Medicare mental health billing has never been more complicated, or more consequential. Between the fifth consecutive reimbursement rate cut, a new telehealth in-person requirement that took effect in early 2026, and a landmark expansion of who can bill Medicare independently, practices are navigating a genuinely moving target.

If you see Medicare patients, or are deciding whether to accept them, the billing decisions you make right now will show up in your collections in 90 days. This guide breaks down what changed, who it affects, and how to avoid the mistakes that quietly drain revenue month after month.

Who Can Bill Medicare for Mental Health Services?

The list of providers eligible to bill Medicare for mental health expanded meaningfully in January 2024. Licensed Marriage and Family Therapists (LMFTs) and Licensed Mental Health Counselors (LMHCs), under which Licensed Counselors (LPC or LPCC depending on state) and Masters level Psychologists belong, gained the right to bill Medicare independently for the first time. That's significant, but it comes with important limitations that many practices haven't fully absorbed.

MFTs and LMHCs are permanently reimbursed at 75% of the psychologist rate. That's not a temporary reduction; it's baked into the law. And while LMFTs can now bill Medicare independently.

Supervision adds another layer of complexity. Associate-level providers and providers under clinical supervision typically cannot bill independently regardless of license type.

One more thing that catches practices off guard: Medicare Advantage plans require separate individual panel enrollment per plan. A provider can be enrolled in traditional Medicare and still get denied by an MA plan because they haven't completed that plan's own paneling process. It's a meaningful administrative burden, and it's easy to miss.

Medicare Reimbursement Rates for Mental Health: What to Actually Expect

The reimbursement picture for Medicare mental health got harder before it got slightly better. The 2025 Medicare conversion factor dropped roughly 14% to $32.35, the fifth consecutive annual reduction.[1] Mental health providers already earn approximately 22% less than medical providers for comparable work under Medicare, which means every Medicare session you bill is leaving money on the table compared to a commercial payer.[2] That gap has real consequences: only about 55% of mental health professionals accept Medicare, and low rates are the primary reason.[3]

The 2026 conversion factor offers a partial recovery, rising to approximately $33.59, but only for providers participating in MIPS or an Advanced APM.[1] If your practice hasn't enrolled in either, you don't see the recovery.

Rates also vary by geography. National averages don't tell the full story for a practice in the Twin Cities or Rochester. Before deciding how aggressively to pursue Medicare patients, it's worth pulling your state-specific fee schedule and doing the math on actual session revenue across your payer mix.

For a group practice in Minneapolis with 10 therapists each seeing 8 Medicare patients per week, even a modest per-session rate difference compounds quickly. The monthly A/R audit we run for our clients regularly surfaces situations where practices are unknowingly cross-subsidizing Medicare losses with commercial payer revenue.

The 2025 Telehealth Rule Therapists Need to Know About

This is the rule that blindsided the most practices when it took effect. As of October 1, 2025, Medicare requires an in-person visit within the prior 6 months before billing telehealth for a patient. After that initial visit, providers must have at least one in-person session every 12 months to continue billing telehealth for that patient.[4]

Non-compliance isn't a documentation error you can appeal on medical necessity grounds. It's a binary rule: either the in-person visit happened within the required window, or the telehealth claim gets denied automatically.

The operational challenge is that you're tracking rolling 6 and 12-month windows across every Medicare patient individually. That's not something most EHRs flag by default. A telehealth-first group practice in the Twin Cities that smoothly served 200 Medicare patients remotely throughout 2025 could enter 2026 with significant compliance gaps. They won't find out until denials start rolling in.

The practices that navigated this well started tracking in Q4 2025. They pulled their Medicare telehealth patient lists, identified who was approaching the 12-month window, and proactively scheduled in-person visits. It wasn't glamorous. But it protected revenue that would otherwise have been lost to automatic denials with no appeal path.

Our eligibility verification process flags each Medicare patient who's approaching their in-person visit deadline before the claim goes out. When denials do slip through anyway, our denial follow-up team works to recover them and find the pattern driving them.

Why Medicare Mental Health Claims Get Denied

Coding errors are the most visible cause of Medicare denials, but they're not the most common. Insufficient documentation accounted for 78.3% of improper Medicare psychiatry payments in the 2024 reporting period.[5] The note has to independently justify medical necessity every single session. It's not enough to indicate the session occurred.

Time-based codes (90832, 90834, and 90837) are especially scrutinized. If you bill 90837 for a session documented at 48 minutes, that's a coding error. If you bill 90834 and document 55 minutes, you're underbilling. Medicare auditors specifically look for mismatches in time-based code patterns, and AI-driven payer auditing is making that scrutiny more systematic in 2026.

A few other common denial triggers:

Wrong modifier or place-of-service code: Modifier 95 for telehealth, place-of-service 02 vs. 10 for remote vs. patient's home. A single wrong code means a 100% denial on that claim.
E/M codes billed alongside psychotherapy: E/M codes cannot be used when psychotherapy is the primary reason for the visit. This trips up practices where therapists also have prescribing authority or co-treat with a psychiatrist.
Medicare Advantage plan-specific rules ignored: What's true for traditional Medicare isn't always true for a patient's MA plan. Each plan sets its own policies, and assuming otherwise leads to preventable denials.

The benchmark worth knowing: best-practice behavioral health organizations keep denial rates below 10%.[6] Many practices run higher without realizing it because they're not tracking denial patterns systematically. Good denial tracking turns what looks like scattered billing noise into a pattern you can fix.

Key CPT Codes for Medicare Mental Health Billing

Medicare Part B therapy billing centers on a core set of CPT codes. Here's a quick reference:

90791: Psychiatric diagnostic evaluation (intake). Billed once at the start of care.
90832 / 90834 / 90837: Individual psychotherapy (30 / 45 / 53+ minutes). The most commonly billed codes. Code selection must match documented time precisely.
90846 / 90847: Family therapy without patient / with patient present.
90853: Group psychotherapy. Often underutilized by smaller practices.
H0015: Intensive outpatient (IOP) programs.

The 90834 vs 90837 distinction is one of the most common coding questions we get. 90834 is for sessions of 38 to 52 minutes; 90837 is for sessions of 53 minutes or more. There's no rounding. A 52-minute session is 90834, not 90837.

One additional note: if you're credentialing new providers for Medicare, understanding the enrollment process is its own challenge. Our post on Medicare credentialing for mental health providers walks through what that process involves.

Final Thoughts

Medicare mental health billing is genuinely hard right now. Rate cuts, a new telehealth compliance requirement, a major provider eligibility expansion, and tighter audit scrutiny all landed in the same two-year window. Practices aren't struggling because they're careless. They're struggling because the rules kept changing.

At BreezyBilling, we track these changes so you don't have to. Our team handles Medicare claims, flags telehealth compliance risks before they become denials, and follows up when claims don't come back clean. We were founded by a practicing LICSW/LMFT who runs his own behavioral health clinic, so we understand what these billing rules mean operationally, not just on paper.

If you're seeing Medicare patients and want a second set of eyes on your billing, reach out to start a conversation. We'll take a look at your current setup and tell you honestly what we see.

Sources

2026 Medicare Physician Fee Schedule Final Rule — Centers for Medicare & Medicaid Services, 2025
Medicare Reimbursement for Mental Health Drops 14% in 2025 — MedCare MSO, 2025
Mental Health Reimbursement Rates 2026 — Behave Health, 2026
New Medicare Telehealth Rules for Behavioral Health 2026 — ADSC, 2025
Medicare Fee-for-Service 2024 Improper Payment Data — Centers for Medicare & Medicaid Services, 2024
Behavioral Health Billing Complete Guide — Behave Health, 2024

Medicare Mental Health Billing: What Therapists Need to Know in 2026