AC-OK screen for co-occurring disorders: Screening tool template & guide

Key Takeaways

The AC-OK Screen is a validated brief assessment tool for identifying mental health and substance use disorders that occur together (co-occurring disorders) in behavioral health settings.

It requires minimal training to administer, takes less than 10 minutes to complete, and can be scored immediately to guide clinical decisions and treatment planning.

Both adult and adolescent versions exist, and the tool shows excellent reliability (Cronbach’s Alpha ranging from 0.80 to 0.92 across subscales) and sensitivity in screening for dual diagnoses across diverse populations.

Pabau’s digital intake forms and client records help clinicians administer and document the AC-OK Screen securely within a HIPAA-compliant workflow.

Behavioral health clinicians who screen only for mental health symptoms, or only for substance use, can miss a co-occurring diagnosis. The AC-OK Screen checks for both conditions in a single intake step.

In less than 10 minutes, this validated screening tool identifies whether a patient has simultaneous mental health and substance use concerns. It’s designed for practices where every intake must be comprehensive: psychiatry practices, community mental health centers, addiction treatment programs, and integrated behavioral health practices.

This guide walks you through the AC-OK Screen purpose, how to administer it, what scores mean, and why digital intake forms make implementation seamless in modern practices.

What is the AC-OK Screen?

The AC-OK Screen is a brief, validated assessment tool for screening co-occurring mental health and substance use disorders in behavioral health settings. Developed by Andrew Cherry and named after its creator (AC) and state of origin Oklahoma (OK), it has become a standard intake instrument across the United States since its introduction in 2008.

Co-occurring disorders-also called dual diagnoses or comorbid conditions-mean a patient has both a diagnosable mental health condition (depression, anxiety, bipolar disorder, trauma) and a substance use disorder at the same time. The AC-OK Screen detects this overlap quickly, allowing clinicians to structure client records and treatment plans that address both conditions.

Practices already running a full biopsychosocial assessment at intake can add the AC-OK Screen as a focused add-on rather than duplicating existing questions.

Unlike full diagnostic assessments, the AC-OK is a screening tool: it raises a flag for further evaluation, not a diagnostic instrument itself. This distinction matters for regulatory compliance and scope of practice.

According to peer-reviewed validation studies, the AC-OK Screen has excellent reliability, convergent validity, excellent sensitivity, and sufficient specificity-making it highly useful in behavioral health settings where time and resources are limited.

How to administer the AC-OK Screen

Administering the AC-OK Screen requires minimal training-a key strength that’s made it widely adopted. Here are the five core operational steps clinicians follow:

1. Introduce the screening at intake. Present the AC-OK as a standard part of your practice’s initial assessment. Hand the form to the patient or use digital screening forms for faster completion and automatic data capture.
2. Patient completes the self-report items. The AC-OK asks straightforward yes/no and symptom-frequency questions about mental health and substance use. Takes 5-10 minutes. Both adolescent and adult versions are available with age-appropriate language.
3. Clinician scores immediately after completion. Count responses according to the scoring guide. Yields separate subscale scores for mental health and substance use. No complex calculations-just tallying and referencing cutoff thresholds.
4. Interpret and document findings. Scores above cutoff thresholds indicate likely co-occurring disorders. Document the result in the patient’s clinical record with the subscale scores and clinical action taken.
5. Refer or adjust treatment plan based on results. If either subscale indicates co-occurring concern, escalate to a clinician trained in dual-diagnosis treatment or update the existing treatment plan to address both domains.

Practices building a complete intake packet often pair the AC-OK with a broader adult biopsychosocial intake so mental health, substance use, and psychosocial history are captured together.

Integration with AI-powered clinical documentation means scores and clinical actions can auto-populate into progress notes, reducing manual data entry and improving consistency.

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Who is the AC-OK Screen helpful for?

The AC-OK Screen is designed for any behavioral health professional evaluating patients in settings where co-occurring disorders are common or where comprehensive intake assessment is mandated:

• Psychiatry practices integrating substance use screening into mental health intake workflows.
• Community mental health centers serving diverse populations where complex presentations are the norm.
• Substance abuse and addiction treatment programs screening for concurrent mental health disorders requiring simultaneous treatment.
• Integrated behavioral health practices offering unified mental health and substance abuse treatment under one roof.
• Trauma-informed practices assessing whether trauma presentations include substance use as a coping mechanism, often alongside a trauma timeline worksheet.
• Adolescent mental health and school-based practices using the adolescent AC-OK version to identify dual diagnoses in younger populations (ages 12-17).

The tool has been validated in English-speaking adult and adolescent populations and in international studies with Latino immigrant communities, making it applicable across diverse clinical settings.

Practices already using other behavioral health templates, such as an eating disorder worksheet or an internet addiction test, can add the AC-OK Screen to build a fuller picture of co-occurring risk factors at intake.

Benefits of using the AC-OK Screen

Early identification prevents missed diagnoses. Patients with untreated co-occurring disorders have worse outcomes. Screening from intake ensures both conditions get clinical attention and appropriate referral.

Minimal training and time burden. Clinicians do not need extensive certification to administer the AC-OK. Takes under 10 minutes, making it practical for busy intake workflows.

Validated and reliable across populations. Peer-reviewed studies confirm the AC-OK has excellent reliability, sensitivity, and specificity. It’s accepted by accreditors and payers as a psychometrically sound tool, similar to established screeners like the PHQ-9 and GAD-7.

Supports treatment planning accuracy. Knowing upfront whether co-occurring disorders exist helps clinicians select appropriate level of care and evidence-based treatment protocols, reducing trial-and-error and improving patient outcomes.

HIPAA-compliant documentation. When administered via secure digital screening forms and encrypted client records, the AC-OK Screen supports regulatory compliance without adding manual paperwork burden, especially when paired with a standard HIPAA authorization form.

Scoring and clinical interpretation

The AC-OK Screen yields two subscales: mental health disorders and substance use disorders. Each subscale has a cutoff threshold.

Mental health subscale includes items on depressed mood, anxiety symptoms, paranoid thinking, emotional dysregulation, and trauma exposure. Higher scores indicate greater likelihood of co-occurring mental health disorder.

Substance use subscale covers alcohol use frequency, drug use patterns, negative consequences of use, and dependence symptoms. Elevated scores suggest substance use disorder screening positive-a clinical alert requiring follow-up evaluation.

Scoring is tallying-based, with clear reference cutoffs provided in the AC-OK template. This design keeps automated screening workflows simple and reduces documentation time during intake.

When the mental health subscale flags a concern, many clinicians follow up with a full mental status exam before finalizing a diagnosis.

Adult vs adolescent versions and special populations

The AC-OK Screen exists in two versions: adult (ages 18+) and adolescent (ages 12-17). The differences are language complexity and developmental relevance. Adolescent items address peer substance use, school-based stress, and age-appropriate trauma; adult items reflect work, family, and adult-onset conditions.

Adolescent-specific considerations: Informed consent and parental notification rules vary by jurisdiction and setting. Ensure your secure patient portal supports age-appropriate access and parental consent workflows before implementing adolescent screening, ideally alongside a dedicated adolescent intake questionnaire.

Validation in diverse populations: Peer-reviewed studies validate the AC-OK in English-speaking populations and in Latino immigrant cohorts. Spanish-language validity data are limited; if your practice serves primarily Spanish-speaking patients, verify cultural and linguistic equivalence before exclusive reliance on the English version.

Start screening for co-occurring disorders today

Undetected co-occurring disorders derail treatment and waste clinical resources. The AC-OK Screen offers a quick, validated, easy-to-score assessment that every intake clinician can master in minutes. Both adult and adolescent versions are ready to use, and integration with Pabau’s digital forms and client records keeps screening fast and compliant.

Download the template today and implement universal screening at your next intake appointment. See how Pabau helps behavioral health practices administer and document screening tools securely and efficiently.

Continue your research

Looking for a tool that integrates mental health and substance abuse assessment into one workflow? Mental health practice management software with integrated digital screening forms streamlines how clinicians administer validated assessment tools like the AC-OK Screen.

Need guidance on setting up compliant intake workflows? Medical forms and digital documentation best practices walk through how to design intake sequences that catch dual diagnoses without adding clinician burden.

Want to ensure your team documents co-occurring findings correctly? Psychiatric evaluation template guidance shows how to document mental health and substance use findings together in clinical notes that support treatment planning and payer documentation.

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