F44.9 Dissociative and conversion disorder, unspecified

BillableNo payment HCCChapter 5

Check coverage with this diagnosis

Instructional notes

Chapter 5

Excludes2Not included here: the patient may have both; report both when both are present.

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Includes

disorders of psychological development

F44

Excludes2Not included here: the patient may have both; report both when both are present.

malingering [conscious simulation] (Z76.5)

Includes

conversion hysteria
conversion reaction
hysteria
hysterical psychosis

This code

Inclusion terms

Dissociative disorder NOS

Chapter 5: Mental, Behavioral and Neurodevelopmental disorders · F40-F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.