ICD-10-CM 2027 diagnosis code
F41.0Panic disorder [episodic paroxysmal anxiety]
F41.0 is a valid, billable ICD-10-CM code for panic disorder [episodic paroxysmal anxiety]. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About F41.0
F41.0 is the ICD-10-CM diagnosis code for panic disorder [episodic paroxysmal anxiety]. It belongs to category F41 (other anxiety disorders), block F40-F48 (anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within F41 (other anxiety disorders), F41.0 is specifically for panic disorder [episodic paroxysmal anxiety]. Related codes cover generalized anxiety disorder (F41.1), other mixed anxiety disorders (F41.3), other specified anxiety disorders (F41.8) and anxiety disorder, unspecified (F41.9).
Don't report F41.0 together with the conditions in its Excludes1 note: panic disorder with agoraphobia (F40.01).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 880 (Acute Adjustment Reaction and Psychosocial Dysfunction, relative weight 0.9306), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2018 (title revised).
Before ICD-10, this condition was coded in ICD-9-CM as 300.01 (panic disorder without agoraphobia).
Coding notes
- Panic attack
- Panic state
- panic disorder with agoraphobia (F40.01)
Notes that apply from higher levels
Instructions written at a parent level also apply to F41.0.
› From F41 Other anxiety disorders
Broader instructions also apply from Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.
Alphabetic index entries
7 entriesTerms in the official ICD-10-CM index that lead to F41.0.
Codes whose notes reference F41.0
- F40.01Excludes1
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 19 · Mental Diseases and Disorders
ICD-9-CM equivalent
Converter →- 300.01Panic disorder without agoraphobiaexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- FY2018 (effective 10/1/2017): Title revised — was “Panic disorder [episodic paroxysmal anxiety] without agoraphobia”
Common questions about F41.0
Is F41.0 billable?
- Yes. F41.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F41.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F41.0 as a principal diagnosis.
Is F41.0 a CC or MCC?
- No. F41.0 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does F41.0 group to?
- F41.0 is used in the MS-DRG v44.0 logic for MS-DRG 880 (Acute Adjustment Reaction and Psychosocial Dysfunction). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for F41.0?
- The CMS General Equivalence Mappings map F41.0 to ICD-9-CM 300.01.