ICD-10-CM 2027
ICD-10 code for Ganser's syndrome
From the official ICD-10-CM alphabetic index entry “Ganser's syndrome (hysterical)”. Page updated September 29, 2026.
About coding Ganser's syndrome
The ICD-10-CM code for Ganser's syndrome is F44.89 (Other dissociative and conversion disorders).
Within F44.8, choose F44.89 (Other dissociative and conversion disorders) only when documentation doesn't support a more specific option: dissociative identity disorder (F44.81).
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 887 (Other Mental Disorder Diagnoses, relative weight 1.1139), 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.
Common questions about Ganser's syndrome ICD-10 codes
What is the ICD-10 code for Ganser's syndrome?
- F44.89 — Other dissociative and conversion disorders.
Is F44.89 billable?
- Yes. F44.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F44.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F44.89 as a principal diagnosis.
Is F44.89 a CC or MCC?
- No. F44.89 is neither a CC nor an MCC under MS-DRG v44.0.