Adjustment disorder is a maladaptive emotional or behavioral response to an identifiable stressor that appears within three months of the stressor and usually resolves within six months after it ends. In the DSM-5-TR it is classified under trauma- and stressor-related disorders, and in the ICD-10-CM it is coded F43.20 through F43.29, with F43.23 (adjustment disorder with mixed anxiety and depressed mood) being the most common presentation.

In our fast-paced world, it’s not uncommon for people to grapple with stress and navigate the twists and turns of life’s unpredictable changes. However, there’s a point where these challenges can evolve into something more enduring and overwhelming. This is where Adjustment Disorder comes into play, a condition characterized by significant distress that persists for more than just a fleeting moment after a stressful event. This prolonged reaction to stress can disrupt the rhythm of our daily lives, making it difficult to concentrate on tasks like studying or working, and even dampening our overall enjoyment of life.

For clinicians working with stress-related conditions like this, tools such as Mentalyc’s AI Note Taker can help ensure that important symptom patterns and client language are accurately captured during sessions without adding extra documentation burden.

Most resources cover only one side of adjustment disorder: code-lookup sites list the F43.2x codes without the clinical reasoning, and clinical references explain the DSM-5 criteria without the billing detail. This guide brings both together in one place, so you can move from recognizing the presentation, to selecting the correct ICD-10 code, to documenting it defensibly, without leaving the page. Below you will find the complete F43.2x code family, the full DSM-5-TR criteria, a practical walkthrough for choosing the right specifier, and the differential-diagnosis cues that separate adjustment disorder from major depression, generalized anxiety, and PTSD.

What is an adjustment disorder?

Adjustment Disorder, often referred to as situational depression, represents an exaggerated response to life’s stressors. This response goes beyond the typical reactions one might expect and can result in significant disruptions in social, occupational, or academic aspects of life.

The DSM-5-TR explains that symptoms typically appear within three months of the event and usually last no longer than six months after it has ended. The stressors that trigger an adjustment disorder can take various forms, from a single, isolated event such as losing a job, to a series of interconnected problems like financial troubles leading to romantic setbacks. Even common life milestones, like becoming a parent, can become stressors aggravating this condition.

What is the ICD-10 code for adjustment disorder?

Adjustment disorder is coded within the ICD-10-CM family F43.2x. The specific code depends on which symptoms predominate:

• F43.20 Adjustment Disorder, Unspecified: When the specific stressor or symptoms are not specified.
• F43.21 Adjustment Disorder With Depressed Mood: When your client exhibits symptoms of depression, such as sadness, helplessness, hopelessness, low self-esteem, and worthlessness in response to a stressful life event.
• F43.22 Adjustment Disorder With Anxiety: Your client is experiencing excessive anxiety, including worry, restlessness, and panic attacks due to a stressful life event.
• F43.23 Adjustment Disorder With Mixed Anxiety and Depressed Mood: When your client experiences symptoms of depression and anxiety as a response to a stressful life event, use this code.
• F43.24 Adjustment Disorder With Disturbance of Conduct: This code pertains to situations where a person shows symptoms such as defiant behavior, aggression, and destruction of property as primary indicators.
• F43.25 Adjustment Disorder With Mixed Disturbance of Emotions and Conduct: When emotional distress and defiant behavior symptoms are present.
• F43.29 Adjustment Disorder With Other Symptoms: For adjustment-disorder reactions that do not fit the subtypes above.

These are billable, specific ICD-10-CM codes used for reimbursement, current in the 2026 ICD-10-CM edition (effective October 1, 2025). They sit within the broader F43 chapter (reaction to severe stress and adjustment disorders), alongside F43.0 (acute stress reaction) and F43.1 (PTSD).

For the conduct-and-emotions subtype, see our full guide on adjustment disorder with mixed disturbance of emotions and conduct (F43.25).

What is F43.23?

F43.23 stands for adjustment disorder with mixed anxiety and depressed mood. Research indicates that adjustment disorder with mixed anxiety and depressed mood is the most common presentation of adjustment disorder. If you diagnose F43.23, that means the person is having some maladaptive ways of coping in response to a specific stressor that is also causing depression and anxiety.

What are the DSM-5 criteria for adjustment disorder?

According to the DSM-5, the criteria for adjustment disorder are as follows:

Criterion A The emergence of emotional or behavioral symptoms in reaction to identifiable stressors, all occurring within a span of three months from the onset of these stressors.

Criterion B These symptoms or behaviors exhibit clinical significance, as demonstrated by one or both of the following criteria: notable distress that is out of proportion in relation to the stressor; significant impairment in one’s social, professional, or other essential areas of life functioning.

Criterion C The stress-related disturbance does not align with the diagnostic criteria of any other mental disorder and is not merely an exacerbation of an existing mental disorder.

Criterion D The symptoms do not reflect normal grieving.

Criterion E Once the stressor or its repercussions have subsided, the symptoms do not persist for more than six months.

How do I choose the right code?

When choosing the correct ICD-10 code, focus on the individual’s primary symptoms and presentation. It’s vital to evaluate whether anxiety, depression, or both are the most prominent in hindering the person’s ability to cope or function normally. You can ask yourself the following questions: Is the person mainly worried, restless, or irritable (anxiety)? Do they seem sad, hopeless, or pessimistic (depression)? Are symptoms of both anxiety and depression significantly interfering in their life?

It’s also important to consider the condition’s severity, which can be classified as mild, moderate, or severe, depending on the level of distress and functional impairment, and its duration: if it lasts less than six months it is acute, and if symptoms have been present for six months or longer it is chronic.

When you bill adjustment disorder, ensure the client doesn’t meet a diagnosis for another mental health disorder; if their symptoms persist for more than six months, another diagnosis may be applicable; if the client is experiencing grief, this doesn’t qualify for adjustment disorder; and if the client is having a nonpathological normal reaction to stress, this doesn’t qualify for adjustment disorder.

In practice, the choice between codes comes down to two questions in sequence. First, is the reaction clearly tied to an identifiable stressor and below the threshold for a standalone disorder? If the depressive or anxious symptoms meet full criteria for major depressive disorder or generalized anxiety disorder, code those instead, not an adjustment disorder. Second, once adjustment disorder fits, which feature predominates: depressed mood (F43.21), anxiety (F43.22), both roughly equally (F43.23), conduct disturbance (F43.24), emotions and conduct together (F43.25), or a presentation that fits none of these cleanly (F43.20 unspecified, or F43.29 with other symptoms)? Working through it in that order keeps the diagnosis defensible in an audit and prevents the most common errors: over-coding a normal stress reaction, or under-coding a presentation that has actually crossed into a full mood or anxiety disorder.

What are the symptoms of adjustment disorder?

Adjustment disorder may present with the following symptoms: low mood, anxiety, irritability, difficulty focusing or concentration, lack of motivation, interpersonal difficulties, work difficulties, and school or academic challenges. These symptoms often occur due to the stressor the individual is experiencing. Treatment should be targeted towards an individual’s specific symptoms.

Other physical and behavioral manifestations can include persistent fatigue coupled with insomnia, bodily discomfort and a perception of illness, frequent headaches or abdominal pain, palpitations, frequent bouts of crying, withdrawal from social interactions, altered eating patterns, and, in some cases, substance abuse or suicidal thoughts.

What causes adjustment disorder?

Adjustment disorders can stem from situations perceived as stress-inducing and disruptive to one’s occupational, social, or domestic life. Examples include the loss of a family member or a close friend; relationship complications, such as breakups, marital discord, or divorce; significant life events like marriage or the birth of a child; severe health challenges; academic difficulties; financial hardships; workplace-related issues, including job loss or unattained goals; residing in a neighborhood marked by high crime rates; retirement; and experiencing a disaster or unforeseen catastrophe.

Furthermore, individual factors, such as one’s personality, temperament, past life experiences, and family history, are believed to exert some kind of influence contributing to the development of adjustment disorder.

How prevalent is adjustment disorder?

Adjustment disorder is estimated to impact approximately 2 to 8% of the overall population, potentially affecting individuals across all age groups. Interestingly, it displays a higher occurrence among females, affecting twice as many women as men. In clinical and outpatient psychiatric samples it is seen far more frequently, and among psychiatric disorders research suggests that adjustment disorder ranked 7th among all psychiatric conditions.

A brief history of adjustment disorder

Adjustment disorder was first recognized in the DSM-I in 1952 as a “transient situational personality disorder” despite it not being a personality disorder. It evolved into “transient situational disturbances” in the DSM-II before it was officially recognized as adjustment disorder in the DSM-III in 1980. When the DSM-V was released, the most significant change was the movement of the disorder to the trauma and stressor-related disorders section.

Disorders similar to adjustment disorder

According to the Diagnostic and Statistical Manual of Mental Health Disorders, other disorders should be ruled out before making a diagnosis of adjustment disorder. Research indicates that differential diagnoses to consider include bereavement, post-traumatic stress disorder (PTSD), major depressive disorder (MDD), acute stress reaction, normal reactions to stress, personality disorders, and anxiety disorders. When an individual has an adjustment disorder, they can experience anxiety and depression, but these are often below the threshold for meeting the criteria for an anxiety or depressive disorder.

How is adjustment disorder treated?

The management of an adjustment disorder may not always necessitate specific clinical intervention. With the support of family, friends, or a counselor, symptoms can naturally improve over a few months. When symptoms are significantly distressing or impairing, psychotherapy is the first-line treatment. Cognitive Behavioral Therapy (CBT), typically delivered in weekly sessions over about 8 to 12 weeks, helps clients identify and challenge the stressor-related thoughts contributing to their distress and build adaptive coping skills. Other options include Solution-Focused Therapy to set small, achievable goals, Interpersonal Therapy to address relational disruptions linked to the stressor, and Family Therapy when family dynamics contribute to the distress. Typically, physicians do not prescribe medications to treat adjustment disorders in children or adults; however, short-term pharmacologic support may be considered for moderate to severe symptoms, prescribed by a licensed practitioner.

The prognosis for adjustment disorder is generally good. Most people recover within three to six months as they adapt to the stressor or after the stressor is removed, and timely treatment can speed recovery and ease day-to-day functioning.

When documenting these plans, some therapists rely on an AI Treatment Planner to align DSM-5 criteria with measurable goals and interventions from the very first intake session, and an AI Progress Tracker can help clinicians observe whether symptoms are resolving as the client adapts, or whether they are persisting beyond the expected adjustment window.

Can adjustment disorders be prevented?

While we may not have direct control over external circumstances, there exist proactive measures to enhance our ability to cope when confronted with stressors. Encourage your clients to foster connections with family, friends, and community groups, and to prioritize self-care, whether it’s indulging in a soothing bath, immersing themselves in a good book, maintaining a journal, strolling in nature, or spending quality moments with a pet.

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References

1. American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR).

2. Yaseen, Y. (2017). Adjustment disorder: Prevalence, sociodemographic risk factors, and subtypes in an outpatient psychiatric clinic. https://www.sciencedirect.com/science/article/abs/pii/S1876201816305913

3. Maercker, A., et al. (2017). Adjustment Disorder Diagnosis: Improving Clinical Utility. https://www.tandfonline.com/doi/full/10.1080/15622975.2018.1449967

4. Hirsch, J.A., et al. (2016). ICD-10 History and Context. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7960170/

5. Substance Abuse and Mental Health Services Administration. (2016). Impact of DSM-IV to DSM-5 changes on the national survey on drug use and health. https://www.ncbi.nlm.nih.gov/books/NBK519704/

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