F41.9 Anxiety disorder, unspecified
The ICD-10-CM code for Anxiety disorder, unspecified is F41.9 (FY2026). It is a billable, claim-ready diagnosis code.
Choosing between codes? See the guide: ICD-10 code for anxiety.
Classification
- Section
- F40-F48: Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)
- Category F41
- 6 codes (5 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to F41.9:
- Anxiety
- Apprehensiveness, abnormal
- Disorder (of) › anxiety
Inclusion Terms
- Anxiety NOS
U.S. Hospital Utilization
- An estimated 3,820,086 U.S. inpatient stays in 2023 included F41.9 among the documented diagnoses.
- 8,030 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Prevalence & Statistics
- An estimated 2.7% of U.S. adults had generalized anxiety disorder in the past year, and 5.7% experience it at some time in their lives. (National Institute of Mental Health (NIMH), based on the National Comorbidity Survey Replication, 2001–2003)
Official Coding Guidelines
Pain disorders related to psychological factors (TOC entry)a. Pain disorders related to psychological factors ..................................................................... 43
Psychoactive substance use disorders (TOC entry)b. Mental and behavioral disorders due to psychoactive substance use ................................... 43
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026