Table 4.
Regression Coefficients for the Mental Disorders Hierarchy (HCCs 31–35) from Models 1 and 4
| Risk Adjustment Model | Service Days n=1,046,803 | Ambulatory Provider Encounters n=1,039,712 | Mental Health/ Substance Abuse (MH/SA) Service Days n=1,046,803 |
|---|---|---|---|
| Independent Variables | Coefficient* | Coefficient | Coefficient |
| Model 1: Standard HCC Model | |||
| HCC 31: Drug/alcohol | 23.02 | 14.99 | 25.44 |
| HCC 32: Psychosis | 15.94 | 9.75 | 16.21 |
| HCC 33: Depression | 5.61 | 4.03 | 3.94 |
| HCC 34: Anxiety | 1.67 | 2.52 | 1.52 |
| HCC 35: Lower cost | 0.57 | 0.60 | −0.15 |
| Model 4: Model 1 + 8 SA Severity Indicators | |||
| HCC 31: Drug/alcohol | 10.81 | 6.47 | 11.95 |
| HCC 31 & alcohol and mild/moderate abuse | 6.24 | 5.22 | 7.96 |
| HCC 31 & drugs and mild/moderate abuse | 22.95 | 10.67 | 24.19 |
| HCC 31 & alcohol and drugs | 14.13 | 11.74 | 15.79 |
| HCC 31 & alcohol, drugs, and mild/moderate abuse | 33.21 | 26.51 | 37.11 |
| HCC 31 & Drugs | 15.79 | 9.52 | 15.96 |
| HCC 32: Psychosis | 13.06 | 2.70 | 12.26 |
| HCC 32 & mild/moderate abuse | 4.20 | 4.43 | 5.48 |
| HCC 33: Depression | 5.83 | 4.13 | 4.08 |
| HCC 33 & mild/moderate abuse | −0.52 (NS) | 0.63 | 0.65 (NS) |
| HCC 34: Anxiety | 1.76 | 2.61 | 1.63 |
| HCC 35: Lower cost | 2.38 | 1.24 | 0.67 |
| HCC 35 & mild/moderate abuse | −2.91 | −0.86 | −1.12 |
Note: Utilization outcomes are defined as in Table 3.
*
All coefficients from SA severity indicators are statistically significant except for those marked NS.