Why Insurance Claims for Radiation Get Rejected — And How to Prevent It

Most radiation therapy claims are rejected on paperwork rather than on medicine. The usual causes are a pre-authorisation that was never taken or never approved, a policy waiting period that has not finished, a day-care coding mismatch on the hospital bill, documents that are incomplete or inconsistent with the treatment plan, or treatment taken outside the insurer's network when the policy allows cashless settlement only inside it. A repudiation letter has to state the exact clause relied on, and that clause is where any appeal begins. Nearly all of these causes are preventable if they are checked before your first session rather than after the bill is raised.

The reasons cluster into six groups: missing or late pre-authorisation for a cashless claim; a waiting period for cancer treatment that has not yet elapsed; a pre-existing-disease or non-disclosure dispute traced back to the proposal form; a day-care classification mismatch, where radiotherapy is not coded as the day-care procedure your policy lists it as; incomplete or inconsistent documentation, such as a prescription that does not match the technique billed; and treatment at a centre outside your insurer's network. A sub-limit or co-payment that reduces the payout is a partial settlement, not a rejection, though many families read the two as the same thing.

Start with the repudiation letter and identify the exact policy clause quoted, because your appeal has to answer that clause and nothing else. Ask your treating team for a written clarification addressing it, then submit a written representation to your insurer's Grievance Redressal Officer with the full document set attached. If there is no reply, or the reply does not satisfy you, escalate to IRDAI through the Bima Bharosa grievance portal. If the matter is still unresolved after the insurer has had its statutory window, you can approach the Insurance Ombudsman for your area, which is free and does not need a lawyer. Keep every acknowledgement and reference number.

IRDAI's Master Circular on Health Insurance (2024) sets defined windows: an insurer is expected to decide a cashless authorisation request within one hour of receiving it, and to give final authorisation within three hours of the discharge request. For a reimbursement claim, the long-standing regulatory expectation is a decision within thirty days of receiving the last necessary document, with a longer window only where an investigation is genuinely required. If a claim is repudiated, the insurer must give the reason in writing with reference to the policy clause. Ask for that letter in writing if you have only been told verbally.

There is a limit. Under IRDAI's health insurance rules as updated in 2024, once a policy has run continuously for sixty months a moratorium applies, and the claim cannot be contested on grounds of non-disclosure or misrepresentation, except where established fraud is proved or the treatment falls under a permanent exclusion written into the policy. Below that threshold an insurer can still question what was declared at the proposal stage. If your rejection letter cites non-disclosure, check the date your continuous coverage began before you accept it, because that single date can decide the outcome of the appeal.

Do the checking before the first session, not after the bill. Confirm in writing that radiotherapy is listed as a day-care procedure under your exact policy, that your waiting period has elapsed, and whether pre-authorisation is required and how long it takes. Ask whether the centre where your radiotherapy will be delivered is inside your insurer's network for cashless settlement. Keep the prescribed technique named consistently across the prescription, the pre-authorisation form and the final bill. Intimate the claim within the timeline your policy states. CION's scheme desk runs this check alongside your treatment plan, free of charge, before treatment starts.