2027 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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 884, 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
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F07.9: its own notes plus those printed at F07, 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.
- disorders of psychological development
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Organic psychosyndrome
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 F07.9, its category, or a range that includes it.
Applicable To 1
These notes mention F07.9.
- O99.34 Other mental disorders complicating pregnancy, childbirth, and the puerperium
Excludes2 2
These codes carry an Excludes2 note naming F07.9: 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.
Disease, diseased See Also: Syndrome;
behavioral, organic F07.9
Disorder (of) See Also: Disease;
personality See Also: Personality; F60.9
organic F07.9
Disturbance (s) See Also: Disease;
personality (pattern) (trait) See Also: Disorder, personality; F60.9
Psychosyndrome, organic F07.9
Syndrome See Also: Disease;
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, 2026 through September 30, 2027.
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 884, 974, 976, 975, with relative weights from 0.7879 to 3.0488 depending on complications. Higher weights mean higher Medicare reimbursement.
What is coded first with F07.9?
The Code First note at F07, which applies to F07.9, reads: the underlying physiological condition. When one of these applies, it is sequenced before F07.9.
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.
