Unspecified psychosis not due to a substance or known physiological condition (F29) ICD-10-CM
The F29 code range covers unspecified psychosis not due to a substance or known physiological condition with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Inclusion Terms
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.
- Psychosis NOS
- Unspecified schizophrenia spectrum and other psychotic disorder
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the F29 Range 1 codes · 1 billable
- F29 Unspecified psychosis not due to a substance or known physiological condition
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the F29 range.
Negativism
State of mind or behavior characterized by extreme skepticism and persistent opposition or resistance to outside suggestions or advice. (APA, Thesaurus of Psychological Index Terms, 1994)
About the F29 Code Range
The ICD-10 code F29 is used to classify unspecified psychosis that is not caused by substances or identifiable physiological conditions. This code applies when a psychotic disorder is present but does not fit into more specific categories of schizophrenia or other psychotic disorders.
F29 covers a range of conditions often described as non-organic psychosis or atypical psychosis. It includes symptoms such as positive and negative psychotic features, cognitive impairments, and psychomotor disturbances that do not clearly link to substance use or medical causes. This code is especially useful in cases where psychotic symptoms arise during pregnancy, childbirth, or the puerperium, known also by terms like psychotic disorder in mother complicating childbirth or mental disorder in mother complicating pregnancy. For medical coders and healthcare professionals, using F29 helps to capture a psychotic disorder diagnosis when evaluation does not specify a defined psychotic disorder, assisting in accurately documenting and tracking these complex mental health conditions under the schizophrenia spectrum umbrella. This makes F29 the go-to ICD-10 code for unspecified psychosis without clear physiological or substance-related causes.
Questions About This Page
How many billable codes are in the F29 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the F29 range classify?
The range classifies unspecified psychosis not due to a substance or known physiological condition. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
