Shikha Nischal v. National Insurance: Section 21(4) of the Mental Healthcare Act 2017 as enforceable parity

The Delhi High Court's judgment of 19 April 2021 in Shikha Nischal v. National Insurance Co. Ltd. — reported as 2021 SCC OnLine Del 2289 — is the first Indian judgment to operationalise Section 21(4) of the Mental Healthcare Act 2017 as enforceable parity between mental and physical illness in the architecture of medical insurance. Justice Pratibha M. Singh, sitting singly, held that the statutory obligation is positive and justiciable, that any policy clause inconsistent with it is void to the extent of inconsistency, and that the IRDAI was under a regulatory duty to ensure that the obligation was reflected in every health-insurance product in force on or after 29 May 2018.

The judgment is significant on three independent footings. The first is doctrinal: it identifies the substantive parity obligation under the MHCA 2017 as a non-derogable component of every health-insurance product. The second is operational: it required National Insurance to reimburse the petitioner's claim and required the IRDAI to circulate the order across the insurance industry. The third is regulatory-architectural: it became the doctrinal foundation for the IRDAI's 18 October 2022 circular and for the consolidated 2024 Master Circular on Health Insurance Business. The judgment functionally re-wrote the mental-illness coverage architecture of the Indian mediclaim market.

The factual matrix

The petitioner — Shikha Nischal — had held a continuous National Mediclaim Policy with the National Insurance Company since 2016. The policy had been renewed each year without break. The last renewal before the dispute was on 29 May 2020, for a sum insured of Rs.3.95 lakh.

In June 2020 the petitioner was hospitalised at Sukoon Hospital in Gurugram. She was diagnosed with Schizoaffective Disorder — a condition recognised under the International Classification of Diseases and falling squarely within the MHCA 2017's working definition of mental illness. The hospitalisation produced a bill of Rs.5,54,636.

The claim was submitted to National Insurance in the ordinary course. National Insurance rejected it on the strength of a standard psychiatric-exclusion clause in the mediclaim policy — a clause of the kind that had been embedded in Indian mediclaim policies for decades and that operated to exclude in-patient psychiatric treatment from cover.

The petitioner approached the Insurance Ombudsman. The Ombudsman upheld the rejection, on the footing that the policy clause was clear and that the parties were bound by their contract. The petitioner moved the Delhi High Court under Article 226, expressly invoking Section 21(4) of the Mental Healthcare Act 2017.

The statutory architecture: Section 21(4) MHCA 2017

The substantive provision around which the case turned is Section 21(4) of the Mental Healthcare Act 2017, which provides that "every insurer shall make provision for medical insurance for treatment of mental illness on the same basis as is available for treatment of physical illness". The provision is, on its face, mandatory; it is directed at every insurer; and it identifies the substantive parity standard — the cover for mental illness is to be on the same basis as the cover for physical illness.

The provision sits within the architecture of the MHCA 2017 — an Act that itself was a substantial doctrinal recalibration of Indian mental-health law, replacing the Mental Health Act 1987 and aligning the Indian framework with the United Nations Convention on the Rights of Persons with Disabilities. The Act's preamble identifies its object as protecting, promoting and fulfilling the rights of persons with mental illness during delivery of mental healthcare and services. Section 21(4) operates as the substantive insurance-parity component of that broader rights architecture.

The Act came into force on 29 May 2018. The architectural consequence is that every insurance product in force on or after 29 May 2018 was, from that date, subject to the Section 21(4) parity discipline.

The Court's reasoning

Pratibha M. Singh J engaged with the substantive parity obligation on three connected propositions.

The obligation is positive and justiciable. The first proposition is that Section 21(4) imposes a positive statutory obligation on insurers — not a hortatory direction or a policy aspiration. The text is mandatory; the obligation is directed at every insurer; and the substantive standard is identified. The provision is accordingly justiciable: a policyholder whose insurer has not provided the parity-based cover that the Act requires can ask a court to enforce the obligation. The argument that the provision is merely directory — an argument that some insurers had been advancing in the post-MHCA period — was rejected.

Inconsistent policy clauses are void to the extent of inconsistency. The second proposition is that any clause in a health-insurance policy that excludes mental-illness cover, or that sub-limits mental-illness cover in a manner inconsistent with the parity standard, is void to the extent of the inconsistency. The doctrinal mechanism is the standard statutory-override architecture: a contract clause cannot stand against a clear statutory obligation; the MHCA parity standard operates as the statutory floor below which the insurance contract cannot be drafted.

The Court was at pains to emphasise that the parity obligation is non-derogable. An insurer cannot, by contract, deliver less than the parity standard. The architecture is not one in which the insurer may opt out of parity by an express exclusion clause; the MHCA parity standard operates as a substantive constraint on the insurer's contracting freedom.

Mental and physical illness cannot be distinguished in scope of cover. The third proposition follows from the first two. Insurers cannot, by policy design, distinguish mental from physical illness in the scope of cover. The substantive cover — limits, sub-limits, room-rent thresholds, day-care list, exclusionary architecture — must operate on a parity footing as between mental and physical illness. The insurer is free, in operational terms, to manage the policy on actuarial grounds; what the insurer is not free to do is to design the policy so as to deliver lower cover for mental illness than for physical illness.

The combined architecture is that Section 21(4) operates as a substantive parity floor that applies across every health-insurance product in force on or after 29 May 2018, that any inconsistent contractual provision is void to the extent of inconsistency, and that the obligation is enforceable by writ where the insurer has not delivered the parity-based cover.

The operative directions

The Court translated the doctrinal architecture into two operative directions.

The first direction was to National Insurance: the insurer was directed to reimburse the admissible component of the petitioner's claim. The reimbursement was to proceed on the substantive parity footing — the same basis on which a physical-illness claim of equivalent magnitude would have been processed. The psychiatric-exclusion clause that National Insurance had relied upon was held to be void to the extent of its inconsistency with Section 21(4).

The second direction was to the IRDAI: the regulator was directed to circulate the Court's order to every insurer carrying on health insurance business in India, and to ensure that the substantive parity obligation was reflected in every health-insurance product. The direction was an exercise of the Court's writ jurisdiction to secure systemic compliance — recognising that the petitioner's individual claim was the visible instance of an industry-wide pattern of psychiatric-exclusion clauses that had survived the MHCA's commencement.

The architecture is significant because it identifies the IRDAI as the operational vehicle through which the MHCA parity standard is to be enforced across the industry. The Court did not attempt to police every health-insurance policy through individual writ proceedings; it identified the regulator as the appropriate institutional channel and required the regulator to act.

The Article 226 jurisdictional move

A subsidiary but significant doctrinal contribution is the Court's handling of the writ-jurisdiction question. National Insurance had argued that the petitioner's remedy lay before the consumer-protection forums or, on the alternative architecture, before the Insurance Ombudsman — and that the Ombudsman's order against the petitioner foreclosed the Article 226 route.

The Court rejected the argument. The substantive engagement of the petition was not the application of the policy clauses to the facts — which would have been the Ombudsman's substantive engagement — but the question whether the policy clauses were enforceable in light of Section 21(4) of the MHCA. That question is not a contract-interpretation question; it is a statutory-validity question, and is squarely within the Article 226 jurisdiction.

The architecture is doctrinally consistent with the broader engagement of the writ jurisdiction with statutory non-derogability. Where a statute imposes a non-derogable obligation and a regulated entity has failed to deliver, the writ jurisdiction is available even where the statute supplies an alternative-remedy architecture for the lower-level disputes. LIC v. Asha Goel — see the Asha Goel digest — had earlier established the availability of Article 226 against a public-sector insurer for enforcement of statutory contractual obligations; Shikha Nischal extends that architecture to the MHCA parity context and to the private-sector insurance market.

The mediclaim parallel: Satwant Kaur and uberrima fides

The Shikha Nischal judgment operates against the background of the modern Indian mediclaim non-disclosure architecture, of which Satwant Kaur Sandhu v. New India Assurance (2009) 8 SCC 316 — see the Satwant Kaur digest — is the principal authority. Satwant Kaur establishes the prudent-insurer test of materiality and the positive duty of disclosure on the insured, recasting the consumer-forum architecture for mediclaim repudiation disputes.

Shikha Nischal engages with a different doctrinal question — the substantive enforceability of policy exclusions in light of statutory parity — but operates within the same broader architecture. The combined reading is that the Indian mediclaim policy is a uberrimae fidei contract subject to statutory constraints: the insured must disclose materially; the insurer must underwrite on the basis of that disclosure; but the insurer cannot, by contract design, deliver less than the substantive cover that the statute requires. The architecture is a two-sided discipline — substantive non-disclosure can vitiate cover on the Satwant Kaur line, and substantive sub-parity in cover design can vitiate exclusion clauses on the Shikha Nischal line.

The IRDAI's 18 October 2022 circular

The most significant subsequent regulatory development is the IRDAI's circular of 18 October 2022 — IRDAI/HLT/MISC/CIR/195/10/2022. The circular was issued on the back of Shikha Nischal and a recurring pattern of non-compliance complaints across the industry. The substantive direction is that every insurance product in force on or after 29 May 2018 "shall be deemed to provide cover for mental illness" — a regulatory deeming that operates to project the Shikha Nischal parity standard across the historic and current product portfolio of every Indian health insurer. The deadline for compliance was set at 31 October 2022.

The architectural consequence is that the IRDAI did not require insurers to renegotiate individual policy contracts; it operationally re-wrote the cover architecture through a regulatory direction that operates as a substantive overlay on the existing policy text. The result is that, from the deadline forward, the insured under any health-insurance product can require mental-illness treatment on a parity footing with physical-illness treatment, regardless of the original drafting of the policy.

The circular has since been consolidated into the 2024 IRDAI Master Circular on Health Insurance Business — IRDAI/HLT/CIR/MISC/77/05/2024, dated 29 May 2024. The Master Circular operates as the consolidated regulatory architecture for the Indian health-insurance market and incorporates the MHCA parity discipline as a non-negotiable component of the substantive cover.

What practitioners take from the judgment today

For policyholder counsel, Shikha Nischal is the authority that supplies the doctrinal route to mental-illness cover in cases where an insurer has rejected a claim on the strength of an exclusion clause. The discipline is to characterise the rejection as inconsistent with the substantive parity obligation under Section 21(4) of the MHCA, to identify the policy clause as void to the extent of inconsistency, and to invoke the writ jurisdiction where the consumer-protection or Ombudsman architecture has failed to deliver. The 2022 IRDAI circular and the 2024 Master Circular are the regulatory authorities that supplement the Shikha Nischal doctrinal architecture.

For insurer counsel, Shikha Nischal is the authority that defines the boundary of the contracting freedom on mental-illness cover. The insurer is free, in operational terms, to manage the substantive risk through underwriting, premium-setting and actuarial design; what the insurer is not free to do is to design the policy so as to deliver lower substantive cover for mental illness. The discipline is to align the product portfolio with the parity standard and to ensure that the IRDAI regulatory architecture is reflected in the substantive cover, the sub-limit architecture and the exclusionary text.

For the IRDAI and for the consumer-protection forums, Shikha Nischal is the authority that defines the substantive parity standard and identifies the operational pathway for its enforcement. The regulatory direction architecture — the deemed-cover overlay introduced by the 2022 circular — is the principal operational vehicle; the writ jurisdiction is the residual enforcement architecture for the cases that the regulatory direction has not adequately addressed.

What the judgment did not decide

Three limits should be flagged.

First, the judgment does not engage with the substantive question of how the parity standard is to be calibrated where the underlying policy architecture has built-in sub-limits and room-rent thresholds. The substantive parity question — whether the sub-limits and thresholds can apply on the same terms to mental-illness treatment — has been the subject of separate regulatory and consumer-protection engagement in the post-Shikha Nischal line, and the operational architecture has had to develop through the IRDAI circulars rather than through doctrinal elaboration in the Court.

Second, the judgment does not address the question of what cover is available under the MHCA parity architecture for out-patient mental healthcare, day-care psychiatric services, and rehabilitative services that fall outside the conventional in-patient hospitalisation architecture of Indian mediclaim. The substantive parity question on these out-patient and rehabilitative arrangements has been the subject of separate consumer-protection engagement in the post-2022 period.

Third, the judgment does not engage with the broader doctrinal question of how the MHCA parity standard interacts with the group-health-insurance architecture, where the employer-policyholder is distinct from the insured employee or dependant. The group-health context is operationally significant — a substantial component of Indian health-insurance cover is supplied through the employer-group route — and the operational architecture has had to develop through the IRDAI's product-filing supervision rather than through doctrinal elaboration.

The doctrinal arc

Shikha Nischal v. National Insurance sits at the intersection of the statutory-rights architecture of the MHCA 2017 and the contractual-insurance architecture of the Indian mediclaim market. The judgment is the doctrinal foundation on which the substantive parity standard rests, and is the authority that has shaped the IRDAI's regulatory architecture for mental-illness cover in the post-2022 period.

For the practitioner advising on any modern Indian mental-illness cover question, Shikha Nischal is the entry point: it identifies the substantive parity obligation, supplies the doctrinal route for its enforcement, and is the doctrinal authority on which the 2022 IRDAI circular and the 2024 Master Circular rest.

Related editorial pieces

• Satwant Kaur Sandhu v. New India Assurance: the prudent-insurer test in mediclaim repudiation
• LIC v. Asha Goel: the burden-and-threshold test under Section 45 of the Insurance Act 1938
• LIC v. Manubhai D. Shah: Article 12, the right of reply, and the LIC's duty of fairness
• Insurance law in May-June 2026: collateral source, mental-health parity, IRDAI cyber-security, and the Sabka Bima reforms