A provider has been determined to be a high-cost provider after a total claims cost analysis. The provider’s patient panel has an overall low HCC…

The scenario presents a mismatch: the provider's actual costs are high, but the predicted costs, based on the patient panel's average HCC score, are low. The most probable cause for this discrepancy is incomplete or non-specific diagnostic documentation. If the provider's patients are genuinely complex and high-cost, a low HCC score indicates that the chronic conditions, comorbidities, and disease severity that drive up costs are not being accurately captured and reported in claims data. This failure to document all relevant, risk-adjusting diagnoses leads to an artificially low risk score that does not reflect the panel's true acuity.

A. Caring for patients of a higher acuity would explain the high costs, but if documented correctly, it should result in a high HCC score, not a low one.

C. A less complex patient population would explain a low HCC score but would contradict the finding that the provider is "high-cost."

D. While not reporting unspecified diagnoses is good practice, the core issue is the failure to capture any relevant diagnosis, specified or not, that contributes to risk.

1. Poe, B. (Ed.). (2021). The CCDS-O Exam Study Guide (2nd ed.). ACDIS. Chapter 1, "The Outpatient Environment," pp. 6-7, discusses how risk adjustment scores are used to profile providers and how incomplete documentation can lead to scores that don't reflect patient acuity.

2. Berenson, R. A., & Upadhyay, D. K. (2016). Physician-Focused Payment Models: A Road Map for Performance-Based Payment. Urban Institute Research Report. (Section on "Risk Adjustment" discusses the importance of accurate diagnosis coding for fair performance measurement and payment).

3. Swartz, K. (2017). Risk Adjustment and High-Cost Enrollees. The Milbank Quarterly, 95(1), 27–29. https://doi.org/10.1111/1468-0009.12245 (Discusses how failure to accurately capture health status leads to mis-calibration of risk scores relative to actual costs).