Armed Forces Pension Law · Coronary Artery Disease · Ischaemic Heart Disease · AFT
Coronary Artery Disease & Ischaemic Heart Disease Disability Pension in Armed Forces 2026: NANA, Stress, CABG, Broad-Banding & AFT Remedy
A practical legal guide to disability-pension claims involving CAD, IHD, myocardial infarction, triple-vessel disease, angioplasty and CABG, with emphasis on service stress, hypertension and diabetes, medical-board reasoning, percentage assessment, broad-banding and current High Court authority.
For the general pension framework, see our Armed Forces disability pension guide. For NANA methodology, see NANA Medical Board & AFT Challenge.
1. What is the legal issue in CAD/IHD disability-pension cases?
The issue is not whether the serviceman suffered a heart attack, underwent angioplasty or had CABG. The pension question is whether the cardiac disability is attributable to or aggravated by military service under the rule set applicable to the claim, and what percentage and duration of disablement has been assessed.
Coronary Artery Disease and Ischaemic Heart Disease commonly appear in medical records as CAD, IHD, AWMI, IWMI, STEMI, NSTEMI, Triple Vessel Disease, Double Vessel Disease, post-PCI, post-stent or post-CABG. The underlying legal analysis remains focused on causal connection, aggravation, disability percentage and the adequacy of medical-board reasons.
2. Why military stress matters in IHD cases
Under the 2008 Guide to Medical Officers, Ischaemic Heart Disease is expressly treated as a condition in which prolonged stress and strain can hasten atherosclerosis through neurohormonal and autonomic mechanisms. The guide recognises that emotions, stress and strain can affect lipid response, blood pressure, platelet aggregation, heart rate and arrhythmia.
It also recognises that field and high-altitude service can involve physical hardship, separation from family, financial strain, isolation and compulsory group living. In the right case, these factors may contribute to attributability or aggravation.
- field, high-altitude and counter-insurgency tenures;
- ships, submarines and operational deployment;
- long or irregular duty hours;
- command or technical responsibility;
- repeated high-stress assignments;
- prolonged separation from family;
- documented hypertension developing during service;
- diabetes developing during service;
- major acute stress or exertion shortly before myocardial infarction.
3. Subhash Chander, J&K & Ladakh High Court, 7 February 2026
In Union of India v. Ex Sepoy Subhash Chander, the respondent had first served in the Army and later re-enrolled in the Defence Security Corps. On discharge in 2019, the Release Medical Board assessed Coronary Artery Disease at 30% and obesity at 5%, with composite disability at 30% for life, but treated both conditions as NANA.
The medical-board justification for CAD was essentially that there was no indication of undue service stress and that CAD was likely secondary to a metabolic disorder. The High Court held that this one-line reasoning was vague and cryptic. It emphasised that paragraph 47 of GMO 2008 required consideration of prolonged service stress and strain, environmental factors and the particular features of IHD before denying service connection.
The Court upheld the AFT’s grant of disability element at 30%, rounded to 50% for life.
Read: Union of India v. Ex Sepoy Subhash Chander (7 February 2026).
4. Surendra Nath Singh, Delhi High Court, 23 February 2026
MWO HFL Surendra Nath Singh v. Union of India is a particularly important 2026 case because it involved both Primary Hypertension and Coronary Artery Disease—Triple Vessel Disease.
The petitioner joined the Air Force in 1980 in SHAPE-1. Primary Hypertension developed after about 19 years of service. In April 2016 he developed severe chest pain, investigation revealed three-vessel blockage, and he underwent open-heart surgery. The RMB assessed Primary Hypertension at 30% and CAD-TVD at 30%, with composite disability at 50% for life, but recorded NANA.
The Delhi High Court held that the reasons later advanced by the respondents—smoking, alcohol and overweight—had not actually been recorded by the RMB as the basis for NANA. The Court also rejected peace-station/lifestyle reasoning as insufficient without individualised causative analysis. It ultimately directed release of disability element at the composite 50% for life with arrears.
Read: MWO HFL Surendra Nath Singh v. Union of India (23 February 2026).
5. Ex Hav Ramjas, Delhi High Court, 11 November 2025
In Union of India v. Ex Hav Ramjas, the serviceman had rendered more than 26 years of Army service before CAD was diagnosed. The RMB assessed Coronary Artery Disease—AWMI, non-obstructive CAD—at 30% for life but denied attributability and aggravation because the onset had not occurred in Field/HAA/CI Ops and there was no prior hypertension, diabetes or vasculitis.
The Delhi High Court upheld the AFT’s grant of disability pension and rounding from 30% to 50%. The Court reiterated that a medical board must positively identify the cause relied upon to justify non-attributability and cannot treat absence of field service as an automatic answer.
Read: Union of India v. Ex Hav Ramjas.
6. Other important 2025 CAD/IHD cases
| Case | Condition / assessment | Significance |
|---|---|---|
| Ex JWO Brij Mohan Verma | CAD 40%, rounded to 50% | Over 37 years of Air Force service before diagnosis; AFT relief upheld |
| Ex Sub Yadav Narendra Kumar | CAD-AWMI 30%, rounded to 50% | More than 30 years of service before diagnosis |
| Ex WO Ganesh Chandra Sarkar | CAD 30% + DM-II 20%; composite 44%, rounded to 50% | Useful for cardiac + diabetes composite claims |
| Col Narender Bhushan | IHD post-CABG 50%, rounded to 75% | Important broad-banding authority where entitlement was otherwise accepted |
These cases reinforce that CAD/IHD cases should be analysed individually, not rejected by stock phrases.
7. Hypertension and diabetes as aggravating context
GMO 2008 specifically recognises that IHD occurring in the setting of hypertension, diabetes or vasculitis may warrant aggravation depending on the facts. That means the cardiac claim should not be examined in isolation where the serviceman already has service-connected or service-emergent hypertension or diabetes.
For hypertension, see our Primary Hypertension disability-pension guide. For diabetes, see Type-II Diabetes disability-pension guide.
8. Does peace-station onset defeat a CAD/IHD claim?
No, not automatically. Courts have repeatedly stressed that the mere fact that a condition arose in a peace station does not by itself establish lack of causal connection. Regulation 423 of the Regulations for Medical Services requires the decision-maker to look at whether the disability bears a causal connection with service conditions rather than simply asking whether the person was in a field area.
That said, field/HAA/CI Ops evidence can materially strengthen an older-rule IHD case because the medical guide itself recognises those environments as relevant to attributability and aggravation.
9. When personal risk factors matter: the Birbal Singh counter-example
A balanced CAD article must recognise that not every heart-disease claim succeeds. In Cdr Birbal Singh, the record contained substantial personal risk factors, including longstanding obesity, dyslipidaemia, chronic smoking and alcohol consumption. The AFT rejected disability-pension entitlement, and the Supreme Court declined to interfere in 2022.
This is important because it shows the difference between a cryptic “lifestyle disease” label and a genuinely documented individual risk profile. If the medical record identifies concrete personal risk factors and explains why those factors, rather than service conditions, caused the disease, a NANA finding is far more defensible.
10. Angioplasty, stent and CABG do not themselves decide pension entitlement
PCI, angioplasty, stent placement and CABG are treatment events. They can indicate severity, but they do not automatically establish service connection. The pension analysis still turns on:
- when the disease arose;
- what the service conditions were;
- whether hypertension or diabetes existed;
- what risk factors were documented;
- what percentage and duration the RMB assessed;
- whether the board gave legally sustainable reasons for NANA.
11. Percentage assessment in cardiac cases
Recent cases show assessments of 30%, 40% and 50% for life, depending on the underlying cardiac impairment. Some cases involve a composite percentage because CAD is accompanied by hypertension, diabetes or another disability.
Broad-banding is a separate calculation issue. It does not create entitlement. Once the disability element is otherwise payable, the applicable broad-banding law may raise:
| Assessed disability | Common rounded level under applicable framework |
|---|---|
| 20%–50% | 50% |
| Above 50% up to 75% | 75% |
| Above 75% up to 100% | 100% |
For the latest broad-banding position and arrears, see our Sgt Girish Kumar broad-banding guide.
12. Composite disability: CAD with hypertension or diabetes
Composite disability can be critical where CAD co-exists with Primary Hypertension, Type-II Diabetes Mellitus or another accepted disability. The composite figure is not simply an arithmetic total; it must be determined under the applicable medical methodology.
Surendra Nath Singh is a useful example: hypertension 30% plus CAD-TVD 30% yielded a composite 50% for life. Ganesh Chandra Sarkar involved CAD 30% plus diabetes 20%, with composite assessment at 44%, rounded to 50%.
13. ER 2008 versus ER 2023
| Issue | Older-rule claims | Post-21 September 2023 |
|---|---|---|
| Primary sources | ER 2008 / GMO 2008 and applicable regulations | ER 2023 / GMO 2023 |
| IHD reasoning | Para 47 stress, field/HAA, hypertension/diabetes and risk-factor analysis | Must be pleaded from the 2023 criteria and current medical guide |
| Use of older judgments | Directly relevant where same framework applies | Potentially persuasive on reasoned decision-making, but not a substitute for the newer rules |
The Ministry of Defence has stated that death/disability reported or recorded after 21 September 2023 is governed by the 2023 entitlement framework. The date of the claim and medical-board process must therefore be identified before citing older cases.
Official DESW: Entitlement Rules 2023 & Guide to Medical Officers 2023.
14. What makes a CAD/IHD NANA opinion vulnerable?
- No cardiac disease was recorded at entry.
- The person rendered long fit service before onset.
- The RMB relies only on peace-station onset.
- The RMB says “metabolic” or “lifestyle” without identifying actual individual factors.
- Field/HAA/CI Ops history is not discussed.
- Hypertension or diabetes that developed during service is ignored.
- The board does not address prolonged stress and strain under the applicable medical guide.
- Later litigation introduces smoking, alcohol, obesity or age even though the RMB did not rely on them.
- The appellate authority mechanically repeats NANA.
- Percentage and duration are accepted, but service connection is rejected without a causal analysis.
15. What makes a NANA finding stronger?
A medical-board conclusion is more defensible where the record documents significant non-service risk factors and the board connects them to the cardiac condition through a reasoned medical analysis. This may include longstanding obesity, dyslipidaemia, heavy smoking, substantial alcohol consumption, strong hereditary risk or other biological factors, particularly where no service-related aggravating circumstance is present.
The central legal issue is therefore not whether “lifestyle factors” can matter—they can—but whether they were actually identified, supported by the record and used in a reasoned causation analysis.
16. Practical AFT grounds in a CAD/IHD case
- The applicant was fit at entry and no cardiac disease was recorded.
- CAD/IHD arose after prolonged military service.
- The RMB did not identify a specific alternative cause.
- The board failed to consider prolonged stress and strain under the applicable GMO.
- Field, HAA, CI Ops, ship/submarine or operational duties were ignored.
- Service-emergent hypertension or diabetes was not considered as aggravating context.
- Peace-station onset was treated as conclusive.
- Personal risk factors were introduced later but were not recorded as the RMB’s basis for NANA.
- Composite disability was incorrectly calculated.
- Broad-banding or consequential PPO correction was not granted despite established entitlement.
17. Documents checklist
| Document | Why it matters |
|---|---|
| Entry medical examination | Baseline cardiac health |
| Service medical record | Hypertension, diabetes, lipids and cardiac chronology |
| ECG / echo / angiography / cardiac workup | Severity and diagnosis |
| PCI / stent / CABG records | Treatment history and functional impairment |
| Posting profile | Field, HAA, CI Ops and operational exposure |
| RMB / IMB | Percentage, duration and NANA reasoning |
| Risk-factor history | Smoking, alcohol, obesity, dyslipidaemia, family history |
| First / Second Appeal orders | Shows departmental reasoning |
| PPO / Corrigendum PPO | Implementation and arrears |
18. Frequently asked questions
Can CAD be treated as aggravated by military service?
Yes, depending on the governing rules and facts. Older GMO provisions expressly recognise prolonged stress and strain, certain field/high-altitude conditions, and IHD occurring with hypertension or diabetes as potentially relevant to aggravation.
Does a heart attack in a peace station disqualify the claim?
No. Peace-station onset is not automatically fatal. The real question is causal connection with service conditions.
Does CABG automatically mean 50% disability?
No. The percentage depends on the medical assessment and functional impairment. CABG is clinically significant but does not by itself set the pension percentage.
Can 30% CAD be rounded to 50%?
Where disability element is otherwise payable and broad-banding applies, recent cases have upheld rounding of 30% to 50%.
Can 50% IHD post-CABG be rounded to 75%?
Yes in covered cases; Col Narender Bhushan is an example where the AFT’s broad-banding from 50% to 75% was upheld.
What if the person also had hypertension or diabetes?
Those conditions should be analysed separately and in combination. They may affect both causation/aggravation and composite disability.
Can obesity, smoking or alcohol defeat the claim?
They can materially affect the result if they are genuinely documented and medically reasoned as causative factors. A bare label is different from an evidence-based individual risk profile.
19. Key takeaway
CAD and IHD disability-pension disputes are among the clearest examples of why medical-board reasoning matters. The same diagnosis can produce different legal outcomes depending on service history, stress exposure, hypertension/diabetes, personal risk factors and the quality of the RMB’s causal analysis.
The strongest claim is therefore not one that merely says “heart disease arose in service”. It is one that reconstructs the medical and service chronology, identifies the applicable entitlement-rule framework and tests every stated NANA reason against the actual record.
Case-information checklist
A meaningful CAD/IHD pension review ordinarily requires the entry medical record, service medical history, cardiology investigations, angiography/PCI/CABG record, RMB/IMB, posting profile, hypertension/diabetes history, documented personal risk factors, appeal orders and PPO.
Submit case information / documents
This form is provided for organised transmission of case information. It is not solicitation, an assurance of engagement or an assurance of outcome.