CPT Code 90846: The Complete 2026 Billing Guide for Family Therapy Without the Patient
If you've ever billed CPT code 90846 and wondered whether you documented it correctly — or worse, received a claim denial and weren't sure why — you're not alone. Family therapy without the patient present is one of the most misunderstood and under-documented services in outpatient behavioral health billing.
This guide breaks down everything you need to know: what 90846 actually covers, how to document it to survive an audit, what major payers reimburse, and the most common billing mistakes that trigger denials and takebacks.
Let's get into it.
What Is CPT Code 90846?
CPT code 90846 is defined by the AMA as:
"Family psychotherapy (without the patient present), 50 minutes."
This code is used when you meet with a family member, spouse, caregiver, or other collateral contact without the identified patient (IP) in the room — and the purpose of the session is to support the treatment of the identified patient.
Key word: the identified patient's treatment is still the clinical focus. You're not treating the family member. You're gathering collateral information, providing psychoeducation, coaching a caregiver, or addressing family dynamics that directly affect the patient's outcomes.
90846 vs. 90847: Know the Difference
These two codes trip up a lot of clinicians:
| Feature | 90846 | 90847 |
|---|---|---|
| Patient present? | No | Yes |
| Session length | 50 minutes | 50 minutes |
| Who's in the room? | Family/collateral only | Patient + family/collateral |
| Clinical focus | IP's treatment | IP's treatment |
| Billed under | IP's insurance | IP's insurance |
| Avg Medicare rate (2025) | ~$116 | ~$130 |
If the patient walks in halfway through — document it. Some payers will want you to switch to 90847 if the patient is present for a significant portion.
Who Can Bill CPT 90846?
Any licensed behavioral health clinician who provides psychotherapy can bill this code, including:
- Licensed Professional Counselors (LPCs)
- Licensed Clinical Social Workers (LCSWs)
- Licensed Marriage and Family Therapists (LMFTs)
- Psychologists (PhD/PsyD)
- Psychiatrists (MD/DO) — though they more commonly bill E/M codes
- Supervised interns, if billing under a supervisor's NPI (check your state and payer rules)
Nurse practitioners and physician assistants may also bill this in some states under specific payer contracts — always verify.
2025–2026 Reimbursement Rates for CPT 90846
Rates vary significantly by payer, geography, and contract tier. Here's a realistic picture:
| Payer | Approximate Rate | |---|---| | Medicare (national average) | $110–$120 | | Medicaid (varies by state) | $60–$105 | | Aetna | $115–$145 | | UnitedHealthcare | $110–$140 | | Cigna | $115–$150 | | BCBS (varies by plan) | $105–$155 | | Tricare | $95–$120 | | Cash pay (self-pay) | $100–$200+ |
Pro tip: Always check your specific contract rates in your payer portal. These are ballpark figures. Out-of-network rates can be significantly higher.
Medicare uses the Physician Fee Schedule (PFS), and 90846 falls under the non-facility rate. Check CMS.gov for your specific locality's current rate — they update annually in January.
When Is It Clinically Appropriate to Use 90846?
This is where documentation either saves you or sinks you. Before billing 90846, ask yourself: Is this session therapeutically necessary for the patient's treatment?
Clinically appropriate uses include:
- Meeting with parents of a minor patient to discuss treatment progress, behavioral strategies, or school coordination
- Coaching a spouse on how to support a partner with depression or anxiety
- Providing psychoeducation to a caregiver about a patient's OCD, ADHD, or eating disorder
- Addressing family dynamics (conflict, enabling behaviors, trauma history) that directly impact the patient's recovery
- Safety planning consultation with family when a patient is at elevated risk
- Meeting with adult children of a patient with dementia or late-life depression
Not appropriate:
- General support for a family member who isn't the IP's caregiver or treatment support
- Therapy for the family member's own mental health concerns (that's a separate intake)
- Administrative calls under 16 minutes (bill a phone code or don't bill at all)
- Intake interviews with collaterals before the identified patient is established
Documentation Requirements: What Survives an Audit
This is the section you want to print out and tape to your monitor.
Medicare, Medicaid, and commercial payers all agree on one thing: if it isn't documented, it didn't happen. For 90846, your progress note must clearly establish:
1. Identification of the Identified Patient
State the patient's name (or initials per HIPAA protocol) and clarify that this session is in service of their treatment plan.
2. Who Was Present
Document the relationship of each person in the room to the patient. "Mother of identified patient" is better than just "mother."
3. Medical Necessity
Explain why this session is clinically necessary for the patient's treatment. Link it to the treatment plan. "Caregiver education session to support patient's DBT skills generalization at home" is far stronger than "met with mom."
4. Session Duration
Document start and end time. 90846 is a 50-minute code — you need to meet the time threshold. Most payers require at least 38 minutes (the midpoint threshold) for time-based codes. Some require the full 45+ minutes. Know your payer's rule.
5. Clinical Content
What was discussed? What interventions were used? What was the outcome or plan? This doesn't need to be a novel, but it needs to be clinically meaningful.
6. Consent
For adult patients, you typically need written authorization to speak with family members. Document that consent was obtained and is on file. For minors, parents/guardians generally have inherent access, but document it anyway.
Sample Documentation Language
"50-minute family therapy session (without patient present) conducted with [Patient]'s mother, [Collateral Name]. Session focused on psychoeducation regarding [Patient]'s generalized anxiety disorder diagnosis, review of CBT-based coping strategies to reinforce at home, and discussion of school-related stressors identified in treatment plan. Mother reported improved understanding of anxiety triggers. Plan: Continue family sessions monthly to support treatment goals. Patient consent for collateral contact obtained [date] and on file."
That note? Audit-proof.
Common Billing Mistakes with CPT 90846
These are the errors that generate denials, clawbacks, and compliance headaches:
Mistake #1: Not Linking to the Identified Patient's Treatment
If your note reads like a therapy session for the family member rather than support for the IP, payers will question it — and sometimes deny it as "not medically necessary."
Mistake #2: Using 90846 When 90847 Should Be Billed
If the patient participates even briefly, document it clearly. A 10-minute check-in with the patient followed by 45 minutes with family may warrant 90847 instead.
Mistake #3: Billing 90846 Repeatedly Without Justification
Five 90846 sessions in a month will get flagged. You need ongoing clinical documentation supporting why that frequency is medically necessary for the patient's treatment.
Mistake #4: Wrong Diagnosis Code on the Claim
Bill 90846 under the identified patient's diagnosis — not the family member's. This is a common error, especially when using EHR templates.
Mistake #5: Ignoring Modifier Requirements
Some payers (especially Medicaid managed care plans) require modifiers like GT (telehealth), 95, or HQ (group — not applicable here, but know your modifier set). Always check payer-specific guidelines.
Mistake #6: Not Documenting Consent
Without documented consent to speak with a collateral, you've created both a HIPAA vulnerability and a documentation gap that payers can use to deny or take back payment.
Telehealth and CPT 90846
Good news: 90846 is billable via telehealth with most major payers as of 2025, including Medicare (still under flexibilities extended through 2026 per current CMS guidance).
When billing 90846 via telehealth:
- Append modifier 95 (or GT for Medicaid, depending on the plan)
- Document the platform used and that it was HIPAA-compliant
- Note the patient/family member's location at the time of service (some states require this)
- Confirm your state's telehealth parity laws — many require equal reimbursement for audio-visual services
Audio-only (phone) sessions are trickier. Some payers cover them, many don't. Check before you bill.
Can You Bill 90846 and 90837 on the Same Day?
Yes — with caveats.
If you see the patient individually (90837) and then meet with their family without them (90846) on the same date of service, you can bill both — but only if they are genuinely separate, distinct sessions with different clinical content, and your documentation reflects that.
Some payers require an modifier 59 (distinct procedural service) to process both codes on the same day. Always verify payer-specific same-day billing rules before submitting.
Medicare-Specific Rules for 90846
Medicare covers 90846 under Part B for outpatient mental health services. Key rules:
- The identified patient must be an active Medicare beneficiary under your care
- The service must be medically necessary as defined by the patient's diagnosis and treatment plan
- Sessions must be supervised or provided by a qualified mental health professional
- The outpatient mental health treatment limitation (the 190-day inpatient limit doesn't apply to outpatient, but the 20% coinsurance does apply after the deductible)
- FQHC and RHC settings have different billing rules — consult your billing team
Audit Defense: How to Protect Yourself
RAC audits, commercial payer post-payment reviews, and OIG investigations are real. For 90846 specifically, here's how to build your defense:
- Maintain a collateral contact consent log — one document that tracks every 90846 session, who was present, and that consent was on file
- Reference the treatment plan in every 90846 note — auditors look for this connection
- Document time specifically — "Session ran from 2:00 PM to 2:52 PM" is audit gold
- Keep signed consent forms in the patient's record, easily retrievable
- Don't copy-paste notes — duplicate documentation is a major audit red flag
- Use an AI-powered documentation platform that enforces structure and completeness on every note
Frequently Asked Questions About CPT Code 90846
Q1: Does the patient need to consent before I meet with their family under 90846?
Yes, for adult patients. You need written authorization (typically a Release of Information or consent to involve collaterals in treatment) before meeting with family members and billing under the patient's insurance. For minors, parents or legal guardians generally have inherent rights to participate — but document it regardless. Lack of documented consent is a compliance risk and a potential HIPAA issue.
Q2: Can I bill 90846 if I only talked on the phone with a family member for 30 minutes?
Probably not under 90846. This code requires 50 minutes of face-to-face (or video) service. For phone-based collateral contacts, you'd look at phone/telehealth codes specific to your payer contract. Some payers allow telephone E/M codes (99441–99443) in specific scenarios. Many collateral phone calls under 16 minutes are simply not separately billable — they're part of treatment management.
Q3: What if I'm an LMFT — do I bill 90846 differently than a therapist?
The billing mechanics are the same, but LMFTs should be especially careful to document that the session is focused on the identified patient's treatment rather than the family system as a whole (the latter might look like general couples/family therapy rather than collateral support). This distinction matters for medical necessity justification. Check your payer credentialing status — some older payer contracts may not have LMFTs credentialed for 90846 specifically.
Q4: Can a supervised intern bill CPT 90846 under their supervisor's NPI?
It depends on your state and payer. Many states allow supervised provisionally licensed clinicians to provide billable services under a fully licensed supervisor's NPI using an incident-to or supervisory billing model. However, Medicare has strict incident-to rules, and Medicaid varies by state. Always get written confirmation from your payer and document the supervisory relationship clearly in the record.
Q5: How often can I bill 90846 for the same patient?
There's no universal frequency limit, but payers pay attention to outliers. Billing 90846 multiple times per week for an extended period will invite scrutiny. Each session must be independently medically necessary and documented as such. A reasonable clinical frequency is typically once or twice per month for ongoing family coordination. If your clinical situation warrants more, document the clinical rationale thoroughly in your treatment plan.
Q6: What diagnosis code do I use when billing 90846?
Use the identified patient's primary DSM-5 diagnosis. Do not code a diagnosis for the family member. The claim is submitted under the patient's record, using their diagnosis, even though the patient isn't physically present. This is one of the most common billing errors and can result in claim denial or requests for refund.
The Bottom Line on CPT 90846
CPT code 90846 is a valuable, reimbursable service that supports comprehensive behavioral health treatment — but only when billed correctly and documented thoroughly. The two biggest risks are (1) documentation that fails to tie the session to the patient's treatment plan and (2) missing the time threshold.
Get those two things right, and 90846 becomes a reliable part of your clinical and revenue workflow. Get them wrong, and you're looking at denials, audits, and potential clawbacks.
Document Smarter with Mozu Health
Writing compliant, audit-ready notes for every session — including 90846 family sessions — takes time and expertise most clinicians don't have to spare.
Mozu Health is an AI-powered clinical documentation platform built specifically for behavioral health. Mozu helps you:
- Generate structured, payer-compliant progress notes in minutes — including collateral/family session notes that include all the elements auditors look for
- Auto-link sessions to active treatment plan goals so your 90846 documentation always passes the medical necessity test
- Flag documentation gaps before you submit a claim
- Stay HIPAA-compliant with built-in consent tracking and secure records management
- Defend audits confidently with complete, timestamped documentation trails
Whether you're a solo LPC or running a group practice with 20 clinicians, Mozu Health keeps your documentation tight, your billing clean, and your time focused on clients — not paperwork.
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