F06 – Other mental disorders due to known physiological condition

ICD-10-CM 2027 diagnosis code · Mental disorders due to known physiological conditions

Non-billable header

ICD-10-CM code F06

Code: F06 (claims format: F06)
Description: Other mental disorders due to known physiological condition
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Block: F01-F09 Mental disorders due to known physiological conditions

Billable codes under F06

F06 is a header code and cannot be used on claims. Choose the most specific code:

F06.0 – Psychotic disorder with hallucinations due to known physiological conditionBillable
F06.1 – Catatonic disorder due to known physiological conditionBillable
F06.2 – Psychotic disorder with delusions due to known physiological conditionBillable
F06.3 – Mood disorder due to known physiological conditionHeader (more codes below)
F06.4 – Anxiety disorder due to known physiological conditionBillable
F06.7 – Mild neurocognitive disorder due to known physiological conditionHeader (more codes below)
F06.8 – Other specified mental disorders due to known physiological conditionBillable

Notes for F06

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 (not coded here):

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

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block F01-F09

Notes:

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.

Frequently asked questions

What is ICD-10 code F06?

F06 is the ICD-10-CM code for other mental disorders due to known physiological condition, in the block F01-F09 (Mental disorders due to known physiological conditions).

Is F06 a billable code?

No. F06 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.