2025 ICD-10-CM code F06.4
(Active) Effective Date: N/A Revision Date: N/A Deletion Date: N/A Mental disorders due to known physiological conditions - Organic anxiety disorder Mental, Behavioral and Neurodevelopmental disorders (F01-F99) Feed
Anxiety disorder due to a known physiological condition; the physiological condition should be coded first.
The medical necessity for coding F06.4 is established when a direct causal link exists between a diagnosed physiological condition and the presence of anxiety symptoms that significantly impact the patient's daily life. This requires comprehensive documentation of both the physiological condition and its impact on the patient's mental health.
The clinical responsibility includes taking a detailed patient history, conducting a thorough physical and neuropsychological examination, ordering and interpreting relevant laboratory tests (e.g., blood tests), establishing a diagnosis based on the patient's symptoms and the identified underlying physiological condition, and developing and implementing a treatment plan. The treatment plan may involve medication management, therapy, and/or supportive care.Regular monitoring of the patient's condition and response to treatment is essential.
- Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- Mental disorders due to known physiological conditions (F01-F09)
In simple words: This code is for anxiety caused by a separate medical problem, like a heart condition or thyroid issue.The doctor needs to identify and code the original medical issue first. The anxiety symptoms might include feeling nervous, tired, or having trouble sleeping.
This code signifies an anxiety disorder where anxiety symptoms are directly caused by a diagnosed medical condition.The underlying physiological cause must be documented and coded first, preceding this code.Symptoms can include restlessness, fatigue, irritability, unfounded fears, concentration difficulties, and sleep disturbances. Diagnosis involves patient history, symptoms, physical and neuropsychological examinations, and possibly blood tests to rule out deficiencies or infections. Treatment depends on the underlying cause and may include medications like benzodiazepines or antidepressants, along with supportive care.
Example 1: A patient with hyperthyroidism presents with excessive worry, nervousness, and difficulty sleeping. The underlying hyperthyroidism (E05.9) is coded first, followed by F06.4 for the anxiety disorder., A patient who experienced a traumatic brain injury (S06.9) exhibits symptoms of anxiety, including persistent fear and avoidance behaviors. The brain injury code is coded first, and F06.4 is added to reflect the anxiety., A patient with uncontrolled diabetes (E11.9) is experiencing significant anxiety and panic attacks.The diabetes code is primary, followed by F06.4 to represent the related anxiety.
* Detailed patient history documenting the onset and duration of anxiety symptoms.* Complete description of the underlying physiological condition, including diagnostic tests and findings.* Results of physical and neuropsychological examinations relevant to the anxiety symptoms.* Documentation of any laboratory tests performed to rule out other potential causes.* Treatment plan outlining the approach taken to manage the anxiety and the underlying condition.* Evidence of the relationship between the physiological condition and the anxiety symptoms.
** This code is used when anxiety is a direct consequence of a medical condition, not when anxiety is a comorbid condition or a side effect of medication.
- Payment Status: Active
- Specialties:Psychiatry, Neurology, Endocrinology, Cardiology (depending on the underlying condition)
- Place of Service:Office, Hospital Inpatient, Hospital Outpatient, Other