DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

F21 diagnosis code · Billable category · FY2027

F21 Schizotypal disorder

  • Billable
  • Not CC/MCC
  • HCC 153
  • POA reported

F21 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
  2. F20-F29 Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)
  3. F21 Schizotypal disorder
CC / MCC
Neither
MS-DRG
883
HCC V28
153
POA
Reported
Code Editor
–
Index entries
10

Instructions

At F21

Inclusion terms

  • Borderline schizophrenia
  • Latent schizophrenia
  • Latent schizophrenic reaction
  • Prepsychotic schizophrenia
  • Prodromal schizophrenia
  • Pseudoneurotic schizophrenia
  • Pseudopsychopathic schizophrenia
  • Schizotypal personality disorder

Excludes2

  • Asperger's syndrome (F84.5) F84.5
  • schizoid personality disorder (F60.1) F60.1

Notes that also apply

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

Index entries

  • Disorder (of)schizotypal (personality) → F21
  • Schizophrenia, schizophrenicborderline → F21
  • Schizophrenia, schizophrenicincipient → F21
  • Schizophrenia, schizophreniclatent → F21
  • Schizophrenia, schizophrenicprepsychotic → F21
  • Schizophrenia, schizophrenicprodromal → F21
  • Schizophrenia, schizophrenicpseudoneurotic → F21
  • Schizophrenia, schizophrenicpseudopsychopathic → F21
  • Disorder (of)personalityschizotypal → F21
  • Reactionschizophreniclatent → F21

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

Medicare grouping and edits

CMS files for F21
CC / MCCNeither
Appendix BMDC 19 Mental Diseases and Disorders, MS-DRG 883 (Disorders of Personality and Impulse Control…)
Code Editor–
POAReported
HCC V28HCC 153 Personality Disorders; Anorexia/Bulimia Nervosa

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

Hierarchy