F01-F09
Medium Complexity
Mental disorders due to known physiological conditions
Primary Specialty: Psychiatry
Last Updated: 2025-09-09
ICD-10 Codes (42)
42 billable0 category headers
F02Billable
F02.8Billable
F02.80Billable
F02.81Billable
F02.811Billable
F02.818Billable
F02.82Billable
F02.83Billable
F02.84Billable
F03Billable
F03.9Billable
F03.90Billable
F03.91Billable
F03.911Billable
F03.918Billable
F03.92Billable
F03.93Billable
F03.94Billable
F04Billable
F05Billable
F06Billable
F06.0Billable
F06.1Billable
F06.2Billable
F06.3Billable
F06.30Billable
F06.31Billable
F06.32Billable
F06.33Billable
F06.34Billable
F06.4Billable
F06.7Billable
F06.70Billable
F06.71Billable
F06.8Billable
F07Billable
F07.0Billable
F07.8Billable
F07.81Billable
F07.89Billable
F07.9Billable
F09Billable
Updates & Changes
FY 2026 Updates
Current Year
New Codes (2)
F10.288
Alcohol use disorder with other alcohol-induced disorder, severe
F11.288
Opioid use disorder with other opioid-induced disorder, severe
Revised Codes (2)
F11.10
Opioid abuse, uncomplicated - updated to align with DSM-5-TR criteria
F12.10
Cannabis abuse, uncomplicated - updated terminology and criteria
Deleted Codes
No codes deleted in this range for FY 2026
Historical Changes
- •FY 2025: Routine maintenance updates with minor terminology clarifications
- •FY 2024: Enhanced specificity requirements for certain code ranges
- •FY 2023: Updated documentation guidelines for improved clarity
Upcoming Changes
- •Proposed updates pending review by Coordination and Maintenance Committee
- •Under consideration: Enhanced digital health integration codes
Implementation Guidance
- •Review all FY 2026 updates for F01-F09 codes before implementation
- •Always verify the most current codes in the ICD-10-CM manual
- •Ensure clinical documentation supports the selected diagnosis codes
- +3 more guidance items...
Range Overview
high priority
The ICD-10 code range F01-F09 encompasses mental disorders due to known physiological conditions. These codes are used to document conditions where the mental symptoms are a direct physiological consequence of a medical condition. The range includes codes for dementia due to conditions classified elsewhere, delirium, and other mental disorders due to known physiological conditions.
Key Usage Points:
- •Always code the underlying physiological condition first, followed by the mental disorder.
- •Use additional codes to specify any associated behavioral disturbances.
- •For dementia, use additional codes to identify the type of dementia.
- •For delirium, consider the cause and duration when selecting the appropriate code.
- •For other mental disorders, document the specific physiological condition causing the mental disorder.
Coding Guidelines
When to Use:
- ✓When a patient has dementia due to Alzheimer's disease.
- ✓When a patient has delirium due to withdrawal from drugs or alcohol.
- ✓When a patient has a mood disorder due to hypothyroidism.
- ✓When a patient has an anxiety disorder due to a cardiac condition.
- ✓When a patient has a cognitive disorder due to a brain injury.
When NOT to Use:
- ✗When the mental disorder is not directly caused by a physiological condition.
- ✗When the mental disorder is due to substance abuse, but there is no withdrawal.
- ✗When the mental disorder is a primary diagnosis, not secondary to a medical condition.
- ✗When the patient has a neurodevelopmental disorder, such as autism or ADHD.
- ✗When the patient has a mental disorder due to an unknown cause.
Code Exclusions
Always verify exclusions with the latest ICD-10-CM official guidelines.
Documentation Requirements
Documentation for this range should clearly establish the causal relationship between the mental disorder and the physiological condition. The type, severity, and duration of the mental disorder should be documented, along with any associated behavioral disturbances.
Clinical Information:
- •Underlying physiological condition
- •Type of mental disorder
- •Severity of mental disorder
- •Duration of mental disorder
- •Associated behavioral disturbances
Supporting Evidence:
- •Medical history
- •Physical examination findings
- •Laboratory test results
- •Psychiatric evaluation
Good Documentation Example:
Patient has moderate dementia due to Alzheimer's disease with aggressive behavior.
Poor Documentation Example:
Patient has dementia.
Common Documentation Errors:
- âš Not documenting the underlying physiological condition
- âš Not specifying the type of mental disorder
- âš Not indicating the severity of the mental disorder
- âš Not documenting any associated behavioral disturbances
Range Statistics
8
Total Codes
42
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:5
Coding Complexity
Medium
Complexity Rating
The complexity of coding for this range is medium due to the need to establish a causal relationship between the mental disorder and the physiological condition, select the appropriate code for the type of mental disorder, code any associated behavioral disturbances, navigate the numerous exclusions for this range, and keep up-to-date with changes to the ICD-10-CM official guidelines.
Key Factors:
- â–¸Determining the causal relationship between the mental disorder and the physiological condition
- â–¸Selecting the appropriate code for the type of mental disorder
- â–¸Coding any associated behavioral disturbances
- â–¸Navigating the numerous exclusions for this range
- â–¸Keeping up-to-date with changes to the ICD-10-CM official guidelines
Specialty Focus
These codes are commonly used in psychiatry, neurology, geriatrics, and internal medicine.
Primary Specialties:
Psychiatry
40%
Neurology
30%
Geriatrics
20%
Internal Medicine
10%
Clinical Scenarios:
- • A 70-year-old patient with Alzheimer's disease presents with moderate dementia and aggressive behavior.
- • A 50-year-old patient with hypothyroidism presents with depressive symptoms.
- • A 30-year-old patient with a traumatic brain injury presents with cognitive deficits.
- • A 60-year-old patient with a history of heavy alcohol use presents with delirium tremens.
- • A 40-year-old patient with a cardiac condition presents with anxiety.
Resources & References
Resources for this range include the ICD-10-CM official guidelines, clinical reference books, and educational materials on coding for mental disorders.
Official Guidelines:
- ICD-10-CM Official Guidelines for Coding and Reporting
- American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM-5)
- World Health Organization's International Classification of Diseases (ICD-10)
Clinical References:
- Harrison's Principles of Internal Medicine
- Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine
Educational Materials:
- American Health Information Management Association (AHIMA) ICD-10-CM Coding Resources
- American Academy of Professional Coders (AAPC) ICD-10-CM Coding Resources
Frequently Asked Questions
How do I code for a mental disorder due to a physiological condition with associated behavioral disturbances?
First, code the underlying physiological condition. Then, code the mental disorder. Finally, use additional codes to specify any associated behavioral disturbances.