F43.23: 2025 ICD-10-CM Diagnosis Code for Adjustment Disorder

In the US healthcare system, F43.23 is a specific code used for billing within the ICD-10-CM system (effective October 2023). This code signifies a diagnosis of Adjustment Disorder with Mixed Anxiety and Depressed Mood. Remember, international versions of ICD-10 may use different codes for this diagnosis.

What does the ICD 10 Code F43.23 stand for?

The ICD 10 Code F43.23 stands for adjustment disorder with mixed anxiety and depressed mood. Adjustment disorders occur when someone has an identifiable maladaptive response to an identifiable stressor. With adjustment disorder, a person has to have a behavioral or emotional response to a stressor within three months of it occurring.

The code F43.23 specifies that this is an adjustment disorder with mixed anxiety and depressed mood. 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.

Criteria for adjustment disorder

Adjustment disorder occurs when someone has difficulty adjusting after a stressor has occurred. According to the DSM-V, the criteria for adjustment disorder are as follows:

Distress occurring after the stressor that’s out of proportion to the intensity of the stressor
Troubles in occupational, social, or other areas of functioning

The troubles the person is experiencing can’t meet the criteria for another mental health disorder. There’s also a note in the DSM-V about considering cultural context regarding the stressor and subsequent symptoms.

When diagnosing F43.23, it’s important to note that the symptoms of the disorder can’t be symptoms of normal grief. Grief disorders might be applicable in this situation, but not adjustment disorders. Adjustment disorders are classified under trauma and stressor-related disorders in the DSM-V.

Adjustment disorder may present with the following symptoms:

Low mood
Anxiety
Irritability
Difficulty focusing or concentration
Lack of motivation
Interpersonal difficulties
Work difficulties
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.

What’s the prevalence rate of adjustment disorder?

Adjustment disorder is estimated to have a prevalence rate of 11.5%. Research indicates that adjustment disorder with mixed anxiety and depressed mood is the most common presentation of adjustment disorder.

Among psychiatric disorders research suggests that adjustment disorder ranked 7th among all psychiatric conditions. The high ranking indicates the need for clinicians to be well-versed in adjustment disorder and its presentation in clients.

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.

Additionally, the subtypes of adjustment disorder were introduced in the DSM-IV. When the DSM-V was released, there were no major updates to the criteria or specifiers of adjustment disorder. The most significant change in the DSM-V was the movement of the disorder to the trauma and stressor-related disorders section.

Adjustment Disorder Specifiers

If you work with clients with adjustment disorders, six specifiers can help explain the diagnosis of adjustment disorder.

The six specifiers for adjustment disorder are:

F43.21: With depressed mood: This specifier is characterized by low mood, hopelessness, and periods of tearfulness.
F43.22: With anxiety: This specifier is characterized by periods of worry, nervousness, jitteriness, or separation anxiety.
F43.23:With mixed anxiety and depressed mood: This specifier is characterized by predominance of anxiety and depressed mood.
F43.24: With disturbance of conduct: This specifier is characterized by a conduct disturbance.
F43.25: With mixed disturbance of emotions and conduct: This specifier is characterized by both conduct disturbance and emotional symptoms such as depression and anxiety.
F43.20: Unspecified: This specifier does not fall into the other categories but encompasses all maladaptive reactions to adjustment disorder that don’t fit the above specifier.

When you are choosing a specifier for adjustment disorder, it’s important to note if your client has emotional symptoms consistent with an anxiety or mood disorder. If they do, this should clue you into adjustment disorder being an incorrect diagnosis. There are many similar disorders to adjustment disorders.

Disorders similar to adjustment disorder

According to the Diagnostic and Statistical Manual of Mental Health Disorder, other disorders should be ruled out before making a diagnosis of adjustment disorder. Research indicates that differential diagnoses to consider before diagnosing adjustment disorder include:

Bereavement
Post-traumatic stress disorder (PTSD)
Major depressive disorder (MDD)
Acute stress reaction
Normal reactions to stress
Personality disorders
Anxiety disorders

When an individual has an adjustment disorder, they can experience anxiety and depression. Still, these are often below the threshold for meeting the criteria for meeting an anxiety or depressive disorder.

Examples of stressors associated with adjustment disorder

When billing adjustment disorder, here are some everyday stressors related to the diagnosis:

Conflict at home
Conflict at work
Divorce
Illness
Disability
Medical concern
Financial difficulties

While this list isn’t all-encompassing, research suggests that an adjustment disorder diagnosis can be a single event or a combination of many stressful life events.

Tips to remember when billing adjustment disorder F43.23

When you bill F43.23 there, here are some tips to keep in mind:

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
If the client is having a nonpathological normal reaction to stress, this doesn’t qualify for adjustment disorder

Remember, the ICD codes help guide your treatment planning for the client. Diagnosing your clients accurately helps provide better care. F43.23 encompasses both anxiety and depression in response to the stressor your client is experiencing.

How to create a treatment plan for adjustment disorder

You can create well-written treatment plans. The treatment plan for adjustment disorder should be centered around reducing symptoms and helping your clients adjust and cope with the stressor they are experiencing.

If you need help writing treatment plans, consider trying Mentalyc for free. Mentalyc is an AI that can help write your progress and treatment plans. Using Mentalyc is HIPAA-compliant and saves you time on your administrative work.

The Bottom Line of F43.23

Adjustment disorder is a mental health diagnosis characterized by difficulties adjusting after a stressor. The stressor can’t be a part of normal grief. ICD 10 code F43.23 is a diagnosis code for Adjustment disorder with anxiety and depressed mood, the most common presentation of adjustment disorder.

If you treat clients with adjustment disorder, it’s essential to keep in mind that anxiety and depression may include reactions to stress. If anxiety and depression are long-term and intense, your client might instead meet the criteria for anxiety disorders or depressive disorders.

Using the correct ICD-10 code helps you develop a successful treatment plan for your clients and code diagnoses properly. Many tools can help you write treatment plans for F43.23. Mentalyc is one tool you can use to help you write treatment plans and notes, though many other tools can help.

References:

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?via%3Dihub

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

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

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/table/ch3.t19/