2027 ICD-10-CM Diagnosis Code F59Unspecified behavioral syndromes associated with physiological disturbances and physical factors
ICD-10-CM Codes›F01–F99›F50-F59›F59
- Billable — Valid for Submission
- Not Chronic
F59 is a billable ICD-10-CM diagnosis code for unspecified behavioral syndromes associated with physiological disturbances and physical factors. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 887. Coders also document this condition as behavioral syndrome associated with physiological disturbance and physical factors. 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.
- Behavioral syndrome associated with physiological disturbance and physical factors
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F59: its own notes plus those printed at 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.
- Psychogenic physiological dysfunction NOS
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.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Mental Disorders
Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..
The full article covers:
- What are mental disorders?
- What are some types of mental disorders?
- What causes mental disorders?
- Who is at risk for mental disorders?
- How are mental disorders diagnosed?
- What are the treatments for mental disorders?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert F59 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F59Overview
Is F59 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified behavioral syndromes associated with physiological disturbances and physical factors on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F59 group to?
When unspecified behavioral syndromes associated with physiological disturbances and physical factors is the principal diagnosis on an inpatient stay, it groups to MS-DRG 887 (other Mental Disorder Diagnoses), which carries a relative weight of 1.1154. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of F59?
Under the General Equivalence Mappings, unspecified behavioral syndromes associated with physiological disturbances and physical factors converts to ICD-9-CM 306.8 (psychogenic disorder NEC). The mapping is approximate, so confirm the match fits the documentation.
