Mental health billing service is the process of managing insurance claims and payment procedures for behavioral health providers, including psychologists, psychiatrists, therapists, counselors, and mental health clinics. It involves verifying patient insurance eligibility, assigning accurate medical codes, submitting claims to insurance companies, tracking reimbursement, resolving denied claims, and maintaining compliance with payer guidelines. An effective mental health billing service helps healthcare practices improve payment accuracy, reduce administrative workload, maintain a healthy revenue cycle, and allow providers to focus more on delivering quality patient care.