The Definitive Guide to Telehealth Audio-Only Billing for Mental Health in 2026
If you've been billing audio-only telehealth sessions for your therapy or psychiatry practice, you already know the rules feel like they change every time you blink. One year a modifier is required, the next it's optional — and the wrong call costs you thousands in denials or, worse, triggers a payer audit.
This guide cuts through the noise. Whether you're an LPC in a rural practice, an LCSW at a group clinic, or a psychiatrist seeing patients across multiple states, here's everything you need to know about audio-only telehealth billing for mental health in 2026 — including the specific CPT codes, modifiers, payer-by-payer rules, documentation standards, and audit red flags you need on your radar right now.
Why Audio-Only Telehealth Still Matters in 2026
Let's be real: most payers — and even most clinicians — prefer video. But audio-only isn't going away, and here's why it still matters:
- Digital equity gaps persist. Roughly 1 in 5 rural Americans lacks access to reliable broadband. For elderly patients, those with disabilities, or clients in low-income households, a phone call may genuinely be the most accessible format.
- Medicare extended audio-only flexibilities through 2026 (and likely beyond). Congress and CMS have repeatedly signaled that audio-only behavioral health services are a permanent fixture of the telehealth landscape.
- State Medicaid programs have widely adopted audio-only parity. As of 2026, the majority of state Medicaid programs explicitly cover audio-only mental health services, though reimbursement rates and documentation requirements vary considerably.
- Many commercial payers follow CMS's lead. When CMS codifies audio-only coverage, most Blues plans, United, Aetna, and Cigna tend to align — with their own footnotes, of course.
Bottom line: audio-only is a legitimate, reimbursable, and critically important service modality. What you need is a billing and documentation system that keeps you covered.
The Core CPT Codes for Audio-Only Mental Health Services in 2026
This is where most billing errors start — using the wrong code for the wrong modality. Here's your cheat sheet:
Psychotherapy CPT Codes (Audio-Only)
| CPT Code | Service Description | Typical Time | 2026 Medicare Rate (approx.) |
|---|---|---|---|
| 90832 | Psychotherapy, 16–37 minutes | ~30 min | $76–$82 |
| 90834 | Psychotherapy, 38–52 minutes | ~45 min | $111–$118 |
| 90837 | Psychotherapy, 53+ minutes | ~60 min | $152–$162 |
| 90846 | Family therapy w/o patient | Variable | $108–$114 |
| 90847 | Family therapy with patient | Variable | $116–$124 |
| 90853 | Group psychotherapy | Variable | $35–$42 |
Note: Medicare rates shown are approximate 2026 national facility/non-facility averages. Actual rates vary by locality, practice type, and GPCI adjustments. Always verify current rates in your MAC's fee schedule.
Evaluation & Management (E/M) Codes Used by Psychiatrists
Psychiatrists billing audio-only visits for medication management or psychiatric evaluation will typically use:
| CPT Code | Service Description | 2026 Medicare Rate (approx.) |
|---|---|---|
| 99202–99205 | New patient E/M (outpatient) | $110–$328 |
| 99212–99215 | Established patient E/M (outpatient) | $75–$218 |
| 90792 | Psychiatric diagnostic eval with medical services | $244–$262 |
| 90791 | Psychiatric diagnostic eval (no medical services) | $196–$212 |
Add-On Codes
- 99354 / 99355 – Prolonged service codes, used with E/M visits when total time exceeds the base code threshold.
- 90833 / 90836 / 90838 – Psychotherapy add-on codes for use with E/M codes. Widely used by psychiatrists who provide both medication management and therapy in the same session.
The Modifier Question: What Do You Actually Need in 2026?
Modifiers are where billing teams get tangled up. Here's the current landscape:
Modifier 93 — The Audio-Only Modifier
Modifier 93 was introduced by CMS specifically to designate audio-only telehealth services. As of 2026:
- Medicare: Modifier 93 is required for audio-only behavioral health services billed to Medicare. Do not use Modifier 95 (which designates synchronous audio-video telehealth) for phone-only visits.
- Medicaid: Varies by state. Many state Medicaid programs have adopted Modifier 93, but some still use their own designators (e.g., GT, GQ, or a state-specific modifier). Check your state's Medicaid billing manual.
- Commercial payers: Inconsistent. Some require Modifier 93, some require Modifier 95 even for audio-only (yes, really — check your contracts), and some require no modifier at all. Always verify with each payer's telehealth policy before submitting.
Modifier 95 — Synchronous Telemedicine (Audio-Video)
Use Modifier 95 for live, two-way, audio-video telehealth sessions. If you accidentally use this for a phone-only session, you're misrepresenting the service modality — a compliance risk, not just a billing inconvenience.
Place of Service (POS) Codes
- POS 10 – Telehealth provided in the patient's home (most common for audio-only outpatient mental health)
- POS 02 – Telehealth provided in a location other than the patient's home
For most outpatient telehealth mental health billing in 2026, POS 10 is the correct choice when your patient is calling from home.
Payer-by-Payer Breakdown: What Major Insurers Require in 2026
Here's a high-level overview of what the major payers require for audio-only mental health billing. Always verify with current payer policy — this space changes frequently.
| Payer | Audio-Only Mental Health Covered? | Required Modifier | POS Code | Notes |
|---|---|---|---|---|
| Medicare (Traditional) | ✅ Yes | Modifier 93 | POS 10 | Must document why video not used for non-behavioral health; BH has broader audio-only access |
| Medicare Advantage | Varies by plan | Varies | Varies | Check individual plan's telehealth rider |
| Medicaid (Federal Floor) | ✅ Yes (BH) | State-specific | State-specific | Most states cover audio-only BH through 2026 |
| UnitedHealthcare | ✅ Yes | Modifier 95 or 93 (plan-specific) | POS 10 | Check individual plan policy; often requires prior auth for certain codes |
| Aetna | ✅ Yes (most plans) | Modifier 95 | POS 10 or 02 | Commercial vs. Medicaid plans differ |
| Cigna | ✅ Yes | Modifier 95 | POS 10 | Confirm via Cigna telehealth policy portal |
| BlueCross BlueShield | Varies by state plan | Varies | Varies | Each BCBS affiliate sets its own policy — verify locally |
| Tricare | ✅ Yes | Modifier 95 | POS 10 | Audio-only expanded post-COVID; confirm current policy |
Pro tip: Don't assume your Medicare policy applies to Medicare Advantage. MA plans are privately administered and can set their own telehealth rules within CMS guidelines. Always call or check the plan portal before billing a new MA patient for audio-only.
Documentation Requirements: What You Must Capture for Audio-Only Sessions
This is where many otherwise correctly-billed audio-only claims fall apart in an audit. Your documentation needs to do three things: justify the modality, support the service level, and demonstrate medical necessity.
The Non-Negotiables for Every Audio-Only Note
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Clearly state the modality. Don't just say "telehealth." Document specifically: "This session was conducted via telephone (audio-only) without video."
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Reason the patient could not or did not use video (required by some payers, best practice for all). Options include: patient lacks video-capable device, patient in a location without reliable internet, patient preference documented, clinical appropriateness determined.
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Patient location at time of service. Document the patient's city and state. This matters for licensure compliance and for verifying POS code accuracy.
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Your location at time of service. Particularly important for cross-state telehealth licensing compliance.
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Verbal consent for telehealth. Many payers and state laws require documented patient consent for telehealth services. Note that consent was obtained and how (verbally at start of session, signed consent on file, etc.).
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Time. For time-based codes (which most psychotherapy codes are), you must document the total face-to-face time of the session. This should be specific: "Session duration: 53 minutes" — not "approximately one hour."
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Clinical content. Same standards as in-person: presenting concerns, mental status, interventions, response to treatment, risk assessment (if indicated), plan.
A Note on Risk Documentation
Audio-only adds complexity to safety assessments. You cannot visually assess a patient's affect or environment. Your notes should reflect this: "Auditory presentation consistent with calm affect; patient verbally denied current SI/HI/intent/plan. Safety planning reviewed verbally." This protects you clinically and legally.
The 5 Most Common Audio-Only Billing Errors (And How to Avoid Them)
1. Using Modifier 95 Instead of 93 for Medicare Audio-Only
Medicare is explicit: Modifier 93 = audio-only; Modifier 95 = audio-video. Mixing these up results in denials and, if it's a pattern, potential fraud flags.
2. Billing the Wrong Time-Based Code
If your session was 45 minutes, bill 90834 — not 90837. Upcoding time is a common audit trigger. Your documentation must support the exact code billed.
3. Forgetting to Document Patient Consent
Some payers will deny audio-only claims outright if your note doesn't reflect that telehealth consent was obtained. Make this a standard part of your session opening.
4. Using POS 02 When the Patient Is at Home
POS 02 (non-home telehealth) can result in different reimbursement rates than POS 10 (patient home). More importantly, incorrect POS can flag as a billing error on audit.
5. Not Verifying Audio-Only Coverage Before the First Session
Payer policies change. What was covered last year may have new restrictions, new modifier requirements, or prior authorization requirements this year. A quick pre-authorization check saves significant headache.
State Licensing Compliance: The Asterisk on All of the Above
Here's the compliance issue that billing guides often gloss over: you can bill correctly and still be in violation of professional licensing law.
As of 2026, most states require you to be licensed in the state where your patient is physically located at the time of service — not where you're licensed, not where your practice is based, not where the patient lives.
For audio-only specifically, the risks are heightened: patients on the phone could be in their car, at their parents' home in another state, or traveling. Your intake process and documentation should capture the patient's physical location at the time of each session.
The PSYPACT compact (for psychologists) and Counseling Compact (for LPCs and licensed counselors) help with multi-state practice, but coverage varies. Check compact participation at the time of your patient's session — not just at intake.
Audit Defense: What Payers Are Looking For in 2026
If you're billing audio-only telehealth at volume, you should assume you're on someone's radar. Here's what post-payment audits are looking for:
- Modifier inconsistency: Are you billing 93 for some sessions and 95 for others without clinical justification? That's a pattern that triggers review.
- Documentation not matching code level: Your note says the session was 30 minutes; you billed 90837 (53+ minutes). Automatic denial, potential recoupment.
- Missing telehealth consent documentation
- No stated reason for audio-only vs. video
- Billing audio-only codes for services that require in-person delivery (e.g., some psychological testing procedures)
- Billing audio-only for new patient intakes without appropriate justification — some payers scrutinize this more heavily than established patient visits
The best audit defense is clean, consistent, specific documentation — every single session, every single time.
Frequently Asked Questions About Audio-Only Telehealth Billing in 2026
1. Can I bill a 90837 (60-minute session) for an audio-only phone call?
Yes — if the session genuinely lasted 53 minutes or more (which is the threshold for 90837), audio-only phone calls are billed with the same psychotherapy CPT codes as video sessions. The modality changes your modifier and POS code, not the base CPT. However, your documentation must clearly state the session duration and support the code billed.
2. Does Medicare require a specific reason why the patient couldn't use video for audio-only mental health services?
For behavioral health services specifically, Medicare has been more permissive than for general E/M services. CMS has recognized that requiring justification for audio-only may create barriers to mental health care access. However, best practice — and some MAC guidance — still recommends documenting the patient's reason for audio-only (preference, lack of device, lack of internet, etc.). It takes one sentence and protects you significantly.
3. I'm an LMFT. Can I bill Medicare for audio-only telehealth sessions?
Yes. As of 2024 forward, Licensed Marriage and Family Therapists (LMFTs) and Licensed Professional Counselors (LPCs) became eligible Medicare providers under the Consolidated Appropriations Act. This means you can now directly bill Medicare — including for audio-only telehealth — using your own NPI. If you haven't enrolled as a Medicare provider yet, that needs to happen before billing.
4. What's the reimbursement difference between audio-only and audio-video telehealth under Medicare?
Under current Medicare policy, there is no payment differential between audio-only and audio-video telehealth for covered behavioral health services. Both modalities reimburse at the same rate as the in-person equivalent when billed correctly. This parity was a significant CMS policy decision and is one reason audio-only billing is worth doing correctly rather than avoiding entirely.
5. My patient called me while traveling out of state. Can I still bill for the session?
You can bill — but you need to consider two things. First, are you licensed to provide services in the state where the patient was physically located during the call? If not, you may have a licensure compliance issue regardless of billing. Second, document the patient's physical location in your note. If an audit arises, "patient was temporarily located in [State] during session" in your documentation shows due diligence. This is a situation worth discussing with your malpractice carrier and legal counsel.
6. Do I need a telehealth consent form on file specifically for audio-only sessions?
Most state licensing boards and many payers require a documented telehealth informed consent — and audio-only is a form of telehealth. Your consent form should ideally address both audio-video and audio-only modalities, and you should document in each note that consent is on file or was obtained verbally at the start of the session. A one-time signed consent at intake that covers all telehealth modalities is the most efficient approach.
7. How do group practices handle audio-only billing for multiple clinicians?
Group practices should establish a written telehealth billing policy that specifies: which modifiers each payer requires, how to document audio-only vs. audio-video, the POS code workflow, and how to handle out-of-state patient location situations. All clinicians should be trained on it, and documentation compliance should be audited internally at least quarterly. Inconsistency across clinicians in a group is a significant audit risk.
The Bottom Line: Audio-Only Is Here to Stay — Bill It Right
Audio-only telehealth isn't a workaround or a temporary pandemic accommodation. In 2026, it's a recognized, reimbursed, and valuable service modality for behavioral health — and for millions of patients, it's the most accessible form of mental health care available.
But "recognized and reimbursed" doesn't mean "easy to bill." The modifier rules, payer-by-payer variation, documentation standards, and licensure compliance considerations make audio-only one of the more complex billing scenarios in behavioral health practice.
The practices that get it right are the ones with systems — clear documentation templates, pre-visit eligibility workflows, and consistent note quality that supports every code they bill.
How Mozu Health Helps You Get Audio-Only Billing Right Every Time
At Mozu Health, we built our AI-powered clinical documentation platform specifically for the realities of behavioral health practice in 2026 — including the nuances of telehealth billing, audio-only documentation, and payer compliance.
Here's what that looks like in practice:
- Smart documentation templates that automatically prompt you to capture audio-only session details — modality, patient location, session duration, consent — so nothing gets missed.
- Billing accuracy checks that flag potential code-documentation mismatches before you submit, reducing denials and audit risk.
- HIPAA-compliant note generation that produces thorough, time-stamped, defensible clinical records — the kind that wins audits.
- Payer-specific guidance built into your workflow, so you're not hunting through policy portals to figure out whether UnitedHealthcare wants Modifier 93 or 95 for that audio-only session.
- Audit defense support through clean, consistent documentation that tells the right clinical story every time.
Whether you're a solo therapist, an LCSW at a community mental health center, or managing a 20-clinician group practice, Mozu Health helps you spend less time on paperwork and more time with patients — without the compliance anxiety.
Ready to see how Mozu Health can simplify your telehealth billing and documentation?
👉 Try Mozu Health free at mozuhealth.com — no credit card required.
This post is for educational purposes and reflects general guidance as of 2026. Billing rules, payer policies, and regulatory requirements change frequently. Always verify current requirements with your MAC, payer contracts, and legal/compliance counsel before implementing billing changes in your practice.
