You can send the documents to the company's registered address: ICICI Lombard House, 414, Veer Savarkar Marg, Near Siddhi Vinayak Temple, Prabhadevi, Mumbai - 400025. Alternately, the claim intimation can be done through ICICI Lombard's 24x7 toll free number 1800-2666 or by SMS 'HEALTHCLAIM' to 575758 (charge Rs 3 per SMS).