating doctor and includes the diagnosis, treatment given, and admission/discharge dates.
• Keep photocopies of everything you submit.

Reason 5: Policy exclusions and waiting periods

Sometimes the procedure simply is not covered — it is listed as an exclusion, or the specific waiting period has not yet passed (maternity is typically 2-3 years). This feels unfair when you are holding a bill, but the fix is knowing what your policy says before you need it.

Since 2024, every insurer must give you a Customer Information Sheet (CIS) — one page, plain language, listing your coverage, exclusions, and waiting periods. If you never got one, ask your insurer for it now. (IRDAI Master Circular on Health Insurance, 29 May 2024)

What to do

• Read the CIS before you need to use the policy — not after a rejection.
• If the insurer applies an exclusion that contradicts the CIS, dispute it with a copy of the CIS attached.
• If you believe the exclusion is unfair (e.g., rejecting a claim for a condition clearly unrelated to the exclusion), escalate to the Ombudsman.

What changed in 2024 — and why it matters to you

On 29 May 2024, IRDAI replaced 55 separate circulars with one Master Circular. Several changes directly affect claim rejections:

• PED waiting period: reduced from 4 years to 3 years
• Moratorium period: reduced from 8 years to 5 years — after this, the insurer cannot reject for non-disclosure
• Cashless authorisation: within 1 hour of request from hospital
• Final authorization at discharge: within 3 hours
• Customer Information Sheet (CIS): mandatory in plain language with every policy
• Fraud analytics: technology-based fraud detection now mandatory for all insurers

(Source: IRDAI Master Circular, 29 May 2024; The Hindu, 29 May 2024; Indian Express, 30 May 2024)

Your claim was rejected. Here is your leverage.

Most people stop at the rejection letter. The ones who push back — with the right channel, in writing, with a specific ask — get results disproportionately often. The system is set up to resolve complaints; most complainants just never reach the second rung.

1. Write to the insurer's Grievance Redressal Officer.Put it in writing with a specific ask (approve the claim, or explain the exact policy clause that supports the rejection). Expect a response within 15 days.
2. Insurance Ombudsman. Free. No lawyer needed. Virtual hearing available. The Ombudsman can order the insurer to pay if the rejection violates policy terms. Resolution typically takes 3-6 months. There are 17 Ombudsman centres across India.(Source: CIO Annual Report 2023-24)
3. IRDAI Bima Bharosa Portal (igms.irda.gov.in). File online. This runs in parallel with the Ombudsman — filing on both channels simultaneously is allowed and often effective. Insurers frequently respond within 15 days of a Bima Bharosa filing.
4. Consumer Court via the e-Jagriti portal. Claims up to ₹50 lakh go to the District Commission. Filing fee: nil for claims up to ₹5 lakh; ₹200 for ₹5-10 lakh; ₹400 for ₹10-20 lakh; ₹1,000 for ₹20-50 lakh. You have 2 years from the date the cause of action arose.(Source: Consumer Protection Act 2019, Section 69; CP Amendment Rules 2022)

Frequently asked questions

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