Obstructive Sleep Apnoea Disability Pension in Armed Forces 2026: ER 2023 NANA Rule, CPAP, Obesity, Broad-Banding & AFT Remedy

1. What is Obstructive Sleep Apnoea?

OSA is a sleep-related breathing disorder in which the upper airway repeatedly narrows or closes during sleep, causing apnoea or hypopnoea, oxygen desaturation and fragmented sleep. Common features include loud snoring, witnessed pauses in breathing, morning headaches, daytime sleepiness, reduced concentration and non-restorative sleep. Diagnosis is commonly supported by overnight polysomnography or an accepted sleep study, with severity often expressed through the Apnoea-Hypopnoea Index (AHI).

2. The decisive issue: which rules apply?

The first question is not simply whether the individual served for many years. It is which entitlement rules and medical guide governed the disability when it was reported or recorded.

The official Ministry of Defence page publishing the Entitlement Rules 2023 and Guide to Medical Officers 2023 should therefore be checked before framing a current claim.

3. Lt Gen Sandeep Singh (Retd): obesity cannot be invented after the Medical Board

In Lt Gen Sandeep Singh (Retd) v Union of India & Ors, OA 47/2017, decided by the Armed Forces Tribunal, Principal Bench on 18 April 2017, the officer had long service with extensive field, high-altitude and counter-insurgency tenures. His disabilities included CAD, Type-II Diabetes Mellitus and Severe Obstructive Sleep Apnoea.

The respondents sought to explain OSA through obesity and anatomical airway factors. The Tribunal noted that the relevant medical-board records had not in fact categorised the officer as obese and that the later administrative explanation was not reflected in the medical-board proceedings. It held that an administrative authority, without another medical opinion, could not substitute its own medical causation theory. The applicant was awarded disability element on the composite assessment, broad-banded from 60% to 75%.

Read the AFT decision: Lt Gen Sandeep Singh (Retd), OA 47/2017.

4. Rohitash Kumar Sharma: the major OSA pension litigation

Rohitash Kumar Sharma v Union of India, OA 320/2019, is one of the best-known Armed Forces OSA disability-pension cases. The applicant joined the Indian Air Force in November 1995 and was discharged in November 2015. His Release Medical Board assessed Severe Obstructive Sleep Apnoea at 15–19% for life but treated it as NANA.

The AFT examined the reasoning that OSA was caused by obesity and anatomical variations. It found the recorded reasoning insufficient and granted disability element with rounding. A summary of the AFT ruling is available at SCC Times.

The Union challenged the AFT order in Civil Appeal Nos. 1577–1578 of 2022. On 13 May 2026, the Supreme Court recorded that the Union had already implemented the AFT order and disposed of the appeals while leaving the question of law open. Read the Supreme Court order dated 13 May 2026.

5. Can obesity defeat an OSA claim?

Obesity is a recognised clinical risk factor for OSA, but the legal treatment depends on the governing rules and the medical record. In a legacy claim, the fact that a person was overweight at some point does not by itself prove that obesity caused the OSA. A proper causation analysis should identify recorded BMI/weight history, timing of weight gain, specialist opinion, airway anatomy, onset of symptoms, comorbidities and whether the RMB itself adopted obesity as the cause.

This issue should also be read with our detailed guide on Obesity & Metabolic Disorder in Armed Forces Disability Pension.

6. What changes under GMO 2023?

GMO 2023 introduced a dedicated paragraph for OSA. It describes repeated upper-airway closure during sleep and identifies multiple interacting mechanisms, including airway anatomy, tissue characteristics, neuromuscular function, sleep-related reduction in dilator-muscle activity, protective reflexes and ventilatory/arousal responses. It then states that these factors cannot be considered attributable to or aggravated by military service and consequently treats OSA as NANA.

This creates a substantially higher hurdle for a post-2023 OSA entitlement claim. The realistic enquiry may shift to whether the disability was actually reported or recorded before the 2023 regime; whether the diagnosis is truly OSA or another respiratory/neurological/ENT disability; whether a separate service-connected primary disability is independently assessable; whether the board applied the correct rule version; whether the dispute is about entitlement or only percentage assessment; and whether a composite-disability calculation has been done correctly.

7. CPAP dependence: what does it prove?

CPAP or Auto-CPAP dependence is important evidence of diagnosis, severity and treatment requirements. It can demonstrate that the condition is persistent and functionally significant. However, CPAP use by itself does not prove attribution or aggravation by military service.

• baseline and titration polysomnography;
• AHI and oxygen-desaturation indices;
• CPAP pressure prescription and compliance reports;
• pulmonology, ENT or sleep-medicine opinions;
• weight/BMI trajectory;
• medical-category proceedings;
• limitations on night duties, driving, flying, weapon handling or operational deployment, where recorded.

8. OSA with hypertension, diabetes, CAD or hypothyroidism

OSA frequently appears alongside cardiometabolic conditions. This does not mean all conditions share the same pension entitlement. Each disability must be examined under its own causation and assessment rules.

• Primary Hypertension disability pension
• Type-II Diabetes disability pension
• CAD / IHD disability pension
• Primary Hypothyroidism disability pension

9. Composite disability and broad-banding

Where more than one impairment is assessed, medical boards may calculate a composite percentage under the applicable assessment rules. But a composite percentage does not automatically convert every component disability into a service-connected disability. Entitlement and assessment remain conceptually distinct.

Broad-banding is also a separate question. A person must first establish entitlement to the relevant disability element or impairment benefit. The rounding rules then determine whether an accepted percentage falls into an eligible 50%, 75% or 100% slab. See our Broad-Banding & Arrears guide.

10. Reassessment and worsening

OSA may worsen with age, weight change, anatomical progression or associated disease. But worsening of severity does not necessarily reopen service entitlement. A reassessment proceeding usually concerns the degree of impairment, subject to the governing rules and type of medical board. See our Disability Pension Reassessment guide.

11. Documents to examine before filing an OSA pension case

12. Common legal defects in legacy OSA NANA decisions

• A bare statement that OSA is constitutional or due to obesity without supporting findings.
• Obesity relied upon although the contemporaneous board did not record obesity.
• An appellate or administrative authority introducing a new medical cause not found by the specialist/RMB.
• Failure to identify which Entitlement Rules/GMO governed the claim.
• Failure to distinguish entitlement from percentage assessment or broad-banding.
• Ignoring contradictory medical-category records.

13. When an AFT challenge may be weak

A claim may be materially weaker where the post-2023 framework squarely applies and the case rests only on the proposition that long service or stressful duties must have caused OSA. It may also be weak where specialist evidence clearly documents non-service anatomical or metabolic causes and there is no procedural or evidentiary defect in the medical-board opinion.

14. Practical AFT grounds in an appropriate OSA case

1. Wrong legal regime: ER/GMO 2023 applied retrospectively to a legacy claim, or an older rule used for a post-2023 claim.
2. Unreasoned medical opinion: the NANA conclusion lacks an individualised specialist basis.
3. Post-hoc causation: obesity or another cause appears only in the rejection order.
4. Record contradiction: earlier boards describe the individual as non-obese or do not support the alleged risk factor.
5. Assessment error: the percentage conflicts with applicable assessment provisions or objective testing.
6. Composite-disability error: accepted and NANA disabilities are combined or excluded incorrectly.
7. Broad-banding error: entitlement is accepted but applicable rounding is denied.

15. Frequently Asked Questions

Is OSA automatically eligible for disability pension?

No. The applicable rule date is critical. GMO 2023 contains a specific OSA paragraph treating OSA as NANA. Older cases require analysis under the earlier framework and the actual medical record.

Does 20 years of service automatically prove aggravation?

No. Long fit service can be relevant in legacy litigation but is not conclusive and cannot by itself displace an express current rule.

Does CPAP use establish entitlement?

No. CPAP supports diagnosis, severity and treatment requirements. Service nexus remains separate.

Can obesity be used to deny OSA?

It may be medically relevant. In legacy cases, however, the record should show that obesity was actually documented and medically relied upon rather than introduced later.

What happened in Rohitash Kumar Sharma’s Supreme Court case?

The Union’s appeals were disposed of on 13 May 2026 after the Court recorded implementation of the AFT order. The broader question of law was left open.

Can OSA be combined with hypertension, diabetes or CAD?

It may form part of a composite medical assessment, but each disability’s entitlement must be analysed separately.

16. Related resources

• Disability Pension for Armed Forces: Main Guide
• Attributable, Aggravated or NANA: Medical Board & AFT Challenge
• Obesity & Metabolic Disorder in Disability Pension
• Disability Pension Reassessment

Legal note: This article is a general legal-research resource. Military disability-pension entitlement is highly date-sensitive and depends on the governing Entitlement Rules, Guide to Medical Officers, medical-board proceedings and individual service record. Older judgments should not be applied mechanically to disabilities governed by ER 2023/GMO 2023.