2027 ICD-10-CM Diagnosis Code F06.4Anxiety disorder due to known physiological condition
ICD-10-CM Codes›F01–F99›F01-F09›F06
- Billable — Valid for Submission
- Not Chronic
F06.4 is a billable ICD-10-CM diagnosis code for anxiety disorder due to known physiological condition. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 884. Coders also document this condition as anxiety disorder due to a general medical condition. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Anxiety and fear-related disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Anxiety disorder due to a general medical condition
- Organic anxiety disorder
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F06.4: its own notes plus those printed at F06, block F01-F09, and Chapter 5. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- mental disorders due to endocrine disorder
- mental disorders due to exogenous hormone
- mental disorders due to exogenous toxic substance
- mental disorders due to primary cerebral disease
- mental disorders due to somatic illness
- mental disorders due to systemic disease affecting the brain
- disorders of psychological development
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Code First
The underlying condition named in the note is sequenced before this code.
- the underlying physiological condition
Notes
General instructions on how these codes are used.
- This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name F06.4, its category, or a range that includes it.
Applicable To 1
These notes mention F06.4.
- O99.34 Other mental disorders complicating pregnancy, childbirth, and the puerperium
Excludes2 2
These codes carry an Excludes2 note naming F06.4: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disorder (of) See Also: Disease;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Anxiety
Anxiety is a feeling of fear, dread, and uneasiness. It might cause you to sweat, feel restless and tense, and have a rapid heartbeat. It can be a normal reaction to stress. For example, you might feel anxious when faced with a difficult problem at work, before taking a test, or before making an important decision.
The full article covers:
- What is anxiety?
- What are anxiety disorders?
- What are the types of anxiety disorders?
- What causes anxiety disorders?
- Who is at risk for anxiety disorders?
- What are the symptoms of anxiety disorders?
- How are anxiety disorders diagnosed?
- What are the treatments for anxiety disorders?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert F06.4 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F06.4Overview
What is the ICD-10 code for anxiety disorder due to known physiological condition?
The ICD-10-CM code for anxiety disorder due to known physiological condition is F06.4 (sometimes written as F064). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F06.4 (Other mental disorders due to known physiological condition) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report anxiety disorder due to known physiological condition on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F06.4 group to?
When anxiety disorder due to known physiological condition is the principal diagnosis on an inpatient stay, it groups to MS-DRG 884 (organic Disturbances and Intellectual Disability), which carries a relative weight of 1.5998. Higher weights mean higher Medicare reimbursement.
Can F06.4 be reported with a code from F03?
Not as a rule. The Excludes1 note at F06, which applies to F06.4, lists "unspecified dementia (F03.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is coded first with F06.4?
The Code First note at F06, which applies to F06.4, reads: the underlying physiological condition. When one of these applies, it is sequenced before F06.4.
