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Coinsurance in Health Insurance : Your Share of Medical Costs

A person with a 20% coinsurance visits their doctor for a routine checkup. The total cost of the visit is ₹1,000. They have already met their deductible for the year. Therefore, they would pay 20% of the cost, which is ₹200, and their insurance company would pay the remaining ₹800.Coinsurance is a cost-sharing mechanism in health insurance where the insured individual and the insurance company share the cost of covered medical expenses. Understanding how coinsurance works is crucial for managing your out-of-pocket expenses and making informed decisions about your healthcare coverage.

What is Coinsurance?

Coinsurance is a percentage of the cost of a covered healthcare service that you are responsible for paying after you have met your deductible. For example, if your health insurance plan has a 20% coinsurance, you will be responsible for paying 20% of the cost of covered medical expenses, and your insurance company will pay the remaining 80%.

How Coinsurance Works

Coinsurance usually comes into play after you have met your deductible. For example, if your plan has a $1,000 deductible and a 20% coinsurance, you would first pay the $1,000 deductible out of pocket. After that, for any covered medical expenses, you would pay 20% of the cost, and your insurance company would pay 80%.


Let's say you undergo a surgery that costs ₹50,000. Your health insurance plan has a ₹1,000 deductible and a 20% coinsurance. Here's how the costs would break down:

  1. Deductible: You pay the first ₹1,000 of the surgery cost.

  2. Coinsurance: You pay 20% of the remaining ₹49,000, which is ₹9,800.

  3. Insurance Payment: Your insurance company pays the remaining 80% of ₹49,000, which is ₹39,200.

Factors Affecting Coinsurance

  • Type of Service: Coinsurance percentages can vary depending on the type of healthcare service you receive.

  • In-Network vs. Out-of-Network Providers: Coinsurance rates may be higher for out-of-network providers.

  • Health Insurance Plan: Different health insurance plans have different coinsurance percentages.

Benefits and Drawbacks of Coinsurance


  • Lower Premiums: Health insurance plans with higher coinsurance rates typically have lower monthly premiums.

  • Cost Control: Coinsurance encourages patients to be more mindful of the cost of healthcare services and may help reduce unnecessary utilization.


  • Out-of-Pocket Expenses: Coinsurance can lead to significant out-of-pocket expenses, especially for individuals with chronic health conditions or those who require frequent medical care.

  • Financial Barriers to Care: High coinsurance rates can deter people from seeking necessary medical care due to the financial burden.

Tips for Managing Coinsurance

  • Understand Your Policy: Carefully review your health insurance policy to understand the coinsurance percentages for different types of services.

  • Choose In-Network Providers: Utilize in-network providers whenever possible to benefit from lower coinsurance rates.

  • Track Your Expenses: Keep track of your medical expenses throughout the year to anticipate your out-of-pocket costs.

  • Utilize Preventive Care: Many health insurance plans cover preventive care services at 100%, so take advantage of these benefits to maintain your health and reduce the risk of costly medical conditions.

Coinsurance is a crucial aspect of health insurance that affects your out-of-pocket expenses. By understanding how it works and taking proactive steps to manage your healthcare costs, you can make the most of your health insurance coverage and ensure access to quality care.

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