it depends on the plan, state and if the provider is a participating provider or not. You have to verify for each plan.
The timely filing limit for Anthem Blue Cross is usually 12 months. Each state will have their own rules but most of them should be around this time limit.
Blue Cross of South Carolina has 365 days filling limit from the date of service.
WHAT IS THE TIMELY FILING
90 days from the dos for innetwork and 120 days for out of network providers
The timely filing limit for Aetna is now only 90 days. However, you can appeal the decision if you have proof of timely filing.
claims filing limit
Timely Filing Limits for Managed Care
90
180
90
1 YEAR
One year.