F06.4 Anxiety disorder due to known physiological condition

Billable ICD-10-CM code, FY2026.

Excludes2 (not included here)

• anxiety disorders due to alcohol and other psychoactive substances (F10-F19 with .180, .280, .980)
• anxiety disorders, not due to known physiological condition or unspecified (F40.-, F41.-)

Applies from F06 Other mental disorders due to known physiological condition

Includes

• 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

Excludes1 (never code together)

• unspecified dementia (F03.-)

Excludes2 (not included here)

• delirium due to known physiological condition (F05)
• dementia as classified in F01-F02
• other mental disorders associated with alcohol and other psychoactive substances (F10-F19)

Code first

• the underlying physiological condition

MS-DRG index

Defines the logic of DRG(s) 884 in MDC 19.

Approximate ICD-9-CM (GEMs)

• 293.84 Anxiety disorder in conditions classified elsewhere

Code annotations containing back-references to F06.4

Back-references to F06

• Type 2 Excludes: F63.1 Pyromania ("mental disorders due to known physiological condition (F01-F09)")
• Type 2 Excludes: F63.2 Kleptomania ("stealing in mental disorders due to known physiological condition (F01-F09)")

Diagnosis Index entries for F06.4

• Disorder (of) › anxiety › due to (secondary to) › general medical condition
• Disorder (of) › anxiety › organic
• Disorder (of) › organic › anxiety

Nearby codes

• F06.30 Mood disorder due to known physiological condition, unspecified
• F06.31 Mood disorder due to known physiological condition with depressive features
• F06.32 Mood disorder due to known physiological condition with major depressive-like episode
• F06.33 Mood disorder due to known physiological condition with manic features
• F06.34 Mood disorder due to known physiological condition with mixed features
• F06.4 Anxiety disorder due to known physiological condition (this code)
• F06.7 Mild neurocognitive disorder due to known physiological condition
• F06.70 Mild neurocognitive disorder due to known physiological condition without behavioral disturbance
• F06.71 Mild neurocognitive disorder due to known physiological condition with behavioral disturbance
• F06.8 Other specified mental disorders due to known physiological condition