Group Therapy Billing: CPT 90853, 90847, and 90846 Explained

Short answer: CPT 90853 covers group psychotherapy and is billed once per participant, per session, so a group of eight generates eight claims. 90847 is family therapy with the patient present; 90846 is family therapy without the patient present. The billing itself is straightforward. What isn't straightforward is getting your software to produce eight correct claims from one session without eight rounds of manual work.

Some of what follows comes from the codes themselves. The rest comes from somewhere we're lucky to sit: Oasys runs at the infrastructure layer of working practices, and we talk constantly with therapists and practice owners about how group billing actually behaves on a Tuesday afternoon. The coding rules are the easy part. What it takes to produce eight correct claims from one group session is the part nobody writes down.

The three codes

CPT 90853, Group psychotherapy

Group psychotherapy other than multiple-family group therapy. Covers the treatment of several patients in a single session, where the group dynamic is part of the therapeutic work.

The billing rule that matters most: 90853 is reported per participant. One 90-minute group with eight members is not one claim. It is eight claims, each under that individual client's name, insurance, and authorization.

No time threshold is built into the code the way it is for individual therapy, but payers vary in what they expect for session length and documentation, so check your specific contracts.

CPT 90847, Family psychotherapy, patient present

Family or couples therapy with the identified patient in the room. Typically documented around 50 minutes. Billed under the identified patient.

CPT 90846, Family psychotherapy, patient not present

The same work, without the identified patient, a session with parents, a spouse, or other family members about the patient's treatment. Still billed under the identified patient, even though they weren't there.

The distinction between 90847 and 90846 is presence, not participants. This is the most common mix-up, and it's a clean audit target because the note either documents the patient in the room or it doesn't.

What each note has to show

Group and family notes get scrutinized more than individual notes, because the billing generates multiple claims from one clinical event.

For 90853, each participant's note needs its own content. Not a copy of the group summary with a name swapped. Each note should document that individual's participation, their response to the group work, and progress against their treatment plan goals.

This is the single most common finding in group therapy audits: eight identical notes with different names at the top. It reads exactly like what it is.

For 90847 and 90846, document who was present, whose treatment plan the session serves, and how the family work connects to that plan.

The operational test your EHR either passes or fails

Here is a concrete way to evaluate any platform, and it takes about five minutes in a demo:

Run one group session with eight attendees. Count the clicks to produce eight correct claims.

Software built for solo caseloads makes you do the session eight times, or makes you create the group, then open each client individually to document and charge. Software built for group practices takes one session, one attendance roster, and fans out eight claims and eight note stubs.

The gap between those two designs, at a practice running four groups a week, is hours per week, permanently.

This connects to a broader pattern we hear from practice owners constantly: the operational cost of an EHR rarely shows up on the invoice. It shows up in staff hours. One practice told us 20 hours a week of their billing manager's time went into converting EHR data into a payroll ledger, because the software had no model for how the practice actually worked. Group billing is the same failure in miniature.

Common billing mistakes

Billing 90853 once for the whole group. It's per participant. This is the error that generates the largest recoupments, because it's usually systematic rather than occasional.

Using 90847 when the patient wasn't present. That's 90846. Presence is the deciding factor.

Identical documentation across participants. Each participant's note must reflect that participant.

Missing authorization per client. Every group member needs their own active authorization. One member's lapsed authorization doesn't stop the group, it just stops that claim, and often silently.

Forgetting that group members have different payers. Eight participants can mean five payers with five sets of rules. If your system can't hold per-client billing rules against a shared session, someone is reconciling it by hand.

Group billing gets harder as the practice grows

Practices tell us the same thing about most EHRs: they work until they don't.

"It works quite well for a solo provider, but then really when you start growing, that's when it falls apart."

For group billing specifically, the growth failure is about volume mechanics. A practice running one group a week can absorb manual claim entry. A practice running twelve groups a week across six clinicians cannot, and that's the point where practices start exporting into a second tool. One practice we spoke with does bulk billing through an outside platform in a manual process that takes four-plus hours every month. Another found that verification of benefits in their EHR was "barely functional," so staff check payer portals by hand instead.

None of this is exotic. It's just what happens when group workflows are added to a product designed around one clinician and one client.

What to ask before you commit

1. From one group session, how many actions produce claims for all participants?
2. Can each participant's note be documented individually from the group roster?
3. Can the system hold different payers and different authorizations across one group?
4. Does it flag a lapsed authorization before the session, not after the denial?
5. Can a supervisor review group notes across participants without opening each chart?

How Oasys handles it

One group session, one attendance roster. Claims fan out per participant against each client's own payer and authorization. Each participant gets their own note, prompted against their own treatment plan goals rather than a shared template. Authorization gaps surface before the session rather than as a denial six weeks later.

Pricing is $80 per clinician per month on an annual contract, with no add-ons, group billing isn't a tier you upgrade into.