Mental health billing that keeps every session authorized and paid

Time-based psychotherapy codes and the note that supports them

The three individual psychotherapy codes are defined by time. CPT sets 90832 at 16 to 37 minutes, 90834 at 38 to 52 minutes and 90837 at 53 minutes or more, and the note has to show either start and stop times or a total that lands in the range billed. A clinician who schedules fifty-minute sessions and habitually bills 90837 will eventually be asked for records, and a note that says only "60-minute session" does not settle the question.

Prescribers add a second layer. When a psychiatrist or psychiatric nurse practitioner provides an E/M service and psychotherapy in the same visit, the therapy is billed with an add-on code (90833, 90836 or 90838) and only the psychotherapy minutes count toward it. Time spent on medication management belongs to the E/M level and cannot be counted twice. We check the two halves of the note against each other before the claim leaves.

Authorizations counted in units, not dates

Most commercial behavioral plans authorize a number of sessions over a period rather than an open-ended benefit, and some authorize only the diagnostic evaluation before asking for a treatment plan. The clinician's count and the payer's count drift apart whenever a no-show is recorded as a visit, a session is billed under a code other than the one approved, or two clinicians in the same group see the same patient.

We keep the authorization balance on the patient record inside your practice management system, decrement it as claims go out rather than when appointments are scheduled, and start the reauthorization request while sessions remain. A CO-197 on a long-term patient is almost always a request that was started too late, not one that was refused.

Carve-outs and EAP sessions: the payer on the card is not always the payer

Many employer plans carve behavioral health out to a managed behavioral health organization. The patient presents a card from a national medical carrier, but the mental health benefit is administered by a separate vendor with its own payer ID, its own authorization desk and its own provider file. A claim sent to the medical carrier comes back as CO-109, not covered by this payer, and the filing clock keeps running while it does.

Eligibility verification for a therapy practice therefore has to answer a different question than it does in primary care: not just is the patient covered, but who covers the behavioral benefit and whether the clinician is on that vendor's roster. Employee assistance program sessions are a further wrinkle: their own authorization number, a fixed number of visits, often a separate EAP payer, and a flat rate regardless of the code. When the EAP visits run out the client moves to the regular benefit, which may be a different payer again, and the switch has to be caught before the next claim goes out.

Telehealth rules that changed and keep changing

Telehealth is a large part of outpatient therapy now and the billing rules for it never converged. One payer wants modifier 95 with place of service 10 for a patient at home; another wants the office place of service with 95; a Medicaid plan may still want GT. Audio-only sessions have their own modifier, 93, and not every plan pays for them. Medicare covers mental health visits furnished to a patient at home by telehealth and has its own set of conditions attached.

We hold the current telehealth rule for each payer you bill and apply it at claim scrubbing, so a rule change becomes one edit to a table rather than a month of CO-4 denials. When a payer changes its policy mid-year, the claims already denied under the old rule are corrected and resubmitted as a batch.

Mental health billing across licensure levels

A group practice may have psychologists, licensed clinical social workers, professional counselors, marriage and family therapists and psychiatric nurse practitioners, and payers do not treat them alike. Medicare began enrolling marriage and family therapists and mental health counselors in 2024; before that their sessions were not billable to Medicare at all. Medicaid plans in many states require a level-of-education modifier such as HO, HN or HP on the claim.

Pre-licensed associates working under supervision are the most common source of unpaid sessions we see in group practices. Whether a payer pays for them, and under whose credentials, is payer by payer. We map every clinician to every payer before they see their first insured patient, track credentialing so nobody is scheduled with a payer before their effective date, and make sure the rendering NPI on the claim is always the person the payer has actually credentialed.

Self-pay clients, superbills and the good faith estimate

A therapy practice usually has a second book of business that never touches a claim: clients paying cash, and clients who submit their own out-of-network claims from a superbill. The superbill has to carry the same CPT code, diagnosis, rendering NPI and place of service a claim would, or the client's reimbursement is denied and the practice hears about it. Cash balances need a card on file and a clear no-show policy, since a missed session cannot be billed to any insurer.

Since 2022 the No Surprises Act has also required a written good faith estimate for every uninsured or self-pay client before the first session, updated when the treatment plan changes. Most therapy practices know the rule and few produce the document consistently. We build the estimate into intake so it is generated from the fee schedule automatically, and run the patient billing side of the practice as cleanly as the insured side.