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What documents should I attach to an Insurance Ombudsman complaint?

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

Two documents are mandatory on the Ombudsman's online form: a copy of your complaint to the insurer, and valid ID and address proof. Attach the insurer's rejection or reply, the full policy, a photograph if you file online, and the rest of your correspondence, including with the TPA. If the claim was rejected for a pre-existing disease or a waiting period, the Council for Insurance Ombudsmen also asks for your earlier policies covering the 48 months before the current one.

The Insurance Ombudsman Rules ask a complaint to set out the facts 'supported by documents', together with your loss and the relief you seek. The Council for Insurance Ombudsmen's pages and the online form say which documents it expects.[1]

The core documents

Documents for an Insurance Ombudsman complaint[1, 2, 3, 4, 5]
DocumentWhy it mattersOn the online form
Copy of your complaint to the insurerShows the prior written complaint the Rules requireMandatory
Valid ID and address proof (KYC)Identifies you as the complainantMandatory
The insurer's rejection, decision or partial-settlement letterShows what you dispute and when the one-year limit beganUpload if you have one
The full policy, all pagesThe wording the insurer relied on, read in fullUpload
PhotographAsked for with online complaintsUpload
Other correspondence with the insurer, broker or TPAFills in the story between the claim and the complaintOther documents

Add these when your case needs them

  • Earlier policies, for PED or waiting-period rejections: The Council's procedure page asks for copies of all old policies covering the 48 months before the current one if the claim was rejected on grounds of pre-existing disease or a waiting period. They show the cover you had before the current policy began.[4]
  • The claim papers: The claim form and what supported it: bills, the discharge summary and test reports for a health claim; the death certificate and claim form for a life claim; the survey report, estimate and bills for a motor claim.
  • Medical or expert evidence: A letter from the treating doctor that addresses the insurer's stated reason. See asking your doctor for a letter.
  • Proof of dates: Email headers, postal or courier receipts, acknowledgements with reference numbers, and the token number if you also complained on Bima Bharosa.[6]
  • If you complain as a nominee or legal heir: A document showing your connection to the policy, such as the death certificate and the nomination or a legal heir certificate, since the Rules let a legal heir, nominee or assignee complain.[1, 2]

Preparing the files

  • Format and size: On the online form, each file must be a PDF or JPG of 10 MB or less.[2]
  • One document per file: Name each file by number, date and what it is, so the office can find it quickly.
  • Copies, not originals: The procedure page speaks of photocopies of the supporting documents sent with the complaint letter. Keep the originals. See whether to send originals.[4]
  • A numbered index: List the documents in date order and refer to them by number in the complaint and at any hearing.

Check with the official source

The Council's lists are not identical: its FAQ asks for KYC particulars and a photograph for online complaints, the procedure page lists the policy and correspondence, and the online form marks two documents mandatory. Treat the current form as the final word, and send anything the Ombudsman later asks for.[5, 4, 2, 1]

Insurance Claim Document ChecklistA checklist for a rejected, delayed, short-paid or cashless-refused claim in India: what to gather, why each document matters, and what it proves.

Sources

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

  1. 1. 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 14(2); 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 14(1); Insurance Ombudsman Rules, 2017 (consolidated as amended to 9 Nov 2023), rule 15(2)

  2. 2. Council for Insurance Ombudsmen

    Register Complaint - online grievance redressal portal (form text)

    Accessed 2026-10-09 · Cited at: cioins.co.in/Complaint/Online, 'Documents' section; the other uploads (rejection letter, photograph, policy, other documents) carry no asterisk (re-read 10 Oct 2026); cioins.co.in/Complaint/Online, opening confirmation; cioins.co.in/Complaint/Online, 'Documents' section (re-read 10 Oct 2026)

  3. 3. Council for Insurance Ombudsmen

    FAQs to lodge an online complaint with Insurance Ombudsman

    Accessed 2026-10-09 · Cited at: cioins.co.in/FAQ_Online, Q2 (the list continues '4.Copy of Insurance Policy 5. Photograph 6. Any other document'; re-read 10 Oct 2026)

  4. 4. Council for Insurance Ombudsmen

    Procedure to lodge a complaint with Insurance Ombudsman

    Accessed 2026-10-09 · Cited at: cioins.co.in/Procedure/Index, list of supporting documents (re-read 10 Oct 2026); cioins.co.in/Procedure/Index, last paragraph (re-read 10 Oct 2026); cioins.co.in/Procedure/Index

  5. 5. Council for Insurance Ombudsmen

    General FAQs and 'Insurance Ombudsman scheme made easy to understand'

    Accessed 2026-10-09 · Cited at: cioins.co.in/Faqs, General FAQs Q7 (the list continues 'e) Copy of Insurance Policy f) Any other document(s)'; re-read 10 Oct 2026)

  6. 6. IRDAI - Bima Bharosa

    Bima Bharosa - FAQ/Help

    Accessed 2026-10-09 · Cited at: bimabharosa.irdai.gov.in/Home/FAQ, Q3

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.

More on ombudsman complaints

Insurance Ombudsman Complaint: Documents to Attach | ClaimAssure