Behavioral Health Integration (BHI) is the delivery of mental health treatment inside a primary care practice, and CPT 99484 is the Medicare-recognized code for "General BHI" — roughly 20 minutes of clinical staff time per month spent assessing, monitoring, and adjusting a patient's behavioral health care under the treating provider's direction. It is the more flexible cousin of Collaborative Care.

BHI is an umbrella term, not a single program. Medicare recognizes two distinct paths under it: General BHI, billed with 99484, and the Collaborative Care Model (CoCM), billed with 99492, 99493, and 99494. They share a goal — treat behavioral health where patients already get their medical care — but they differ in team structure, intensity, and documentation.

What does CPT 99484 actually cover?

CPT 99484 pays for General Behavioral Health Integration: care management services for a behavioral health condition delivered by clinical staff and directed by the patient's physician or qualified health professional. To bill it, a practice generally documents at least 20 minutes of BHI clinical staff time in a calendar month, spent on activities such as:

• An initial assessment, often using a validated tool like the PHQ-9 for depression or GAD-7 for anxiety.
• A care plan for the behavioral health condition, revised as the patient's status changes.
• Ongoing monitoring — check-ins, symptom tracking, and coordination with the treating provider.
• Continuity with a designated member of the care team.

The condition is typically one the treating provider is managing, such as depression or anxiety. As with other Medicare care-management services, the patient consents to the service before it begins.

How is General BHI different from Collaborative Care (CoCM)?

Both are behavioral health integration, but CoCM is a specific, more structured model. The Collaborative Care Model requires a defined care team and workflow; General BHI does not.

Collaborative Care (99492 / 99493 / 99494) is built around three roles:

• The treating provider (usually the primary care physician), who prescribes and directs care.
• A behavioral health care manager, who tracks the patient with validated measures and coordinates the plan.
• A psychiatric consultant, who reviews the caseload regularly and advises on adjustments without the patient needing a separate appointment.

CoCM also requires a patient registry to track a whole panel and a measurement-based, treat-to-target approach — the team changes the plan when the numbers say a patient isn't improving.

General BHI (99484) relaxes those requirements. There is no mandatory psychiatric consultant, no required registry, and no formal caseload review. The treating provider directs care and clinical staff deliver it. That makes 99484 lower in intensity, and lower in the operational lift needed to run it.

A simple way to hold the distinction: CoCM is a named, team-based system with the most evidence behind it; General BHI is a broader, lighter-weight way to bill for integrated behavioral health work that doesn't fit the full CoCM structure.

How do the CoCM codes and time thresholds work?

Collaborative Care is billed by time in a calendar month, which is why its documentation is more involved than 99484:

• 99492 — the initial month, reflecting a larger block of care manager and consultant time as the patient is onboarded.
• 99493 — a subsequent month of continued Collaborative Care management.
• 99494 — an add-on used with 99492 or 99493 for each additional increment of time beyond the base code's threshold.

Medicare also recognizes G2214, an add-on for a smaller increment of Collaborative Care time in a month. Because these codes are time-based, CoCM practices track minutes per patient in the registry so they can bill the right code and support it in the record.

General BHI is simpler: one code (99484) for the month once the roughly 20-minute threshold is met.

When does a practice use one versus the other?

The choice usually comes down to team structure and the intensity of care a patient needs.

A practice tends to use Collaborative Care when it can staff — or partner to add — a behavioral health care manager and a psychiatric consultant, and wants a systematic, measurement-based program with registry tracking. CoCM has the deepest evidence base and is designed for treat-to-target management of conditions like depression and anxiety.

A practice tends to use General BHI (99484) when the integration is real but less formal: there's clinical staff supporting behavioral health care and a provider directing it, but not the full CoCM team, registry, or caseload-review workflow. It can also fit patients whose needs are lighter, or serve as an entry point before a practice stands up full Collaborative Care.

The two aren't billed for the same patient in the same month — a practice picks the service that matches how that patient is being managed.

What are the documentation and time basics?

At a high level, both services require consent, a documented behavioral health condition, a care plan, and time captured in the record:

• 99484 (General BHI): roughly 20 minutes of BHI clinical staff time per calendar month, with an initial assessment, a care plan, and ongoing monitoring documented.
• CoCM (99492 / 99493 / 99494): time thresholds per month tracked in a registry, plus evidence of care manager activity and regular psychiatric consultant review.

Coding rules, time thresholds, and coverage details are set by payers and change over time, so practices confirm current requirements with Medicare and their other plans before billing. (Federally qualified health centers and rural health clinics bill some of these services differently.)

Frequently asked questions

Is BHI the same as Collaborative Care?

Not exactly. Behavioral Health Integration is the umbrella term for treating mental health inside primary care. Collaborative Care (CoCM) is one specific, team-based model under that umbrella. "General BHI," billed with CPT 99484, is a separate, more flexible option.

Is CPT 99484 a Medicare code?

Yes. 99484 is a Medicare-recognized code for General Behavioral Health Integration, and CoCM's 99492, 99493, and 99494 are Medicare-recognized as well. Coverage under other payers varies, so confirm with the specific plan.

Does 99484 require a psychiatric consultant?

No. That is a key difference from Collaborative Care. General BHI is directed by the treating provider and delivered by clinical staff, without the mandatory psychiatric consultant or patient registry that CoCM requires.

How much time does 99484 need?

Generally at least 20 minutes of behavioral health integration clinical staff time in a calendar month, spent on assessment, care planning, and monitoring. The exact requirement is set by Medicare, so verify the current rule before billing.

Can a practice bill 99484 and CoCM for the same patient?

Not in the same month. A practice reports the service that reflects how the patient is being managed — either General BHI or Collaborative Care — not both at once.