F99
Unspecified mental disorder
Unspecified mental disorder (F99) is a block within ICD-10-CM Chapter 5: Mental, Behavioral and Neurodevelopmental disorders. It holds 1 category.
Categories in F99
Source
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.