Medical Underwriting of Diabetes
Type, age at onset, control and complications decide where a diabetic applicant lands.
Diabetes mellitus is one of the commonest impairments a life underwriter sees in India, and one of the most variable. A 55-year-old with well-controlled type 2 diabetes found two years ago and a 25-year-old who has needed insulin since childhood are very different risks, though both tick the same box on the proposal form. The underwriter's job is to work out where on that range the applicant sits.
The extra mortality in diabetes comes mostly from what it does to blood vessels over the years. Coronary heart disease is the most common cause of death in people with diabetes, and diabetes is a leading cause of kidney failure and of blindness in working-age adults. So the underwriter looks less at the diagnosis itself and more at how long the applicant has had it, how well it is controlled and whether damage to other organs has begun.
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Types of Diabetes
Type 1 (formerly juvenile or insulin-dependent)
What happens
The pancreas makes little or no insulin, usually from childhood or early adulthood
Usual treatment
Insulin always
Underwriting view
Early onset means a long lifetime of exposure to complications, so it is generally the heavier risk
Type 2 (formerly non-insulin-dependent)
What happens
The body becomes resistant to insulin or makes too little; usually found after 40 and linked to weight
Usual treatment
Diet and exercise, then oral medicines, sometimes insulin later
Underwriting view
Ranges from near standard to heavily rated, depending on age at onset, control and complications
Gestational
What happens
Raised blood sugar first found in pregnancy
Usual treatment
Diet or medication during pregnancy
Underwriting view
Usually postponed until after delivery; a past history is a marker for later type 2
Prediabetes (impaired fasting glucose or glucose tolerance)
What happens
Blood sugar above normal but below the diabetic range
Usual treatment
Lifestyle change
Underwriting view
Treated more lightly than diabetes, but watched with build and blood pressure
| Type | What happens | Usual treatment | Underwriting view |
|---|---|---|---|
| Type 1 (formerly juvenile or insulin-dependent) | The pancreas makes little or no insulin, usually from childhood or early adulthood | Insulin always | Early onset means a long lifetime of exposure to complications, so it is generally the heavier risk |
| Type 2 (formerly non-insulin-dependent) | The body becomes resistant to insulin or makes too little; usually found after 40 and linked to weight | Diet and exercise, then oral medicines, sometimes insulin later | Ranges from near standard to heavily rated, depending on age at onset, control and complications |
| Gestational | Raised blood sugar first found in pregnancy | Diet or medication during pregnancy | Usually postponed until after delivery; a past history is a marker for later type 2 |
| Prediabetes (impaired fasting glucose or glucose tolerance) | Blood sugar above normal but below the diabetic range | Lifestyle change | Treated more lightly than diabetes, but watched with build and blood pressure |
Tests Underwriters Order
Diagnostic cut-offs below are the WHO and American Diabetes Association criteria.
Fasting blood sugar
What it shows
Glucose after at least 8 hours without food
Diabetic range
126 mg/dL or more
2-hour oral glucose tolerance test
What it shows
Glucose 2 hours after a 75 g glucose load
Diabetic range
200 mg/dL or more
HbA1c (glycosylated haemoglobin)
What it shows
Average blood sugar over roughly the past 2-3 months; the main test of control
Diabetic range
6.5% or more
Urine sugar
What it shows
Sugar spilling into urine when blood levels are high
Diabetic range
Any glycosuria needs follow-up
Urine microalbumin and serum creatinine
What it shows
Early and later signs of kidney damage
Diabetic range
Raised values point to nephropathy
Lipid profile and ECG
What it shows
Cardiovascular risk that diabetes multiplies
Diabetic range
Read together with the diabetes
Attending physician's statement
What it shows
Date of diagnosis, treatment history, control and complications from the treating doctor
Diabetic range
Usually required for insulin users and large covers
| Test | What it shows | Diabetic range |
|---|---|---|
| Fasting blood sugar | Glucose after at least 8 hours without food | 126 mg/dL or more |
| 2-hour oral glucose tolerance test | Glucose 2 hours after a 75 g glucose load | 200 mg/dL or more |
| HbA1c (glycosylated haemoglobin) | Average blood sugar over roughly the past 2-3 months; the main test of control | 6.5% or more |
| Urine sugar | Sugar spilling into urine when blood levels are high | Any glycosuria needs follow-up |
| Urine microalbumin and serum creatinine | Early and later signs of kidney damage | Raised values point to nephropathy |
| Lipid profile and ECG | Cardiovascular risk that diabetes multiplies | Read together with the diabetes |
| Attending physician's statement | Date of diagnosis, treatment history, control and complications from the treating doctor | Usually required for insulin users and large covers |
Factors That Drive the Decision
- Type
- Type 1 generally carries more extra mortality than type 2 at the same age because the disease starts earlier.
- Age at onset and duration
- The younger the age at diagnosis and the longer the duration, the greater the chance of complications. Late onset is favourable.
- Control
- HbA1c readings over time. Consistently near-normal values are the strongest favourable factor; persistently high values are heavily rated or declined.
- Treatment
- Diet alone, oral medicines and insulin form a rough scale of severity in type 2, though good control on insulin can beat poor control on tablets.
- Compliance
- Regular check-ups and medication show the applicant manages the disease. Missed follow-up or unknown recent values count against.
- Complications
- Retinopathy, nephropathy (protein in urine, raised creatinine), neuropathy and heart or vascular disease. Their presence changes the risk more than any other factor.
- Co-existing risks
- Overweight, raised blood pressure, abnormal lipids and smoking add to the diabetic risk and are often rated in combination rather than simply added.
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How Findings Typically Move the Outcome
The direction of each outcome is common across manuals. The actual ratings belong to each insurer and reinsurer.
| Profile | Typical direction of the decision |
|---|---|
| Late-onset type 2, short duration, good control, no complications | Accepted at or close to standard rates, or with a modest extra |
| Type 2 with average control, or with build or blood pressure problems | Accepted with an extra premium |
| Type 1, or young-onset type 2, well controlled | Usually rated, with the rating lower the older the applicant is |
| Poor control, or early complications | Heavily rated |
| Advanced complications (kidney failure, severe vascular disease) or very poor control | Declined |
| Newly diagnosed, treatment still being settled, or gestational diabetes in the current pregnancy | Postponed until control is established |
Riders Are Stricter Than Life Cover
Insurers are far more cautious with critical illness, disability and health riders for diabetics than with the basic life cover, because diabetes directly raises the chance of heart attack, kidney failure and blindness that those benefits pay for. An applicant can be accepted for life cover and still be declined or rated more heavily for these riders.
Not Medical Advice
This page explains how life insurers assess diabetes for the IC-22 syllabus. It is not medical guidance. Test thresholds and ratings in real cases come from the treating doctor and the insurer's own manual.
FAQs
Can a diabetic get life insurance in India?expand_more
Usually yes. Well-controlled type 2 diabetes without complications is often accepted, sometimes at an extra premium. Poor control or advanced complications can lead to a decline. The decision is each insurer's.
Why do insurers ask for HbA1c?expand_more
HbA1c reflects average blood sugar over the past two to three months, so one test shows long-term control rather than a single day's reading.
Is type 1 diabetes rated more heavily than type 2?expand_more
Generally yes, because it starts earlier in life and so gives more years for complications to develop. A well-controlled older type 1 applicant can still be accepted on rated terms.
What is the most common cause of death in diabetics?expand_more
Coronary heart disease. That is why underwriters review blood pressure, lipids and ECG findings alongside blood sugar.
Which diabetic complications matter most to an underwriter?expand_more
Kidney damage (nephropathy), eye damage (retinopathy), nerve damage (neuropathy) and heart or vascular disease. Kidney and heart involvement weigh most heavily.
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