For insurance claims related to surgeries, insurers require detailed medical documentation to prove the necessity of the procedure. Key documents include a fully completed and signed claim form, the doctor's prescription and consultation notes detailing the diagnosis and treatment plan, hospital discharge summary, and all original bills and receipts from the hospital, pharmacy, and diagnostic tests. Diagnostic reports such as blood tests, X-rays, or scans supporting the treatment are essential. Valid identity proofs (like Aadhaar or passport) and proof of policy ownership should also be submitted. In case of accidental injuries, additional paperwork like FIR or medico-legal certificates may be needed. Proper and organized documentation helps avoid delays or claim rejections. It's advisable to check with the insurance provider beforehand for any specific document requirements to ensure a smooth claim process.