2026 ICD-10-CM Diagnosis Code F07.9Unspecified personality and behavioral disorder due to known physiological condition
ICD-10-CM Codes›F01–F99›F01-F09›F07
- Billable — Valid for Submission
- Not Chronic
F07.9 is a billable ICD-10-CM diagnosis code for unspecified personality and behavioral disorder due to known physiological condition. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 974 through 976. Coders also document this condition as organic personality disorder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Miscellaneous mental and behavioral disorders/conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Organic personality disorder
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Organic psychosyndrome
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Disease, diseased - See Also: Syndrome;
- behavioral, organic - F07.9
- Disorder (of) - See Also: Disease;
- mental (or behavioral) (nonpsychotic) - F99
- following organic brain damage - F07.9
- personality - See Also: Personality; - F60.9
- following organic brain damage - F07.9
- organic - F07.9
- Disturbance (s) - See Also: Disease;
- personality (pattern) (trait) - See Also: Disorder, personality; - F60.9
- following organic brain damage - F07.9
- Psychosyndrome, organic - F07.9
- Syndrome - See Also: Disease;
- psycho-organic (nonpsychotic severity) - F07.9
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Disease, diseased
- behavioral, organic
- Disorder(of)
- mental (or behavioral) (nonpsychotic)
- following organic brain damage
- Disorder(of)
- personality
- following organic brain damage
- Disorder(of)
- personality
- organic
- Disturbance(s)
- personality (pattern) (trait)
- following organic brain damage
- Psychosyndrome, organic
- Syndrome
- psycho-organic (nonpsychotic severity)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Personality Disorders
Your personality is your own way of thinking, feeling, behaving, and relating to others. Once you become an adult, your personality usually doesn't change much.
The full article covers:
- What is personality?
- What are personality disorders?
- What are the types of personality disorders?
- What causes personality disorders?
- What are the symptoms of personality disorders?
- How are personality disorders diagnosed?
- How are personality disorders treated?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert F07.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F07.9Overview
Is F07.9 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified personality and behavioral disorder due to known physiological condition on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does F07.9 group to?
When unspecified personality and behavioral disorder due to known physiological condition is the principal diagnosis on an inpatient stay, it groups to MS-DRG 974, 975, 976, with relative weights from 0.8945 to 2.8860 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of F07.9?
Under the General Equivalence Mappings, unspecified personality and behavioral disorder due to known physiological condition converts to ICD-9-CM 310.9 (nonpsychot brain syn NOS). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
