Financial and Staffing Outcomes of Unbillable CoCM Care Manager Time in FQHCs

What the evidence says

Care manager time in Collaborative Care Model (CoCM) billing splits into billable and unbillable minutes according to billing-code time thresholds, and that split differs by clinic type and by which billing scenario applies. Under an expansive billing scenario, non-FQHCs billed 61% of care manager minutes versus 50% for FQHCs, an 11 percentage point gap; under a restrictive scenario the non-FQHC share fell to 54% while the FQHC share stayed at 50% (FQHC billable share was identical across both scenarios). Despite FQHCs using higher-reimbursement billing codes per minute, this higher non-FQHC billable share produced comparable reimbursement per hour only in the expansive scenario ($91.46 non-FQHC vs. $91.83 FQHC); in the restrictive scenario non-FQHC reimbursement per hour dropped to $79.32 while the FQHC figure held at $91.83.

Unbillable time itself breaks into two components. Time spent before a patient was engaged in CoCM accounted for 13,409 of 90,996 total care manager minutes, or 15% of all documented minutes. Among the minutes ruled ineligible for billing, time exceeding the maximum allowable minutes per code was far more common than time falling below the minimum: 16,527 minutes (18% of total minutes) were spent above code maximums, a ratio of 3.2 minutes over the maximum for every one minute under the minimum.

Reimbursement per hour also varies with payer rate, and that variation is wider than the gap between billing scenarios. Under Medicare-based rates, reimbursement per hour ranged $79.32 to $91.83 across the restrictive and expansive scenarios. Under Medicaid rates, the range widened considerably: as low as $38.43 per hour at Pennsylvania's minimum Medicaid rate (among non-FQHCs) and as high as $115.71 per hour at Montana's maximum Medicaid rate (among FQHCs).

Where the sample included patients with opioid use disorder co-occurring with a mental disorder, the share of care manager time exceeding billing-code maximums was higher than in a comparison population with mental disorders alone: 18% of minutes exceeded the maximum in the OUD-co-occurring sample, versus 1-13% reported for CoCM with mental disorders in the comparison study.

No claim in this set measures staffing outcomes directly — turnover, caseload, hiring, or retention of care managers are not addressed; the evidence here is limited to billable/unbillable time shares and dollar reimbursement per hour.

Where the evidence splits

No contradictions in the current sources.

Thresholds and dose-response

Reimbursement per hour changes with the billing scenario applied to non-FQHCs: $91.46/hour under the expansive scenario, falling to $79.32/hour under the restrictive scenario, while the FQHC rate stays fixed at $91.83/hour in both scenarios — so comparable non-FQHC/FQHC hourly reimbursement holds only under the expansive scenario. Reimbursement per hour also changes with payer and state Medicaid rate: it ranges $79.32-$91.83/hour under Medicare rates but $38.43-$115.71/hour under Medicaid rates, with the low end set by Pennsylvania's minimum Medicaid rate and the high end by Montana's maximum Medicaid rate.

Open empirical questions

• Whether documented billing-code eligibility rules match what clinics actually bill and get reimbursed for in practice, in FQHC and non-FQHC settings.
• Whether unbillable pre-engagement time is necessary for later clinical outcomes or represents avoidable inefficiency.
• What Medicaid reimbursement rates and payer mix actually apply to each clinic's patient population, versus the modeled state minimum/maximum range.
• Whether the OUD-co-occurring sample and the mental-disorder-only comparison sample are clinically equivalent populations measured with comparable time-documentation methods.