Inclusion Criteria:  The investigators designed the sample to be representative of Veterans with PTSD who are treated in PTSD Clinical Teams (PCTs), with minimal exclusion criteria. PCT clinicians will provide care for those with exclusionary comorbidities or preference for a medication-based approach, as per standard policies and procedures. Inclusion criteria are:  score of 33 or above on the PCL-5 at least 8 weeks on a stable dose for individuals who are taking psychotropic medication over the age of 18  Exclusion Criteria:  active suicidality (assessed by the Columbia Suicide Severity Rating Scale with scores indicating elevated acute risk for suicide warranting hospitalization or intensive treatment) - need for detoxification severe cognitive impairment that, in the judgment of the investigator, makes it unlikely that the patient can provide informed consent or adhere to the study regimen (as evidenced by confusion, inability to track discussion or answer questions, or other clear and significant indicators of cognitive impairment) psychosis or unmanaged bipolar disorder previous receipt of CPT in the past year current engagement in trauma-focused psychotherapy (Prolonged Exposure or Cognitive Processing Therapy)