BACKGROUND: Pregnant women with substance use disorders (SUDs) are at risk for adverse delivery outcomes, and some of these women have psychiatric comorbidities that increase this risk. AIMS: Although comprehensive care models offering prenatal care services and substance abuse treatment have been found to positively affect delivery outcomes for pregnant women with SUDs, there is a dearth of research to support such models for women who have psychiatric comorbidities. METHODS: A secondary data analysis was conducted to understand the relationship between pretreatment psychiatric comorbidity and delivery outcomes for pregnant clients with SUDs receiving comprehensive treatment. We analyzed two groups of pregnant women with SUDs and hypothesized that women with psychiatric comorbidities would have worse neonatal and maternal outcomes compared with those who did not have any pretreatment psychiatric comorbidity. Regression models were used to examine changes in delivery outcome criteria (birthweight, neonatal abstinence syndrome, maternal urine toxicology screens at delivery, and hospital length of stay) in relation to psychiatric comorbidity among a sample of 74 mother-baby dyads receiving comprehensive care treatment. RESULTS: Results did not support our hypothesis as delivery outcomes were statistically similar for both groups. CONCLUSION: Findings suggest comprehensive care can reduce the risk of negative delivery outcomes among women with SUDs who have psychiatric comorbidities. Treatment and research implications are provided.