Multiple family group psytx
CPT code 90849 covers group therapy sessions where a therapist works with multiple families at the same time, helping them address mental health concerns together. This is different from individual family therapy or regular group therapy with unrelated patients.
RVU breakdown
Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High
Billing tips
Document the number of families present and participating in each session, not just the total number of individuals
Impact: Prevents denials; auditors specifically verify that multiple family units were present to justify 90849 vs. 90853 (single family group therapy)
Bill per family unit, not per individual participant, when multiple families attend the same group session
Impact: Critical billing distinction: if 4 families attend one 90-minute session, bill 90849 four times (once per family) to capture full reimbursement of approximately $150.08 total rather than $37.52 for a single claim
Verify minimum time requirements with your specific payer, as some require at least 45-50 minutes of therapeutic contact for 90849
Impact: Sessions under payer-specific time thresholds may be denied or downcoded, reducing reimbursement by 100%
Ensure diagnosis codes support medical necessity for family-based intervention, not just individual patient diagnoses
Impact: Use Z-codes (Z63.x family circumstances, Z62.x problems related to upbringing) alongside primary diagnoses to demonstrate family unit involvement and reduce denial risk by 30-40%
Do not bill 90849 on the same date of service as individual psychotherapy (90832-90838) or family psychotherapy without patient present (90846) for the same family
Impact: Unbundling violations result in automatic denial of one or both services; separate services must be medically necessary and clearly documented as distinct sessions
Track and document which specific family members attended each session, including their relationship to the identified patient
Impact: Audits frequently request attendance records; missing documentation can trigger recoupment of payments averaging $37.52 per session over 12-24 month lookback periods
Common denials
Only one family unit documented as present in the session notes
How to appeal: Submit corrected documentation clearly identifying at least two separate family units with different surnames or relationship descriptions; provide attendance log showing multiple families; if only one family was present, accept denial and recode to 90853 (group family therapy with patient present) going forward
Insufficient documentation of therapeutic intervention or session content
How to appeal: Provide complete session note including: families present, duration, therapeutic techniques used, family interactions facilitated, progress toward treatment goals, and plan; cite medical necessity based on treatment plan showing rationale for multi-family group modality
Billed same day as individual or family psychotherapy without clear medical necessity for separate sessions
How to appeal: Submit documentation demonstrating services were distinct and separate (different times, different therapeutic goals, different clinical necessity); if services overlapped, withdraw one claim and establish protocols to prevent future same-day billing conflicts
Medical necessity not established for group family therapy approach versus individual services
How to appeal: Provide treatment plan specifying why multi-family group format is clinically appropriate; include research/clinical rationale for diagnosis/situation; submit previous progress notes showing lack of progress with individual approaches or clinical justification for group modality
Frequently asked questions
What is CPT code 90849 used for?
CPT code 90849 is used for multiple family group psychotherapy, where a licensed mental health provider conducts a therapy session with two or more separate family units present at the same time. This differs from regular group therapy (unrelated individuals) or single-family therapy sessions.
How much does Medicare pay for CPT 90849 in 2025?
Medicare pays $37.52 for CPT 90849 in non-facility settings and $29.44 in facility settings based on the 2025 Medicare Physician Fee Schedule national average rates. Actual reimbursement may vary by geographic locality and MAC adjustments.
Can you bill 90849 for each family or each person in the group?
You bill 90849 once per family unit, not per individual person. If four separate families attend the same multi-family group session, you would submit four claims for 90849 (one for each family), regardless of how many members from each family attended.
What is the difference between CPT 90849 and 90853?
CPT 90849 is for multiple family group psychotherapy (two or more separate families together), while 90853 is for group psychotherapy with unrelated patients (not family units). Code 90847 covers single-family therapy with the patient present, making the number and relationship of participants the key distinction.
How long does a 90849 session need to be?
CPT 90849 does not specify a minimum time requirement in the code descriptor, but most payers expect at least 45-60 minutes of face-to-face therapeutic contact. Always verify specific time requirements with your payers, as policies vary and some may require documentation of session length for reimbursement.
Can 90849 be billed via telehealth?
Yes, CPT 90849 can be billed via telehealth when delivered through real-time audio/video technology. Use modifier 95 or GT (depending on payer preference) to indicate telehealth delivery. Verify that your state licensure and payer policies permit multi-family group psychotherapy via telehealth before providing services.
What documentation is needed to support billing 90849?
Documentation must clearly identify at least two separate family units present, list family members attending from each family, document the duration and therapeutic content of the session, show progress toward treatment goals, and include a treatment plan justifying the multi-family group approach. Missing any of these elements increases denial and audit risk significantly.