ICD-10 Code for Psychosis

The default ICD-10-CM 2027 code for psychosis, psychotic is F29 – Unspecified psychosis not due to a substance or known physiological condition. More specific codes depend on the details documented, as listed in the official index (49 codes, 48 billable).

Main code
F29 – Unspecified psychosis not due to a substance or known physiological condition
Billable
Yes

Index entries for Psychosis

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.