DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

F41.9 diagnosis code · Billable code · FY2027

F41.9 Anxiety disorder, unspecified

  • Billable
  • Not CC/MCC
  • POA reported

F41.9 ICD-10 code: a billable diagnosis code in FY2027, one of 5 billable codes in category F41.

Where it sits

  1. Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
  2. F40-F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)
  3. F41 Other anxiety disorders
  4. F41.9 Anxiety disorder, unspecified
CC / MCC
Neither
MS-DRG
880
HCC V28
–
POA
Reported
Code Editor
–
Index entries
3

Instructions

At F41.9

Inclusion terms

  • Anxiety NOS

Notes that also apply

Excludes2 from F41

  • anxiety in:
  • acute stress reaction (F43.0) F43.0
  • transient adjustment reaction (F43.2) F43.2
  • neurasthenia (F48.8) F48.8
  • psychophysiologic disorders (F45.-) F45
  • separation anxiety (F93.0) F93.0

Chapter 5 instructions (Includes 1, Excludes2 1): printed on the chapter 5 page.

Index entries

  • Anxiety → F41.9
  • Apprehensiveness, abnormal → F41.9
  • Disorder (of)anxiety → F41.9

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for F41.9
CC / MCCNeither
Appendix BMDC 19 Mental Diseases and Disorders, MS-DRG 880 (Acute Adjustment Reaction and Psychosocial Dysfunction…)
Code Editor–
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy