Denial Management for Mental Health Clinics

Denial management for mental health clinics is the work of preventing, tracking and appealing the denials payers issue on behavioral health claims. Some start with a session note that does not support the code, and others with a claim sent to a plan that does not administer the benefit. On a remittance they look like any other denial. The causes sit upstream, and resubmitting the same claim fixes none of them.

Three mechanisms drive these denials. Medical necessity has to be documented session by session. Carve-outs hand the mental health benefit to a separate administrator. Prior authorization and concurrent review cap visits, dates and levels of care. Each produces a different denial and needs a different fix. Treat them as one pile of denied claims and the practice ends up chasing the wrong problem. The federal parity law limits how plans manage mental health benefits, and it matters on appeal.

Mental health claim denial rates

In Virginia, carriers denied 8.1% of mental health office visit claims in 2024, against 6.7% of medical and surgical office visit claims. The figures come from the state Bureau of Insurance's 2025 parity report, which covered 15 carriers in the individual and group markets. Across all claims, prescriptions included, mental health ran lower: 17.0% against 17.9%.

National survey data is broader. In Experian Health's State of Claims 2025 report, 41% of respondents said payers deny 10% or more of their claims, up from 30% in 2022 and 38% in 2024. Experian surveyed 250 healthcare professionals responsible for financial, billing or claims management decisions in June and July 2025. The report gives no figure by specialty, so 41% is not a mental health rate. Your own numbers matter more than either: denial rate by payer, by CPT code and by reason code, tracked month over month.

Psychotherapy time and medical necessity documentation

Psychotherapy claims need a note for every session, with the time spent, and a treatment record that keeps justifying care.

Psychotherapy codes are time-based. A56937, the Medicare billing article for New York, New England, Illinois, Minnesota and Wisconsin, says to report the code closest to the actual time. That means 16 to 37 minutes for 90832, 38 to 52 for 90834 and 53 or more for 90837. The add-on codes used with an evaluation and management visit, 90833, 90836 and 90838, follow the same bands. The record must also "indicate the time spent in the psychotherapy encounter," the same article says. Florida's Medicare contractor names the method in A57520: "start and stop times or total times must be documented" for 90832, 90834 and 90837. It also tells practices not to report psychotherapy under 16 minutes.

A 90837 with no time in the note gives the payer nothing to support the code billed. Our mental health billing services page explains how a longer session with no recorded time gets downcoded, and the behavioral health billing reference has code-by-code detail.

The note does not have to restate everything every time. A56937 asks for a clinical note for each encounter. Taken together, the notes have to cover diagnosis, symptoms, functional status, a focused mental status exam, treatment plan, prognosis and progress to date. Treatment plans, functional status and prognosis should stay documented and updated, but they "do not need to be delineated for each individual date of service," the article adds.

The article does require a trajectory. It calls for "a periodic summary of goals, progress toward goals, and an updated treatment plan" in the record. High-frequency or long-running care needs more: the treatment plan, progress notes and the patient's condition "should justify the intensity of the services rendered," it says. So add a dated summary of goals and progress, with an updated treatment plan, on a set schedule.

Behavioral health carve-outs and wrong-payer denials

A behavioral health carve-out hands mental health and substance use benefits to a separate administrator. In UnitedHealthcare's 2026 administrative guide, mental health and substance use disorder benefits come from "our affiliate company United Behavioral Health, operating under the brand Optum," depending on the plan. The same guide shows how far the split can go. New York's Empire Plan runs its medical program through UnitedHealthcare and its hospital program through Anthem Blue Cross. Its mental health and substance use disorder program runs through Carelon Behavioral Health Solutions.

Bill the medical plan for a carved-out benefit and the claim comes back denied. X12's standard list of claim adjustment reason codes, or CARCs, has a code for this case. Under CARC 301, the medical plan reports "benefits not available under this plan" and tells you to submit the services to the patient's behavioral health plan. No correction to the original claim fixes it. The fix is a new claim to the behavioral health administrator. CARC 300 is different: the medical plan says it forwarded the claim to the behavioral health plan, so confirm that plan received it before you send another.

The filing limit at the right administrator does not restart when you find the mistake. It runs from the date of service, as our filing deadline reference explains, and the limit depends on the payer, the contract and state law. UnitedHealthcare lets you submit proof of timely filing on reconsideration, to show the delay was outside your control. Its guide asks for the date you sent the claim to UnitedHealthcare or another payer, and the date that payer accepted it. Both dates have to fall within your filing limit.

So verify the behavioral health administrator at intake and at each new plan year. Check with the administrator itself, not only the medical plan.

Mental health prior authorization and concurrent review denials

The reason code on a prior authorization denial tells you what failed. CO-197, or CARC 197, means the authorization was absent. On the X12 code list, CARC 198 means the service went past what the authorization approved, as when sessions outrun the approved count. CARC 302 means the authorization's time limit has expired.

Payers also deny the requests themselves. In 2025 the largest insurers denied 12% of standard prior authorization requests in Medicare Advantage, according to KFF. They denied 14% in Medicaid managed care and 18% on the federal ACA Marketplace. Each rate combines every medical item and service except drugs, and "the aggregated approval statistics do not allow for further analysis into which services are being denied," KFF notes. None of the three is a mental health figure. Our post on why prior authorization approval does not guarantee payment covers what the same data shows about appeals.

Higher levels of care add concurrent review, where the payer decides on continued treatment while it is under way. The federal parity regulations at 29 CFR 2590.712 describe a treatment plan used "to determine whether a specific request should be granted or denied" during concurrent review. For intensive outpatient, partial hospitalization and residential programs, treat each review date as its own authorization event. Treat each step down to a lower level of care the same way, and confirm its authorization before the first day at the new level.

A missed review leaves the days after it unauthorized. At Optum, UnitedHealthcare's behavioral health affiliate, the patient is not the fallback. Its network manual makes the practice responsible for the information concurrent review needs in inpatient, partial hospitalization and residential care. If the practice skips notification or prior authorization, Optum may cut the payment by up to the full rate, and the practice cannot bill the patient for the difference.

How the mental health parity law (MHPAEA) affects denials

The Mental Health Parity and Addiction Equity Act (MHPAEA) bars health plans from limiting mental health and substance use disorder benefits more than medical and surgical benefits. It applies to group health plans and health insurers, not to the practices that bill them. According to CMS, Medicare is a public health plan, not a group health plan or insurer, so the law does not reach it. Small group plans fall under it only through the ACA's essential health benefit requirements. Medicaid managed care plans must meet certain parity requirements through the Social Security Act.

The part that touches denials is what the regulations call nonquantitative treatment limitations. The federal list at 29 CFR 2590.712 includes prior authorization and other medical management standards based on medical necessity, plus network admission and credentialing standards. A plan's processes for mental health benefits must be comparable to, and no stricter than, those for medical benefits. That test applies to the plan "as written and in operation," a standard CMS describes as part of the 2013 regulations.

One provision helps on medical necessity appeals. Under 29 CFR 2590.712(d)(1), a plan must make its mental health medical necessity criteria available to any "contracting provider upon request," as well as to patients. Ask for the criteria the plan applied, then show where the record meets them.

The 2024 parity regulations added requirements to the 2013 ones, and federal enforcement of those additions is on hold. On May 15, 2025, the Departments of Labor, Health and Human Services and the Treasury said they would not enforce them. The pause runs until a final decision in the ERISA Industry Committee's lawsuit challenging parts of the 2024 regulations, plus 18 months. The statute's own obligations, as amended in 2021, continue to apply.

In September 2026, the Labor Department's Employee Benefits Security Administration (EBSA) kept that position in Field Assistance Bulletin 2026-03. It also named three priority areas for enforcing the parity requirements on nonquantitative treatment limitations. One is medical necessity standards and review, where EBSA will focus on "prior authorization, concurrent review, and retrospective review," the bulletin says. For a practice, the parity law is an appeal tool.

Appealing mental health denials: what external review shows

External review is an appeal to an independent reviewer after the plan upholds its own denial. A January 2026 Health Affairs study examined independent medical review in four states from 2019 to 2023. Reviewers overturned "almost one-half" of the coverage denials appealed to them. That figure covers all services, not mental health alone.

Medicaid managed care shows how few denials reach that step. The HHS Office of Inspector General (OIG) looked at 2019 prior authorization denials by 115 Medicaid managed care plans. Independent reviewers overturned 46% of the denials sent to external medical review, in full or in part. But only 14 of the 37 states it examined offered that review, and in those states only 5% of upheld denials ever reached it.

In both studies, independent reviewers overturned almost half the denials sent to them, and the OIG found that few denials get that far. That is the case for working every denial through every level of appeal open to it. Start with the plan's own appeal and its medical necessity criteria, then go to external review where the plan or state offers it. Appeal deadlines differ by payer and plan, so each one belongs on the same tracker as the denial.

Medicare's in-person requirement for mental health telehealth

Medicare's in-person visit requirement for mental health telehealth takes effect after December 31, 2027, according to the CMS telehealth FAQ updated February 26, 2026. From then on, a patient starting mental health telehealth at home needs an in-person, non-telehealth visit within 6 months before the first telehealth service. After that, an in-person visit has to fall within 12 months of each telehealth service, with limited exceptions. Patients who began mental health telehealth at home by December 31, 2027 count as established and instead need at least one in-person visit every 12 months after that date.

The location limits are gone for good. Per the FAQ, the Consolidated Appropriations Act, 2021 removed the geographic and place-of-service restrictions on behavioral health telehealth. Patients can receive it at home, and two-way, audio-only technology qualifies. From January 1, 2028, audio-only care at home needs a practitioner able to offer video and a patient who cannot use it or declines it. On the claim, use POS 10 when the patient is at home and POS 02 when the patient is somewhere else. Since January 1, 2024, Medicare has paid home telehealth at the non-facility rate.

Medicare requires modifier 93 on an audio-only telehealth claim, under 42 CFR 410.78. Commercial payers and Medicaid programs set their own telehealth policies, including the modifier they expect on a video or audio-only visit. Our guide to the top 10 claim denial reasons covers the general telehealth checklist.

A denial prevention workflow for mental health practices

A denial prevention workflow for a mental health practice has three checkpoints before the claim leaves: benefit and administrator verification, authorization tracking and a pre-submission scrub. Our post on denial management fundamentals covers detection and recovery, the work after the claim leaves.

Verification comes first. Confirm the mental health benefit itself, not only active coverage, and identify which company administers it. Check remaining visits where the plan counts them, the copay and deductible, and whether the service needs authorization. Run the check days before the appointment, not at the front desk. Log it in the patient record, because that log is your evidence if the payer later denies for eligibility. Check coordination of benefits at intake too.

Authorization tracking comes second. A working tracker holds the patient, the service authorized and the units approved. It also holds start and end dates, units used against units remaining, and a flag two weeks before expiration. Those fields map to CARC 197, 198 and 302.

Some payers have to offer electronic prior authorization through a Prior Authorization API starting in 2027, under CMS-0057-F, CMS's Interoperability and Prior Authorization final rule. Those payers are Medicare Advantage plans, Medicaid and CHIP programs, their managed care plans and federal exchange issuers. Employer plans are not among them, and an electronic approval still has dates and units to track.

The scrub comes third. Clearinghouse edits can catch eligibility mismatches, modifier errors, place-of-service errors and missing authorization numbers. Then add three behavioral health checks. Match the session time to the code billed, the administrator to the payer on the claim, and the visit count to the authorization.

Altair is a done-for-you billing service that runs the whole revenue cycle for mental health practices, with AI backed by expert in-house billers. It verifies benefits with the right administrator, tracks authorizations and concurrent reviews, and works every denial and appeal. The practice owner sees every claim and every dollar as it moves, not in a monthly report. Altair keeps what it learns about each payer in the system rather than in a person. The practice hires no one and manages no one, and it keeps the EMR and clearinghouse it already uses. Every claim is checked against the payer's current policy before it goes out, so it holds up if the payer reviews it later, and the money stays with the practice. See how Altair runs denial management.

A wrong-payer or expired-authorization denial does not fix itself on resubmission. Someone has to confirm the administrator and the authorization before the session, or the same denial comes back on the next claim.

Common questions