In a no-fault state, am I still required to prove who was at fault in an accident when filing a claim?

In a no-fault state, the primary objective is to expedite compensation for injuries and damages without establishing fault. 

Generally, you're not required to prove fault when filing a claim in a no-fault state. Instead, Personal Injury Protection (PIP) coverage, mandated in these states, allows you to seek reimbursement for medical expenses and certain other losses from your own insurance company, regardless of who caused the accident.  

This system aims to provide quicker access to benefits and minimize legal disputes over fault, focusing more on accessing immediate coverage rather than assigning blame for the accident 

your own insurance policy, particularly Personal Injury Protection (PIP), covers your medical expenses and related costs regardless of fault.