How to file a health-insurance claim — cashless and reimbursement routes
A health-insurance claim in India runs through one of two procedural channels. The cashless channel applies where the insured is admitted to a hospital in the insurer's network — the hospital coordinates pre-authorisation with the insurer's Third-Party Administrator (TPA) and bills the insurer directly. The reimbursement channel applies where the insured is admitted to a non-network hospital, or where cashless pre-authorisation has failed, or where the procedure is planned out-of-network — the insured pays out of pocket and reclaims the bill from the insurer after discharge. Both channels sit inside the IRDAI (Health Insurance) Regulations, 2016 and Regulation 15 of the IRDAI (Protection of Policyholders' Interests) Regulations, 2017, which fixes a one-hour outer limit for cashless authorisation from the time of receipt of the hospital's request and a thirty-day outer limit for reimbursement settlement from the date of receipt of the last necessary document. The materiality line in Reliance Life Insurance Co Ltd v Rekhaben Nareshbhai Rathod, (2019) 6 SCC 175 and the arbitrary-non-renewal line in Biman Krishna Bose v United India Insurance Co Ltd, (2001) 6 SCC 477 and United India Insurance Co Ltd v Manubhai Dharamsinhbhai Gajera, (2008) 10 SCC 404 set the doctrinal frame within which the insurer must accept or reject. This guide walks both channels end to end.
Health insurance in India is a contract of indemnity — unlike life insurance, which is contingency. The insurer's promise is to make good the actual hospitalisation expense subject to the sum insured, the policy's exclusions, and the contract's room-rent, sub-limit, co-pay and deductible architecture. The Supreme Court in LIC v Consumer Education & Research Centre, (1995) 5 SCC 482 located the regulatory frame within constitutional fairness — an insurer (especially a state-instrumentality insurer) cannot impose unconstitutional or arbitrary conditions on what is, at root, a social-security instrument. The IRDAI's 2016 health-insurance regulations and the 2017 protection-of-policyholders regulations operationalise that constitutional steer through hard timelines, standardised exclusions, and standardised claim forms. The procedural framework matters because most rejected claims are rejected on procedure — failed pre-authorisation, deficient documentation, missed intimation — not on substance.
The statutory and regulatory frame
Three layers govern a health-insurance claim. The Insurance Act, 1938 — Section 2(6C) (definition of health-insurance business), Section 39 (nomination, applicable to health policies that carry a death-benefit or terminal-illness component), Section 45 (the three-year absolute bar on repudiation as substituted by the Insurance Laws (Amendment) Act, 2015, which applies to health policies as much as to life policies), Section 64VB (no risk assumption till premium is received) and Section 64UM (surveyor's report; in practice mainly relevant to high-value health claims above the prescribed threshold). The IRDA Act, 1999 sets up the regulator. And the regulations made under those Acts — the IRDAI (Health Insurance) Regulations, 2016, which fix product structure and standardised exclusions; the IRDAI (Health Insurance Portability) Regulations, 2011; and the IRDAI (Protection of Policyholders' Interests) Regulations, 2017, whose Regulation 15 fixes the cashless and reimbursement claim-settlement clocks.
The IRDAI Guidelines on Standardisation in Health Insurance, 2020 (modified in 2024) standardised the proposal form, the claim form, the discharge summary, the list of excluded items, the cooling-off and waiting-period architecture, and the maximum pre-existing-disease (PED) waiting period (now capped at thirty-six months for most retail products). The standardised claim form has two parts — Part A is filled by the patient or claimant and carries the policy details, the nature of the claim, and the bank details for NEFT credit; Part B is filled by the hospital and carries the diagnosis, the line of treatment, the ICD-10 codes, the date and time of admission and discharge, and the itemised bill.
Regulation 15 — the cashless one-hour rule and the reimbursement thirty-day clock
Regulation 15 of the IRDAI (Protection of Policyholders' Interests) Regulations, 2017 is the procedural spine. It fixes — first, that the insurer or its TPA shall communicate the cashless authorisation decision to the network hospital within one hour of receipt of the request, and the discharge authorisation likewise within one hour of receipt of the final bill and discharge summary. Second, that where reimbursement is sought, the insurer shall settle (pay, partially pay, or repudiate in writing with reasons) within thirty days of the date of receipt of the last necessary document. Third, that any delay beyond the thirty-day reimbursement window or the one-hour cashless window attracts interest at the bank rate plus two per cent on the claim amount payable to the claimant. Fourth, that the insurer's repudiation of any claim shall be communicated to the claimant in writing, with the grounds and the policy clause being invoked, and with notice of the claimant's right to approach the Insurance Ombudsman under the Insurance Ombudsman Rules, 2017.
Regulation 15 has been enforced by consumer commissions and ombudsmen. The pandemic-era directions of the regulator — issued under Section 14 of the IRDA Act, 1999 — required insurers to honour the one-hour cashless rule strictly for COVID admissions and made delayed authorisations a "deficiency in service" under the Consumer Protection Act, 2019. The 2020-2022 directions ride alongside Regulation 15 and remain part of the operative framework for any claim coded as an infectious-disease admission.
The cashless channel — the procedural walk-through
The cashless channel begins with the insured's e-card or policy number presented at admission to a hospital in the insurer's network. The hospital's TPA desk fills the cashless pre-authorisation form — patient demographics, policy number, diagnosis, line of treatment, ICD-10 codes, estimated cost, and supporting medical documentation (admission notes, investigation reports, prior consultations) — and faxes or uploads it to the insurer or its TPA. The TPA's medical team reviews the pre-authorisation against the policy's coverage — sum insured available, waiting periods lapsed, room-rent and sub-limit caps, exclusions inapplicable. Under Regulation 15 the decision is to be communicated within one hour. A "pre-authorisation approved" sets a sub-limit amount that the hospital may bill directly to the insurer; an "enhanced authorisation" can be sought later if the treatment costs run higher; a "pre-authorisation denied" routes the claim to the reimbursement channel.
At discharge the hospital sends the final bill, the discharge summary, and the itemised investigation/medication breakdown to the TPA. The TPA matches the final bill against the cashless authorisation, applies the policy's co-pay and deductible, deducts non-payable items (food charges, attendant charges, registration, items in the standard exclusions list), and authorises the discharge payment. The insured pays only the non-payable items, the co-pay, the deductible, and any excess over the sum insured. The Supreme Court has not directly ruled on the one-hour rule, but high-court and consumer-commission decisions — in particular the line of National Commission orders on wrongful cashless denials and the pandemic-era directions — have read it as a binding minimum standard.
The reimbursement channel — the procedural walk-through
The reimbursement channel applies where the hospital is not in the network, where cashless pre-authorisation was denied, where the admission was emergency and the network status could not be checked, or where the insured chose to pay out of pocket. The procedural steps are — first, intimate the insurer or TPA within the time prescribed by the policy bond (typically twenty-four to forty-eight hours of admission for planned, and within seventy-two hours for emergency); second, preserve all originals — pre-admission consultation notes, admission notes, daily progress notes, investigation reports, discharge summary, itemised final bill, pharmacy bills, implant invoices where relevant; third, after discharge, submit the standard claim form (Part A by the insured, Part B by the hospital), the originals, the policy bond, the insured's KYC (Aadhaar and PAN), the cancelled cheque for NEFT, and the doctor's prescription supporting each medication and diagnostic test.
Regulation 15's thirty-day clock runs from the date of receipt of the last necessary document. The insurer may issue a "query letter" calling for additional documents — frequency, justification, prior history — within the first fifteen days; the clock is suspended till the queries are answered and re-runs from the date of receipt of the answered queries. A failure to answer the queries inside the insurer's prescribed window (typically thirty days) can be treated as abandonment of the claim. The Supreme Court in Galada Continental Pvt Ltd v Union of India, (2016) 12 SCC 152 has held that delayed intimation, in itself, is not fatal to a contractual claim unless the insurer can show prejudice — a query-trail does not extinguish the substantive entitlement.
The materiality test — Rekhaben Rathod (2019) and the pre-existing-disease question
The single most contested ground of health-claim repudiation is non-disclosure of a pre-existing disease (PED) in the proposal form. The Supreme Court in Reliance Life Insurance Co Ltd v Rekhaben Nareshbhai Rathod, (2019) 6 SCC 175 held that an insurance contract is a contract uberrimae fidei and that the proposer's duty to disclose extends to every fact that would influence the judgement of a prudent insurer in fixing the premium or deciding whether to take the risk. The materiality test is objective — the question is not what the insured thought was material, but what a prudent insurer would have considered material. Rekhaben Rathod built on the earlier line in Satwant Kaur Sandhu v New India Assurance Co Ltd, (2009) 8 SCC 316, which held suppression of an existing chronic-renal-failure condition material. Within the three-year Section 45 window, the insurer may repudiate by establishing materiality, fraudulence, and knowledge at the time of the proposal; beyond three years, Section 45 (as substituted in 2015) closes the door absolutely.
The 2016 IRDAI Health Insurance Regulations, read with the 2020 standardisation guidelines, cap the PED waiting period at thirty-six to forty-eight months for most retail health products — once that waiting period has lapsed, a disclosed PED becomes payable. The Delhi High Court in Hari Om Agarwal v Oriental Insurance Co Ltd, AIR 2008 Del 29 read the PED exclusion narrowly — diabetes and hypertension declared at proposal cannot be stretched to exclude an unforeseen cardiac event arising later, and an insurer who refuses on that footing acts arbitrarily. The doctrinal balance is — materiality is judged at proposal; coverage after the waiting period is judged at admission; and exclusions are construed against the insurer where two readings are possible.
Common rejection grounds — what insurers actually invoke
Health-insurance repudiations cluster around eight grounds. First, non-disclosure of a pre-existing disease in the proposal form, anchored on Rekhaben Rathod and Satwant Kaur Sandhu; the insurer's burden is the three-part Section 45 test until the three-year line. Second, the waiting period has not lapsed — typical first-year waiting periods exclude cataract, hernia, hysterectomy and stones; PED waiting periods are longer; specific-disease waiting periods (knee replacement, joint replacement) can run to four years. Third, the condition is in the policy's standard exclusions list — congenital external defects, cosmetic surgery, fertility treatment, weight-management procedures, dental treatment unless arising from accident; the 2020 IRDAI standardisation rationalised the list and made it largely uniform across insurers. Fourth, reasonable-and-customary-charges deduction — the insurer pays only that part of the bill that is reasonable for the location and the class of room booked; the room-rent sub-limit then proportions the entire bill. Fifth, non-allopathic treatment in a policy that does not cover AYUSH systems. Sixth, drug trial or experimental treatment expenses, almost universally excluded. Seventh, hospital not registered or not meeting the policy's hospital-definition criteria (typically minimum bed count and qualified staff). Eighth, failure of cashless pre-authorisation routed to the reimbursement channel and then disputed on documentary deficiency.
The cross-cutting protection is the renewal rule. The Supreme Court in Biman Krishna Bose v United India Insurance Co Ltd, (2001) 6 SCC 477 held that an insurer (especially a state-instrumentality insurer) cannot refuse renewal of a mediclaim policy on extraneous or irrelevant grounds — the fact that the insured has approached a consumer forum or court is not a bad record. The Court extended the rule in United India Insurance Co Ltd v Manubhai Dharamsinhbhai Gajera, (2008) 10 SCC 404, requiring the regulator and the Government to lay down guidelines preventing arbitrary refusal of renewal, while clarifying that an insured is not entitled to automatic renewal on the original premium. The two cases govern the senior-citizen renewal disputes that drive much of the high-volume health-insurance litigation today.
The four-route repudiation ladder
Where the insurer rejects the claim — wholly or in part — the insured has four cumulative routes. First, the insurer's internal grievance-redressal mechanism — every IRDAI-licensed insurer is required to maintain a designated grievance officer and to issue a written response within fifteen days under the IRDAI's grievance-redressal guidelines. Second, the Insurance Ombudsman under the Insurance Ombudsman Rules, 2017 — jurisdiction up to fifty lakh rupees in claim value, complaint filed within one year of the insurer's final reply, the ombudsman's award binding on the insurer up to thirty lakh rupees. Third, a consumer complaint under the Consumer Protection Act, 2019 — Section 34 (district commission, up to one crore), Section 47 (state commission, one to ten crore), Section 58 (national commission, above ten crore); a health-insurer is a service provider under Section 2(7) and repudiation of a valid claim is a deficiency in service under Section 2(11). Fourth, a writ under Article 226 of the Constitution against a state-instrumentality insurer — narrow but available where arbitrariness is writ large, and the route used in Biman Krishna Bose and the line that follows.
The choice between routes is dictated by claim value, urgency, and the nature of the dispute. The ombudsman is faster (typically three to six months) and free, but capped at the lower commission's range; the consumer commission is slower but carries no internal cap on award; the writ is faster than the consumer commission for state-instrumentality insurers but limited in factual inquiry. The repudiation ladder is the subject of the companion article on challenging an insurance claim rejection (article 137) and the companion article on mediclaim repudiation through the IRDAI ombudsman (article 143).
Portability, renewal, and the senior-citizen carve-out
The IRDAI (Health Insurance Portability) Regulations, 2011 give the insured the right to migrate from one health-insurer to another or from one product to another without losing the credit for waiting periods already served. Portability requires intimation to the existing insurer at least forty-five days before renewal; the existing insurer is required to share the underwriting history with the new insurer through the IRDAI's common portability portal; the new insurer is required to underwrite the proposal within fifteen days. A portability application cannot be rejected for delay in the existing insurer's response — the regulatory burden is on the existing insurer.
For senior-citizen policies, the case-law line — Biman Krishna Bose, Manubhai Gajera, and the high-court orders that follow — has constructed a fairness floor on top of the contractual renewal regime. The insurer cannot non-renew arbitrarily; the insurer cannot exclude a disease that arose during the original policy and was paid for; the insurer cannot impose an arbitrary premium loading without disclosed actuarial basis; and the insured cannot demand automatic renewal on the original premium where the IRDAI-approved product itself permits revision. The balance — fair-treatment renewal but not automatic renewal — is the practical floor that consumer commissions enforce.
What the claimant should not assume
The four most common claimant-side errors are — first, treating the cashless denial as the end of the claim; the reimbursement route remains open. Second, neglecting the standard exclusions and the room-rent proportioning — booking a room category higher than the policy's sub-limit triggers proportional deduction across the entire bill, not just the room-rent component. Third, missing the intimation window in the policy bond; while Galada Continental protects against trivial delays, an unexplained multi-week delay invites the insurer to allege prejudice. Fourth, accepting the first repudiation as final; the ombudsman and consumer-commission routes are statutory and the success rate on documented PED disputes within the three-year window is genuinely contested by the courts. The procedural discipline matters because the substantive entitlement is, in most retail health products, broader than the rejection letter suggests — the rejection cites a clause; the clause has to survive the materiality test, the construction-against-insurer canon (where two readings are possible), and the IRDAI's standardisation overlay. The claimant who keeps the originals, intimates promptly, answers queries within the window, and ladders up through the four routes recovers the bulk of legitimately contested claims.