Rejected as 'not a hospital', 'under 24 hours' or 'investigation only'? Read the definition — it binds the insurer too.
Three rejections that come from definitions rather than from your medical facts: what counts as a hospital, what counts as hospitalisation, and what counts as treatment. Your policy wording sets each one, and the insurer has to apply it as written.
Reviewed by the BimaHaq Insurance Grievance Desk — BimaHaq's in-house insurance-grievance team — specialists in IRDAI grievance redressal, the Insurance Ombudsman process, and policyholder rights in India. · Last reviewed 2026-08-31
These three rejections are about definitions in your policy wording, not about whether you were ill. Most health policies define a 'hospital' as a facility that is EITHER registered under the Clinical Establishments Act or with the state or local authority, OR meets every listed minimum criterion (round-the-clock qualified nursing and medical staff, a minimum number of in-patient beds that depends on the town's population, an operation theatre of its own, daily patient records) — so a registered facility generally qualifies whatever its bed count. 'Hospitalisation' is usually defined as at least 24 consecutive hours of in-patient care, except for the day-care treatments the policy itself lists, so a shorter stay for a listed procedure is within cover. An 'investigation only' objection is decided by the discharge summary: what treatment was actually given, and the treating doctor's record of why admission was necessary. Under IRDAI's 2024 Master Circular on Health Insurance Business, no claim may be repudiated without the insurer's Claims Review Committee, and the rejection must set out the specific policy terms it relies on — so ask which limb of which definition the insurer says was not met, and answer that limb with documents.
Why insurers reject on this ground
The insurer says the facility does not meet the policy's definition of a hospital (too few beds, no operation theatre, no round-the-clock doctor, not registered), or that the stay was shorter than the 24 hours the definition of hospitalisation requires and the procedure is not on the day-care list, or that the admission was only for diagnosis and evaluation with no active treatment — and treats any of these as taking the whole claim outside cover.
When you can challenge it
Start from the wording, because the same definition that the insurer relies on is the one that limits it. On 'not a hospital', check which limb is in issue: if the facility is registered under the Clinical Establishments (Registration and Regulation) Act 2010 or a state or municipal law, most wordings treat registration alone as enough, and the bed count and the rest of the minimum criteria do not arise; if the insurer relies on the criteria limb, ask the hospital for its registration certificate, bed strength and staffing and put them against each criterion. On the 24-hour rule, read the definition of hospitalisation and the day-care list in your own policy: a listed day-care procedure needs no 24-hour stay, and a stay that did cross 24 hours is not defeated by the procedure being on that list. On 'investigation only', the discharge summary and the in-patient case papers decide it — what medicines, procedures or monitoring were actually given — and the treating doctor's note on why admission was necessary carries weight: consumer fora have repeatedly held that the treating doctor, not the insurer's desk, decides the line of treatment, and that an admission the doctor found necessary is not turned into an 'investigation' by hindsight. Two rules from IRDAI's 2024 Master Circular on Health Insurance Business apply to all three: no claim may be repudiated without the approval of the insurer's Claims Review Committee, and the rejection must give full details with reference to the specific terms and conditions of the policy — a bare 'does not meet the definition' is not that. Be realistic about the harder cases: a genuinely unregistered facility that also fails the minimum criteria, or a same-day stay for a procedure that is neither listed as day-care nor otherwise treated as one, are difficult, and the answer then lies in the facts you can document rather than in the wording.
How to fight this rejection
Get the rejection with the exact definition it relies on
Ask the insurer, in writing, for the repudiation letter naming the definition or exclusion — hospital, hospitalisation, day care, or the investigation-only clause — and the limb of it the insurer says was not met. The 2024 Master Circular requires the rejection to reference the specific policy terms; hold it to that.
Read the definition in your own policy wording
Open the policy wording (not only the schedule) and read the definitions of 'Hospital', 'Hospitalisation' and 'Day Care Treatment', and the day-care list. Note the 'either/or' in the hospital definition and the exception for listed day-care procedures. The Customer Information Sheet that came with the policy summarises the exclusions and waiting periods too.
Collect what proves the hospital qualifies
From the hospital: its registration certificate under the Clinical Establishments Act or the state or municipal law, its bed strength, and a letter confirming round-the-clock nursing and medical cover and an operation theatre. If it is registered, say so first — the other criteria are usually not needed.
Collect what proves the admission was treatment, not a test
The discharge summary with admission and discharge times, the in-patient case papers showing the medicines, procedures and monitoring given, and a one-paragraph certificate from the treating doctor stating why in-patient admission was medically necessary. If the procedure is on your policy's day-care list, quote the list.
Put the definition and the facts side by side in your grievance
Write to the insurer's Grievance Redressal Officer quoting the definition from the policy, the limb relied on, and the document that answers it — registration certificate, discharge summary, the day-care list, the doctor's certificate. Ask for the Claims Review Committee's reasons if they were not given.
Raise a written grievance with the insurer's GRO
Send a dated grievance to the insurer's Grievance Redressal Officer setting out why the rejection is wrong. The insurer must acknowledge it immediately and resolve it within 14 days.
Escalate to IRDAI on Bima Bharosa
If it isn't resolved in time or the reply is unsatisfactory, register the complaint on IRDAI's Bima Bharosa portal.
Take it to the Insurance Ombudsman
Free, and the award binds the insurer. The Ombudsman can award up to ₹50 lakh, and the Council for Insurance Ombudsmen applies that same figure to the claim value at filing — so above it, expect to be refused at intake and take the dispute to the consumer commission instead. File within one year of receiving the insurer's rejection — or, if it never replied, within one year of one month after you sent your representation.
Common questions
The insurer says the nursing home where I was treated is 'not a hospital'. Is the claim finished?
Not by that statement alone. Most policy wordings define a hospital as a facility that is either registered under the Clinical Establishments Act or with the state or local authority, or that meets all the listed minimum criteria (round-the-clock nursing and medical staff, a minimum number of in-patient beds depending on the town's population, an operation theatre, daily patient records). If the facility is registered, that limb is usually enough on its own. Ask the insurer which limb it says was not met, and answer it with the hospital's registration certificate and a letter on its beds and staffing.
I was discharged in under 24 hours. Does that end the claim?
Only if the procedure is not one your policy treats as day care. Policies define hospitalisation as at least 24 consecutive hours of in-patient care, but except the day-care treatments they list — a stay of any length for a listed procedure is within cover. Read the day-care list in your wording; if your procedure is on it, quote it. If it is not, the question becomes whether the admission was medically necessary in-patient treatment, which the discharge summary and the treating doctor's note decide.
The insurer says I was admitted 'only for investigation'. What answers that?
The record of what was actually done. The discharge summary and in-patient case papers showing the medicines, procedures and monitoring given, and the treating doctor's certificate on why admission was necessary, are the evidence. Consumer fora have repeatedly held that the treating doctor decides the line of treatment and that an admission the doctor found necessary is not turned into an investigation by hindsight — but an admission where genuinely nothing but tests happened is a hard case, so be honest with yourself about what the papers show.
Does the hospital have to be in the insurer's network to count as a hospital?
No. The network decides whether cashless is available, not whether the facility is a hospital under the policy. Treatment at a non-network facility that meets the definition is claimed by reimbursement — and IRDAI's 2024 master circular requires a reimbursement claim to be settled within fifteen days of submission.
Must the insurer explain which definition it relied on?
Yes. Under IRDAI's Master Circular on Health Insurance Business (29 May 2024), no claim may be repudiated without the approval of the insurer's Claims Review Committee, and where a claim is rejected the details must be conveyed with full reference to the specific terms and conditions of the policy. A rejection that says only 'does not meet the definition of hospital' has not done that — ask for the limb and the reasons.
See the full escalation ladder for a rejected claim, or use a free complaint-letter template.
This guide is general information about the insurance-grievance process in India, not legal advice, and figures (timelines, monetary limits, jurisdiction) can change — verify against the official sources linked above before you rely on them.
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