Scenario: an admission called 'not medically necessary' — building the clinical evidence

Written for policyholders in India · Last reviewed 2026-10-10

This walkthrough follows an invented claim rejected because a short hospital stay for fever and a falling platelet count was 'not medically necessary'. It sets the policy's definition beside the hospital records, shows what a treating doctor's letter should address, and what to ask the insurer about how it reached the decision. It does not say how the dispute ends.

Illustrative example

This is an illustrative example, not a real person's case. The people, dates and documents are invented to show the method, and nothing here says how such a dispute would end.

Illustrative example

The situation. A man in his late thirties is admitted for two days with high fever and a falling platelet count. He is monitored, given intravenous fluids and discharged once the count stabilises. The insurer rejects the reimbursement claim: 'admission not medically necessary; could have been managed on an out-patient basis'.

What 'medically necessary' means in a policy

Start with the definition in your own policy wording. One insurer's wording, for example, defines medically necessary treatment as treatment, tests, medication or a hospital stay that is required for the medical management of the illness, does not exceed the level of care needed to provide safe, adequate and appropriate care, is prescribed by a medical practitioner, and conforms to accepted professional standards.^[1]

The same wording defines hospitalisation as admission for at least 24 consecutive in-patient hours, except for specified procedures. A two-day stay meets that time test, so the dispute is about necessity, not duration.^[1]

Matching the records to each part of the definition

The example definition, part by part, and the records that speak to it^[1]
Part of the definition	Records that address it
Required for the medical management of the illness	The doctor's admission advice with its reason; the platelet counts and other results across the stay
No more than the level of care needed	Monitoring charts and nursing notes showing what was watched and how often; the treatment given, such as intravenous fluids
Prescribed by a medical practitioner	The signed and dated note or prescription advising admission
Accepted professional standards	The treating doctor's letter explaining why in-patient care was the accepted course for these readings

A letter from the treating doctor can tie these records together: it should answer the insurer's stated reason, refer to the readings in the records, and explain why monitoring in hospital rather than at home was needed. What a doctor's letter should cover and getting the hospital records help with both.

Asking the insurer how it decided

The clause: A rejection must refer to the specific policy terms it relies on; 'not medically necessary' without a clause is incomplete.^[2]
The committee: A health claim cannot be repudiated without the approval of the insurer's Product Management Committee or its Claims Review Committee, which independently takes the final decision on every repudiation. Ask whether it reviewed this claim.^[2]
The opinion relied on: If the insurer relied on a medical opinion of its own, ask for a copy. See asking for the documents the insurer relied on.

If it goes to the Ombudsman

A total repudiation is a ground the Insurance Ombudsman hears, once the conditions for going there are met, starting with a written complaint to the insurer. The Ombudsman decides on the pleadings and the evidence on record, and may obtain the opinion of professional experts where a case warrants it, so the records and the doctor's letter are what the case rests on.^[3]

Sources

The official documents this page relies on. Rules change: where it matters to your claim, check the current version at the source.

1. The New India Assurance Co. Ltd.
Arogya Sanjeevani Policy - Policy Clauses (UIN NIAHLIP25044V022425)
Accessed 2026-10-09 · Cited at: New India Assurance Arogya Sanjeevani Policy wording (UIN NIAHLIP25044V022425), definition 3.35(a); New India Assurance Arogya Sanjeevani Policy wording (UIN NIAHLIP25044V022425), definition 3.35(b)-(c); New India Assurance Arogya Sanjeevani Policy wording (UIN NIAHLIP25044V022425), definition 3.35(d); New India Assurance Arogya Sanjeevani Policy wording (UIN NIAHLIP25044V022425), definition 3.23
2. IRDAI (verbatim copy hosted by the Institute of Actuaries of India)
Master Circular on Health Insurance Business, Ref IRDAI/HLT/CIR/PRO/84/5/2024 dated 29.05.2024 (17 pages, Version 1)
Dated 2024-05-29 · Accessed 2026-10-09 · Cited at: Master Circular on Health Insurance Business (IRDAI/HLT/CIR/PRO/84/5/2024, 29 May 2024), Chapter I, para 17(b); Master Circular on Health Insurance Business (IRDAI/HLT/CIR/PRO/84/5/2024, 29 May 2024), Chapter I, para 17(a); Master Circular on Health Insurance Business (IRDAI/HLT/CIR/PRO/84/5/2024, 29 May 2024), Chapter II, A. General Principles, I(4)(b)
Read from a copy hosted at actuariesindia.org · Official page
3. Council for Insurance Ombudsmen (hosting the Ministry of Finance rules)
The Insurance Ombudsman Rules, 2017 [updated as on 9.11.2023] - consolidated copy
Dated 2023-11-09 · Accessed 2026-10-09 · Cited at: Insurance Ombudsman Rules, 2017 (consolidated as amended to 9 Nov 2023), rule 13(1)(a)-(b), as substituted in 2021; Insurance Ombudsman Rules, 2017 (consolidated as amended to 9 Nov 2023), rule 14(3)(a); Insurance Ombudsman Rules, 2017 (consolidated as amended to 9 Nov 2023), rule 17(1); Insurance Ombudsman Rules, 2017 (consolidated as amended to 9 Nov 2023), rule 15(3)

ClaimAssure is an independent private platform. It is not an insurer, IRDAI, Bima Bharosa or the Insurance Ombudsman, it never files anything on your behalf, and it cannot promise any outcome. What it does is read your documents and show you what they say.