Insurance billing basics for therapists in private practice

The billing cycle in one paragraph

Before the session, you check the client's coverage. After the session, you sign your note, and a claim goes to the payer through a clearinghouse. The payer responds with a payment and a remittance (an ERA) that explains what was paid and why. The remittance distinguishes payer payment, contractual adjustments and patient responsibility. Confirm the permitted patient balance before invoicing; an unpaid amount is not automatically owed by the client. That's the whole loop; most billing pain comes from one of these steps being skipped or done late.

Check eligibility before the session, not after

Coverage changes: plans lapse, deductibles reset, copays move. A quick eligibility check before the visit tells you the copay and the deductible left, so there are no surprises for you or the client. Modern EHRs can run this automatically a day or two before each appointment.

Clean claims get paid faster

A claim is "clean" when the codes, diagnosis, provider details and client details all agree. The usual rejects are avoidable: a CPT that doesn't match the session length, a missing diagnosis link, or the wrong rendering provider. A checklist before submission catches these in seconds; an appeal afterwards costs weeks.

Read your ERAs

The ERA is where you learn what a payer actually pays you. If it posts automatically into your EHR, look at the pattern monthly: repeated denials on one code or one payer usually have a single fixable cause.

Self-pay still needs paperwork

For uninsured or self-pay clients, follow the applicable Good Faith Estimate requirements, including requests and qualifying scheduled care. A superbill can support an out-of-network reimbursement request, but reimbursement depends on the plan. Review the CMS guidance on estimates.

If billing is the part of practice you dread, it's worth seeing how much of this loop can run on its own.