Co-pay, Sub-limit and Non-Medical Deductions in Health Insurance: How to Dispute Them

Your insurer settled only part of your hospital bill — citing co-pay, a disease sub-limit, or non-medical expenses. This guide shows you how to tell a legitimate deduction from a wrong one, audit your bill line-by-line, and escalate through IRDAI and the Ombudsman to recover what you are owed.

Reviewed on: 2026-05-29.

This guide is for anyone who received a health insurance settlement that was less than the full hospital bill and the shortfall was explained with words like “co-payment applicable,” “sub-limit exhausted,” “non-medical item deducted,” or “IRDAI exclusion list.” You may be on an individual policy, a family floater, a group mediclaim through your employer, or a government-scheme policy.

It is most directly useful if you are dealing with:

• A co-pay clause that you were never told about clearly, or one that is being applied to amounts it should not cover.
• A disease-specific sub-limit on cataract surgery, hernia, knee replacement, or another listed condition, which you believe was misapplied or was not disclosed.
• Deductions for items on the hospital bill that the insurer calls “non-medical” — consumables, administrative charges, toiletries, and similar items — where you believe the hospital included them in a bundled procedure or room charge, or the item should not be on the exclusion list.

This guide does not cover claim rejections based on pre-existing disease waiting periods (see our guide on pre-existing disease claim rejection and appeal) or the proportionate-deduction formula triggered by room-rent caps (see Health Insurance Room Rent Cap and Proportionate Deduction). For deductions of consumables specifically, also read Consumables Deducted from Health Insurance Claim.

Pull out every document connected to the claim. You need: the policy schedule (the one-page summary listing your sum insured, premium, and any co-pay or sub-limit clauses), the full policy wording or product brochure, the final settlement letter from the insurer or TPA, and the itemized hospital bill. If you only have a summary bill from the hospital, call the billing desk and ask specifically for the itemized or detailed bill — this is your right as a patient.

Highlight the deduction lines in the settlement letter. Write the total disputed amount on a sticky note.

Conduct your bill audit (see the step-by-step section). Compare each deducted rupee amount to the co-pay percentage, sub-limit, or non-payable item category that the insurer cited. The three questions to ask for each deduction:

1. Is this clause actually written in my policy schedule or policy wording?
2. Is the amount the insurer deducted arithmetically correct given that clause?
3. For non-medical deductions: is the item actually on the IRDAI exclusion list, and did the hospital bill it separately or bundle it into the room or procedure package?

For anything that fails any of these tests, flag it as disputed. Add those amounts up — that is your claim in the complaint you will write tomorrow.

Write and send your formal complaint email to the insurer's Grievance Redressal Officer (GRO). The template in this guide gives you a ready-to-use draft. Send it with all supporting documents attached as PDFs. Keep the sent-mail record and the delivery receipt. You have now started the formal dispute clock — the insurer must respond within 14 days under IRDAI regulations.

A co-pay (or co-payment) is a percentage of every eligible claim that you agreed at the time of purchase to bear yourself. If your policy has a 10% co-pay and the admissible claim is ₹2,00,000, you pay ₹20,000 and the insurer pays ₹1,80,000.

Co-pay is most common in:

• Senior-citizen policies (often mandatory at 10–20%).
• Top-up and super-top-up plans.
• Policies where you chose a lower premium in exchange for a co-pay clause.
• Government health schemes for certain beneficiary categories.

When a co-pay deduction is legitimate: The percentage and the categories it applies to are printed in your policy schedule. The arithmetic is correct.

When a co-pay deduction is wrong: There is no co-pay clause in your policy schedule. Or the co-pay is applied to items it was not meant to cover — for example, some policies apply co-pay only to day-care procedures, not to full hospitalisations. Or you bought the policy without being told about the co-pay (mis-selling).

A sub-limit is a rupee cap on a specific procedure or condition, regardless of your overall sum insured. It reduces the maximum the insurer will pay for that treatment, even if you have a much larger policy.

Common sub-limits include:

• Cataract surgery: Many older policies cap this at a few tens of thousands of rupees per eye. Actual surgery costs vary widely depending on the lens type and hospital.
• Hernia, gallbladder stones, knee/joint replacement: Often capped at a percentage of sum insured or a fixed rupee amount listed in the policy schedule.
• ICU charges: Some policies cap ICU at a daily rate (for example, a percentage of sum insured per day). Others link it to the room-rent ratio formula — but that is covered in the room-rent and proportionate deduction guide.
• Ambulance charges: Often capped at a fixed amount per hospitalisation.

EXAMPLE (labelled clearly): Suppose your policy has a ₹50,000 sub-limit on cataract surgery and the hospital charged ₹70,000. The insurer legitimately pays ₹50,000 and you bear ₹20,000 — if that sub-limit clause is printed in your policy schedule. If the policy schedule has no such clause, the full ₹70,000 should be eligible (subject to your sum insured).

When a sub-limit deduction is legitimate: The specific sub-limit (in rupees or as a percentage of sum insured) is printed in the policy schedule or the limitations table of the policy wording. The insurer applied the stated cap exactly.

When a sub-limit deduction is wrong: The sub-limit is not in your policy documents. The insurer applied a cap from an old version of the policy that was superseded at renewal. The insurer applied the sub-limit to associated expenses (for example, pre-operative diagnostics) that the sub-limit clause does not cover. The sub-limit was not disclosed when you bought the policy.

IRDAI has standardised a list of items that health insurers may exclude from coverage. The rationale is that some items are personal comfort items, administrative charges, or consumables that hospitals use as a cost centre. The list is divided into four categories:

Non-payable items typically account for 5–15% of a hospital bill depending on the procedure and hospital. While some of these deductions are legitimate, many hospitals bundle these items into packaged room or procedure charges — and when the insurer deducts them separately from a bundled bill, that deduction is wrong. Your itemized bill is the key evidence.

Take your settlement letter and your itemized hospital bill side by side. Create a simple three-column note: (1) item deducted, (2) reason the insurer gave, (3) your response. Work through each line:

• For every co-pay deduction: find the co-pay clause in your policy schedule. Check the percentage and the categories it covers. Verify the arithmetic on the admissible amount.
• For every sub-limit deduction: find the sub-limit clause. Check whether the cap stated there matches the cap applied. Check whether associated expenses (diagnostics, follow-up within the same admission) are excluded from the sub-limit or incorrectly included.
• For every non-medical deduction: look at the itemized bill. Was the item billed as a separate line, or was it part of a package? Is it genuinely on the IRDAI exclusion list? Did the treating doctor prescribe it? Is it the kind of item that would be considered a medically necessary consumable during the procedure?

At the end of this audit, you will have a list of deductions you accept and a list you dispute with reasons. The disputed total is the amount you are seeking to recover.

Before writing a formal complaint, email the TPA or the insurer's claims department and ask for the policy clause reference behind each disputed deduction. Ask specifically for the page number in the policy wording where the clause appears. Give them 7 working days to respond. This email creates a record and sometimes prompts the insurer to review and reverse incorrect deductions without a formal complaint.

If the response is unsatisfactory, or no response comes within 7 working days, write formally to the insurer's Grievance Redressal Officer (GRO). Every insurer must have a GRO. Find the name and email from the insurer's website or from your policy document. Use the complaint template provided in this guide. The insurer must acknowledge your complaint and respond within 14 days.

If the GRO's response is unsatisfactory, or if 30 days pass without a resolution, register your complaint on the IRDAI Bima Bharosa portal (bimabharosa.irdai.gov.in). This is free. You will need your policy number, the insurer's name, a brief description of the dispute, and the monetary amount in dispute. Note the complaint reference number for future use.

For more detail on this step and the next, see our guide on How to File an Insurance Complaint with IRDAI and the Health Insurance Claim Rejected guide.

If the Bima Bharosa complaint does not result in a satisfactory resolution, file with the Insurance Ombudsman in your territorial jurisdiction. The Ombudsman service is free, no advocate is required, and the Ombudsman's award is binding on the insurer. The Ombudsman handles disputes involving individual policies and awards up to ₹50 lakh (the limit was raised from ₹30 lakh in 2023 — verify the current limit on policyholder.gov.in at the time of filing). See our separate Insurance Ombudsman complaint format and guide for the specific form and document list you need.

Replace the text in square brackets with your own details before sending. This template is for the formal complaint to the Grievance Redressal Officer at Stage 2.

To, The Grievance Redressal Officer, [Insurer Name] / [TPA Name] [Address / Email of GRO — find on insurer website]

Subject: Formal Grievance — Disputed Deductions in Claim No. [Your Claim Number], Policy No. [Your Policy Number]

Dear Sir / Madam,

I am the policyholder / insured person under Policy No. [Policy Number], insured with [Insurer Name]. I was hospitalised at [Hospital Name, City] from [Admission Date] to [Discharge Date] for [brief diagnosis/procedure].

My claim was partially settled vide your letter / settlement advice dated [Settlement Letter Date]. The total amount deducted that I am disputing is Rs. [Total Disputed Amount], as follows:

DISPUTED DEDUCTIONS:

1. Co-pay deduction of Rs. [Amount]:

 My ground: [State reason — e.g., "The policy schedule I received at purchase does not mention any co-pay clause" OR "The co-pay clause applies only to Day Care procedures; this was an inpatient admission" OR "The co-pay percentage applied (X%) does not match my policy schedule (Y%)"]

2. Sub-limit deduction on [Procedure/Condition] of Rs. [Amount]:

 My ground: [State reason — e.g., "No sub-limit on [procedure] is mentioned in my policy schedule or policy wording" OR "The sub-limit of Rs. [stated limit] was applied to related diagnostic costs not covered by the sub-limit clause"]

3. Non-medical / non-payable items deduction of Rs. [Amount]:

 Items disputed: [list each item and amount — e.g., "Surgical gloves (Rs. X) — billed as part of procedure package, not separately; Pulse oximeter (Rs. Y) — bundled in room rent, not a separate item; Hand wash (Rs. Z) — no separate bill raised by hospital"]

I am attaching: - Copy of policy schedule (relevant pages) - Itemized hospital bill - Settlement / deduction letter dated [date] - Discharge summary - [Any other supporting document]

I request you to: (a) Provide the exact clause number and page in my policy wording that authorises each deduction. (b) Reverse any deductions not supported by a specific written policy clause. © Settle the balance of Rs. [Disputed Amount] forthwith.

Please acknowledge this complaint and respond within 14 days as required under IRDAI regulations.

If this grievance is not resolved to my satisfaction, I will escalate to IRDAI Bima Bharosa and the Insurance Ombudsman.

Yours sincerely, [Your Full Name] [Policy Number] [Contact Number] [Date] [Postal Address]

The Right to Information Act 2005 applies to public authorities. In the health insurance space, this means the four public sector general insurers: New India Assurance, Oriental Insurance, National Insurance, and United India Insurance. It also applies to public sector hospitals (government hospitals, CGHS empanelled government facilities, and public medical colleges).

RTI can be useful in the following situations:

• Obtaining your claim file: File an RTI with the PSU insurer asking for a copy of the claim processing file, the surveyor or TPA report, the underwriting notes, and the internal reasons for each deduction. This often reveals whether the deduction was based on a consistent policy or an ad hoc decision.
• Checking the insurer's underwriting guidelines: You can ask for the internal circulars or underwriting guidelines under which specific sub-limits are applied to certain diseases. If the insurer cannot produce a written guideline, that weakens their position in a dispute.
• Accessing the TPA's decision-making criteria: If a TPA is a government-run body or handles government scheme claims, RTI may reach its internal criteria for approving or disallowing non-medical items.
• Public hospital billing: If the dispute involves over-billing by a public hospital (government hospital or CGHS facility), you can use RTI to get the hospital's rate schedule, the standard package rates for the procedure, and internal billing circulars. This helps establish whether the hospital charged correctly and whether the insurer's deductions were justified.

To file an RTI with a PSU insurer, follow the instructions at File RTI Online. For the first-appeal process if the initial RTI response is unsatisfactory, see File a First Appeal under RTI Section 19. The RTI Playbook also covers how to draft precise RTI applications for insurance matters.

Even if you are not filing RTI, the RTI option is a useful signal: write to the PSU insurer and mention that you will seek the internal decision-making file under RTI if the dispute is not resolved. This is legitimate and sometimes moves things along.

Private health insurers are not public authorities under the RTI Act. You cannot file RTI with HDFC ERGO, Star Health, Niva Bupa, Care Health, ICICI Lombard, Bajaj Allianz, or any other private insurer. RTI does not apply to them. For private insurer disputes, use the IRDAI Bima Bharosa portal and the Insurance Ombudsman — both of which apply to private and public sector insurers equally.

RTI also will not help with disputes that are purely a matter of policy interpretation (for example, arguing that a sub-limit clause is unfair). The Ombudsman or Consumer Commission is the right forum for such disputes.

For all health insurance complaint routes — private and public — see the detailed guide on Health Insurance Claim Rejected: IRDAI Complaint India and the IRDAI complaint filing guide.

• Accepting the settlement without checking your policy. Many policyholders see the settlement letter, assume the deductions are correct, and move on. Even a quick 30-minute check against your policy schedule can reveal deductions that have no basis in writing.
• Signing the discharge papers acknowledging the shortfall as full and final settlement. Hospitals sometimes present a form for signature that includes language about accepting the insurer's partial payment. Signing this does not legally bar a grievance complaint, but it complicates matters. Read every document before signing at discharge.
• Confusing co-pay with proportionate deduction. Co-pay is a percentage you pre-agreed to bear on every claim. Proportionate deduction is a formula applied when you exceed the room-rent cap. They are different calculations on different parts of your bill, and the insurer should state which applies in the settlement letter. If both are applied simultaneously without clear explanation, that is a ground for complaint. The room-rent / proportionate deduction dispute is covered in our sibling guide: Health Insurance Room Rent Cap and Proportionate Deduction.
• Assuming all non-payable deductions are correct. The IRDAI non-payable list is a list of categories of items that may be excluded — not a blanket licence to deduct everything on a hospital bill. The key question is whether the item was billed separately by the hospital or bundled into the room or procedure package. Bundled items should not be double-deducted.
• Missing the grievance and Ombudsman timelines. You must approach the Ombudsman within one year of the insurer's rejection or final response. If you wait too long, you may lose that remedy. Act within the weekend you receive your settlement letter, not months later.
• Not keeping copies of everything. The Ombudsman and IRDAI processes require documentary proof. If you do not have your original policy schedule, itemized bill, or settlement letter, request copies from the insurer and hospital immediately.
• Conflating sub-limits with waiting periods. A sub-limit caps the amount paid for a condition. A waiting period means the condition is not covered at all for a specified duration. These are different clauses. A dispute about sub-limits (covered in this guide) is different from a dispute about waiting periods (covered in the pre-existing disease and rejection guide).
• Relying on verbal assurances from the agent. If you were told at the time of purchase that there was no co-pay or that all procedures were covered without sub-limits, and this is contradicted by your policy documents, that is a mis-selling complaint — a separate but related dispute. Document what you were told, when, and by whom.

For a broader overview of all deduction types and how to challenge them, see Hospital Bill Deductions in Health Insurance: Complete Guide.

• IRDAI Bima Bharosa — Register a complaint against your insurer (free)
• Insurance Ombudsman — Contacts, process, and award limits (policyholder.gov.in)
• IRDAI Health Department — FAQs, regulations, and master circulars
• Council for Insurance Ombudsmen (cioins.co.in) — Ombudsman office list and complaint forms
• IRDAI Policyholder Portal — What to check when buying health insurance

No. A co-pay clause is only valid if it appears clearly in your policy schedule or certificate of insurance. If you were told about co-pay verbally but it is not in writing, that is a mis-selling grievance and you can dispute the deduction by writing to the insurer's Grievance Redressal Officer and escalating to IRDAI Bima Bharosa.

Only if the sub-limit is explicitly stated in the policy wording or schedule. Generic terms like 'comprehensive cover' do not automatically remove all sub-limits. Read the specific limitations and exclusions schedule attached to your policy. If no ICU sub-limit is listed there, the deduction is disputable.

Under IRDAI's standardisation guidelines, items that hospitals include in the room package or procedure cost and do not bill separately — such as surgical blades, gauze, gloves used during surgery, and IV fluids — should not be deducted. Items on IRDAI's Annexure 1 list must be paid by the insurer. Only items on Annexure 2 can be excluded, and even those are covered if you have a consumables rider.

A co-pay is a fixed percentage of every admissible claim that you must bear, regardless of claim size — for example, you pay 10% and the insurer pays 90% of every settled bill. A deductible is a fixed rupee threshold: the insurer pays only what exceeds that amount. Both must be clearly stated in your policy. Co-pay is most common in senior-citizen plans and top-up policies.

Yes. Accepting a partial settlement cheque does not bar you from disputing wrong deductions. File a written protest with the insurer's Grievance Redressal Officer within the grievance window, and then escalate to IRDAI Bima Bharosa and the Insurance Ombudsman if needed. Keep all original bills and correspondence.

Compare each deducted item line-by-line against the IRDAI non-payable items list (four categories: optional items, room-charge consumables, procedure consumables, and treatment costs). If the item does not appear on that list, or if the hospital bundled it into the room or procedure package without a separate line, the deduction is likely incorrect. Request written reasons citing the exact policy clause from your insurer.

No. Private insurers are not public authorities under the RTI Act 2005, so RTI does not apply to them directly. For private insurers, use the IRDAI Bima Bharosa complaint portal and the Insurance Ombudsman. RTI can be filed with public sector insurers — such as New India Assurance, Oriental Insurance, National Insurance, and United India Insurance — directly, since they are public authorities.