Behavioral Health RTM Billing: Complete Guide

What Is Behavioral Health RTM and Why It Exists

Remote Therapeutic Monitoring (RTM) was introduced by CMS in the 2022 Medicare Physician Fee Schedule Final Rule to address a gap in reimbursement for between-visit patient monitoring that does not require physiologic device data. Prior to RTM, Remote Patient Monitoring (RPM) under CPT 99453–99457 required physiologic measurement devices (blood pressure cuffs, glucometers, pulse oximeters) and could not be applied to behavioral health conditions where the clinically relevant data is self-reported: mood ratings, sleep quality, medication adherence, craving intensity.

RTM fills that gap. CPT 98978 specifically covers behavioral health RTM, capturing clinical staff time spent monitoring patient-submitted behavioral health data over a 30-day period. The code was designed to reimburse the monitoring infrastructure that behavioral health practices were already providing informally — check-in calls, digital questionnaires, app-based symptom tracking — but that had no associated billing code.

The clinical rationale for RTM in behavioral health is well-established: patients with depression, anxiety, bipolar disorder, PTSD, schizophrenia, and substance use disorders experience significant symptom fluctuation between clinical visits. Monthly or less frequent office visits are the standard of care in most outpatient behavioral health settings — a cadence that leaves substantial clinical monitoring blind spots. RTM closes those blind spots systematically.

For behavioral health programs — community mental health centers, intensive outpatient programs (IOPs), partial hospitalization programs (PHPs) transitioning patients to lower levels of care, and integrated behavioral health practices — RTM represents both a revenue opportunity and a clinical quality improvement tool. Programs that implement RTM consistently report catching decompensations earlier, reducing emergency department utilization, and improving medication adherence.

Who Qualifies to Bill CPT 98978

Provider eligibility for CPT 98978 billing is more nuanced than for most clinical codes and is a source of confusion and billing errors. The starting framework comes from CMS guidance, but commercial payer policies add additional conditions and restrictions that vary significantly.

Under commercial payer rules: Coverage varies dramatically. Aetna behavioral health plans have published RTM coverage policies for psychiatry and psychology as of 2024. United Healthcare covers RTM under behavioral health benefits for psychiatrists and psychologists. BCBS plans vary by region — some BCBS affiliates have specific RTM policies; others default to the CMS framework. Cigna has been among the slower large commercial payers to adopt RTM for behavioral health.

Qualifying diagnoses: Any ICD-10 behavioral health diagnosis (F-codes) supports RTM billing when the monitored data relates to that condition. Common qualifying diagnoses: F32.x (MDD), F33.x (recurrent MDD), F31.x (bipolar disorder), F41.x (anxiety disorders), F43.x (trauma-related disorders), F20.x (schizophrenia), F10–F19 (substance use disorders).

The 16-Day Threshold: The Make-or-Break Operational Requirement

The 16-day data submission threshold is the single most operationally critical requirement for behavioral health RTM billing. Within each 30-day service period, the patient must submit behavioral health data on at least 16 separate calendar days for CPT 98978 to be billable. Days with no patient-submitted data do not count toward the threshold, and the threshold cannot be met by provider-entered data (the data must come from the patient).

This requirement directly links patient engagement to practice revenue. A patient who submits data on only 12 days in a month generates zero RTM revenue for that month, regardless of how much clinical staff time was spent reviewing available data. This creates a strong operational incentive to design RTM programs with high daily engagement rates.

Factors that predict 16-day threshold achievement:

Daily push notifications: RTM platforms with daily push notification systems achieve patient engagement rates of 70–85% of days in the monitoring period, well above the 16-day threshold (53% of days). Platforms without active notification systems see engagement rates of 40–60% — dangerously close to the threshold, with significant billing risk.

Notification timing: Evening notifications (6:00–8:00 PM) have the highest response rates for most behavioral health populations. Morning notifications work better for early-morning routines but miss patients who silence phones overnight.

Check-in duration: Shorter daily check-ins (3–5 questions, <2 minutes) have dramatically higher completion rates than longer assessments. Reserve full validated scales (PHQ-9, GAD-7) for bi-weekly administration; use brief daily mood/sleep/medication items to maintain the engagement streak.

Gamification: Streak counters, engagement badges, and milestone recognition features in RTM apps increase daily engagement by 18–25% compared to apps with no engagement reinforcement.

Recovery protocols: When a patient misses 3+ consecutive days of check-ins, the platform should trigger a care coordinator outreach — both for clinical reasons and to attempt to recover the engagement trajectory before the threshold becomes unachievable for that month.

CPT Code Set: 98975, 98978, 98980 and Billing Mechanics

Behavioral health RTM uses a three-code structure, each covering a distinct component of the monitoring service:

Billing timing: RTM codes are not point-of-service codes. Claims are submitted at the end of each 30-day monitoring period, after confirming the 16-day threshold has been met. This creates a billing cycle lag — new enrollees generate their first RTM revenue 30–45 days after enrollment, with Medicare payment following in 14–30 days after claim submission.

Documentation Requirements for Clean Claims

RTM claim documentation must satisfy both the technical billing requirements and the clinical documentation standards that support medical necessity. Claims submitted without adequate documentation are the most common source of RTM denials and post-payment audits.

Required documentation elements for each 30-day RTM billing period:

1. Device identification: Document the specific RTM platform used, including its FDA registration status (Class II medical device registration or FDA-cleared digital therapeutic). Maintain this on file for audits; the specific device name and FDA registration number must be available for any payer request.

2. Patient engagement confirmation: Document that the patient submitted data on at least 16 separate days in the billing period. Most RTM platforms generate an automated engagement report that can be attached to the patient record or summarized in the clinical note.

3. Provider review note: A dated clinical note signed by the supervising provider (MD, DO, NP, PA, or PhD psychologist depending on payer) documenting: (a) review of the patient's RTM data for the period, (b) clinical interpretation of trends or notable data points, (c) any clinical actions taken in response to RTM data, and (d) the ongoing monitoring plan. This note does not need to be lengthy — 150–200 words covering all four elements is sufficient.

4. Time documentation: Clinical staff must document the time spent on RTM activities during the billing period. This can be logged in the RTM platform (which may capture this automatically) or in a practice time-tracking system. Time logs must support at least 20 minutes for 98978 and document the additional time for any 98980 units billed.

5. Consent documentation: Most payers require written patient consent for RTM enrollment. This consent must be documented in the record and renewed when a patient is re-enrolled after a gap.

Payer Coverage Landscape: Medicare, Commercial, and Medicaid

Medicare covers behavioral health RTM (CPT 98978) under the Physician Fee Schedule when billed by eligible providers for Medicare beneficiaries with behavioral health diagnoses. Medicare Advantage plans are required to cover RTM codes if the underlying Medicare program covers them, though some plans have additional prior authorization requirements.

Commercial payers as of 2025: - Aetna: Behavioral health RTM covered under commercial behavioral health benefit; requires credentialed behavioral health provider and ICD-10 F-code diagnosis - United Healthcare: RTM covered for psychiatrists and licensed psychologists under most commercial plans; some plans require auth - BCBS: Highly variable by region; BCBS of Michigan, Texas, and Illinois have published RTM coverage policies; other BCBS affiliates are still developing coverage determinations - Cigna: Limited commercial RTM coverage as of mid-2025; behavioral health RTM coverage expanding but not universal - Humana: Medicare Advantage plans cover RTM; commercial behavioral health coverage varies

Medicaid: State-by-state coverage with significant variation. States with confirmed behavioral health RTM Medicaid coverage as of 2025 include California (Medi-Cal), Ohio (Ohio Medicaid), Pennsylvania (PA Medicaid), and Michigan (Healthy Michigan). States actively evaluating coverage include Texas, Florida, and New York. Practices should check with their state Medicaid agency or managed care organization (MCO) contracts for current coverage status.

Prior authorization: RTM generally does not require prior authorization under Medicare. Commercial payers that require auth typically need: (1) a behavioral health diagnosis, (2) a treatment plan documenting the clinical need for between-visit monitoring, and (3) confirmation that an FDA-registered device is being used. Practices in states with strong commercial RTM adoption report auth approval rates above 90% when documentation is complete.

Revenue Projections and Program ROI

The ROI of a behavioral health RTM program can be calculated with a straightforward model once the practice has established its payer mix and expected enrollment rate:

Step 1: Estimate eligible patients. Count patients with qualifying behavioral health diagnoses seen in the past 12 months who have access to a smartphone or tablet. In most outpatient behavioral health practices, 60–75% of active patients meet these basic criteria.

Step 2: Estimate enrollment rate. Practices with active enrollment processes (staff offering RTM at every intake) achieve enrollment rates of 50–70% of eligible patients. Passive programs (offering only when asked) achieve 15–30%.

Step 3: Estimate threshold compliance rate. Well-run programs with daily notifications achieve 75–85% monthly threshold compliance (percentage of enrolled patients who meet the 16-day threshold each month).

At 150 enrolled patients, net annual margin climbs to $80,000+, demonstrating the significant scale effects in RTM program economics. The fixed cost of the platform and coordinator is amortized across a larger patient base while incremental revenue grows proportionally.