Objective: Older veterans are the largest cohort served by the U.S. Department of Veterans Affairs (VA). The aim of this study was to examine mental health service utilization among older veterans recently diagnosed with posttraumatic stress disorder (PTSD), with an interest in sociodemographic and clinical characteristics related to receipt and type of mental health treatment.

Design: VA National administrative data set and pharmacy records.

Setting: VA Healthcare System.

Participants: The sample comprised 96,249 veterans aged 50+ years who received a new diagnosis of PTSD between fiscal years 2008-2011.

Measurements: Demographic/clinical characteristics and treatment variables (receipt of mental health treatment; number of days before first appointment; receipt of psychotherapy, medication, or combination treatment; type of medication; number of psychotherapy visits) were assessed and relations were examined using logistic, negative binomial, and Cox regressions.

Results: The majority of older veterans with newly diagnosed PTSD received at least one follow-up mental health visit. Increasing age was associated with decreased odds of receipt of any type of mental health treatment, and psychiatric comorbidities and greater number of medical appointments were associated with increased odds of treatment. Among veterans who received treatment, increased age was associated with decreased odds of receiving both psychotherapy and pharmacotherapy, decreased number of psychotherapy visits, and increased waiting times.

Conclusion: Among older veterans recently diagnosed with PTSD in the VA healthcare system, older individuals, particularly those over 80 years old, are at risk of not receiving timely and appropriate mental health treatment, indicating targeted outreach to this population could be helpful in improving care.