A policy number is the identifying number for an insurance policy. Insurance companies use policy numbers to identify customers and track policy activity.
All insurance policies have a policy number, including policies issued for automobile, health, travelers, personal property and homeowner or rental insurance . Policy numbers are typically listed on a proof of insurance card, as is common with health insurance, or on an official summary of coverage.
Policy holders must reference policy numbers when filing claims, making payments via check or when contacting customer service. In order to prevent fraud or identity theft, insurance policy numbers should be kept private, according to the Insurance Information Institute.