I have held a health insurance policy worth ₹5 lakh for the past decade. However, I now believe that this coverage is inadequate, and I wish to enhance it to ₹50 lakh. Additionally, I had previously made a claim of approximately ₹4 lakh under my current policy four years ago. How do I increase the cover? Will I be eligible to do so with the same insurance company or will I need to look for other insurers?