Fewer than half of the deaths registered in Tamil Nadu carry a doctor’s certificate of cause. Among those that do, heart and blood vessel disease accounts for more than half, a far larger share than in India as a whole.
The numbers
Of 6,96,402 deaths registered in Tamil Nadu in 2022, 2,99,384, or 43.0%, were medically certified with a cause, according to the Registrar General of India’s Report on Medical Certification of Cause of Death 2022, published in June 2025. That is nearly twice the national level of 22.3%, and Tamil Nadu ranked second among major states on this measure every year from 2015 to 2022.
Among the certified deaths, 52.9% were attributed to diseases of the circulatory system: heart attacks, strokes, heart failure and related conditions. Nationally the share was 40.8%. The report lists Tamil Nadu among five states where circulatory disease exceeds half of all certified deaths.
Both numbers need care. Certification covers mostly deaths in hospitals, so the cause mix reflects who dies in hospital. Still, it is the only official record of cause of death that comes from a doctor rather than a survey or estimate.
How a cause of death gets recorded
Under the Registration of Births and Deaths Act, deaths are registered through the Civil Registration System. When a death happens in a hospital, the attending doctor fills a medical certificate of cause of death (MCCD), and the cause is coded to the WHO’s International Classification of Diseases. Tamil Nadu has used common CRS software statewide since 2018, and a government order of 21 December 2022, G.O.(D) No. 1358, directed integration with e-Mortality software to capture causes of death, the CRS report for 2022 notes.
Coverage depends on hospitals sending data. Tamil Nadu has 8,339 medical institutions with in-patient beds, all covered by the scheme, but only 2,577, or 30.9%, reported MCCD data in 2022. On timeliness, the state registered more than 90% of births and 80% to 90% of deaths within the 21-day legal limit that year.
Share of Tamil Nadu’s deceased who received any medical attention whose death was certified in 2022; the national figure was 46.5% (MCCD 2022, Statement 2.11).
A decade of certification
| Year | Registered deaths | Medically certified | Share certified |
|---|---|---|---|
| 2013 | – | – | 31.2% |
| 2015 | – | – | 40.5% |
| 2017 | – | – | 43.3% |
| 2018 | – | – | 45.0% |
| 2019 | – | – | 44.0% |
| 2020 | 6,87,212 | 2,95,539 | 43.0% |
| 2021 | 8,75,012 | 4,45,577 | 50.9% |
| 2022 | 6,96,402 | 2,99,384 | 43.0% |
Source: Office of the Registrar General, India, MCCD Report 2022, Statements 2.4 and 2.10. Counts are given only for 2020 to 2022 in the statements used.
The share rose steadily from 31.2% in 2013 to 45.0% in 2018 and then stalled. The jump in 2021, to 50.9%, came in the year of the pandemic’s second wave, when registered deaths rose about 27% over 2020. In 2022 both registered deaths and certification returned to 2020 levels. The report lists Tamil Nadu among 24 states and union territories where the number of certified deaths fell between 2021 and 2022.
Tamil Nadu in the national count
Tamil Nadu’s 2,99,384 certified deaths were about 15.5% of India’s 19,32,540 certified deaths in 2022, far more than its share of the population, simply because other states certify so few. Nationally, ill-defined causes accounted for 2,30,375 certificates, and injuries, poisoning and other external causes for 70,438. Deaths at 70 and above made up 26.9% of certified deaths in India; the report does not give the age split for Tamil Nadu.
Certification is slightly higher for men (44.0%) than women (41.6%). Put the other way, about 3.97 lakh deaths in Tamil Nadu in 2022 had no medical certificate of cause, 6,96,402 minus 2,99,384.
What Tamil Nadu dies of, and how it differs
| Cause group (ICD-10) | Tamil Nadu, % of certified | India, % of certified |
|---|---|---|
| Circulatory system | 52.9 | 40.8 |
| Respiratory system | 8.6 | 9.7 |
| Infectious and parasitic | 6.8 | 7.4 |
| Neoplasms (cancers) | 3.2 | 4.3 |
| Genitourinary system | 3.1 | 4.2 |
| Endocrine, nutritional, metabolic | 3.0 | 4.1 |
| Digestive system | 2.5 | 3.7 |
| Perinatal conditions | 2.0 | 3.9 |
| Symptoms and ill-defined (R00-R99) | 9.4 | 11.9 |
Source: Office of the Registrar General, India, MCCD Report 2022, Statements 3.4 and 3.6
On these figures, roughly 1.58 lakh certified deaths in Tamil Nadu in 2022 were from circulatory disease, 52.9% of 2,99,384. Every other major group is smaller in Tamil Nadu than in India, partly because circulatory deaths take up so much of the total. The share coded as ill-defined, where the certificate does not give a usable cause, was 9.4%, better than India’s 11.9% but still close to one certificate in ten.
The risk factors behind the numbers
The pattern fits what the state health department reports on disease burden. Its 2024-25 policy note ranks cardiovascular disease first among causes of healthy years lost to non-communicable disease in Tamil Nadu, using the Global Burden of Disease 2020 estimates, followed by respiratory infections and tuberculosis, and diabetes with kidney disease. The risk factors are visible in survey data for Chennai. The NFHS-5 district fact sheet found 27.2% of women and 22.1% of men aged 15 and over with high blood sugar or on medication, 28.8% of women and 33.2% of men with raised blood pressure or on medication, and 41.9% of women overweight or obese. Later NFHS-6 fact sheets released so far are at state level only (NFHS-6 listing).
It’s often said we know what most people in Tamil Nadu die of from death certificates.
The record shows Only 43.0% of deaths registered in Tamil Nadu in 2022 were medically certified, and 9.4% of those certificates gave an ill-defined cause, per the MCCD Report 2022.
What this means for you
- When a family member dies in hospital, ask for the medical certificate of cause of death; it is the basis of the registered cause and may matter for insurance claims.
- For deaths at home, the cause is usually not certified; families can still register the death within 21 days at the local registrar.
- Heart disease is the leading certified cause in Tamil Nadu; free screening for blood pressure and sugar is offered at government facilities.
- Treat state comparisons of cause of death cautiously; they cover certified deaths only, which are mostly hospital deaths.
What to watch
Pending
The MCCD report for 2023 from the Registrar General of India, which will show whether certification recovered after 2022.
Pending
Results of the e-Mortality integration ordered in December 2022, which should raise the share of hospitals reporting causes.
Checked against official sources on 23 October 2026. Figures and rules change; confirm on the linked official pages before relying on them.
Sources
- Report on Medical Certification of Cause of Death 2022 (Office of the Registrar General, India, 2025)
- Vital Statistics of India based on the Civil Registration System 2022 (Office of the Registrar General, India)
- Health and Family Welfare Department Policy Note 2024-25 (Government of Tamil Nadu)
- National Family Health Survey (NFHS-5) 2019-21, District Fact Sheet: Chennai (MoHFW and IIPS)
- NFHS-6 (2023-24) fact sheet data, state level (OpenCity listing of MoHFW release)
