Dissociative and conversion disorders (F44) ICD-10-CM
The F44 code range covers dissociative and conversion disorders with 12 ICD-10-CM diagnosis codes. 10 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- conversion hysteria
- conversion reaction
- hysteria
- hysterical psychosis
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- malingering [conscious simulation] Z76.5
Codes in the F44 Range 12 codes · 10 billable
- F44 Dissociative and conversion disordersNon-billable
- F44.0 Dissociative amnesia
- F44.1 Dissociative fugue
- F44.2 Dissociative stupor
- F44.4 Conversion disorder with motor symptom or deficit
- F44.5 Conversion disorder with seizures or convulsions
- F44.6 Conversion disorder with sensory symptom or deficit
- F44.7 Conversion disorder with mixed symptom presentation
- F44.8 Other dissociative and conversion disordersNon-billable
- F44.81 Dissociative identity disorder
- F44.89 Other dissociative and conversion disorders
- F44.9 Dissociative and conversion disorder, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the F44 range.
Akinetic Mutism
A syndrome characterized by a silent and inert state without voluntary motor activity despite preserved sensorimotor pathways and vigilance. Bilateral FRONTAL LOBE dysfunction involving the anterior cingulate gyrus and related brain injuries are associated with this condition. This may result in impaired abilities to communicate and initiate motor activities. (From Adams et al., Principles of Neurology, 6th ed, p348; Fortschr Neurol Psychiatr 1995 Feb;63(2):59-67)
Central Nervous System Diseases
Diseases of any component of the brain (including the cerebral hemispheres, diencephalon, brain stem, and cerebellum) or the spinal cord.
Dissociative Identity Disorder
A dissociative disorder in which the individual adopts two or more distinct personalities. Each personality is a fully integrated and complex unit with memories, behavior patterns and social friendships. Transition from one personality to another is sudden.
Frontal Lobe
The part of the cerebral hemisphere anterior to the central sulcus, and anterior and superior to the lateral sulcus.
Hepatic Encephalopathy
A syndrome characterized by central nervous system dysfunction in association with LIVER FAILURE, including portal-systemic shunts. Clinical features include lethargy and CONFUSION (frequently progressing to COMA); ASTERIXIS; NYSTAGMUS, PATHOLOGIC; brisk oculovestibular reflexes; decorticate and decerebrate posturing; MUSCLE SPASTICITY; and bilateral extensor plantar reflexes (see REFLEX, BABINSKI). ELECTROENCEPHALOGRAPHY may demonstrate triphasic waves. (From Adams et al., Principles of Neurology, 6th ed, pp1117-20; Plum & Posner, Diagnosis of Stupor and Coma, 3rd ed, p222-5)
Mutism
The inability to generate oral-verbal expression, despite normal comprehension of speech. This may be associated with BRAIN DISEASES or MENTAL DISORDERS. Organic mutism may be associated with damage to the FRONTAL LOBE; BRAIN STEM; THALAMUS; and CEREBELLUM. Selective mutism is a psychological condition that usually affects children characterized by continuous refusal to speak in social situations by a child who is able and willing to speak to selected persons. Kussmal aphasia refers to mutism in psychosis. (From Fortschr Neurol Psychiatr 1994; 62(9):337-44)
Paraparesis
Mild to moderate loss of bilateral lower extremity motor function, which may be a manifestation of SPINAL CORD DISEASES; PERIPHERAL NERVOUS SYSTEM DISEASES; MUSCULAR DISEASES; INTRACRANIAL HYPERTENSION; parasagittal brain lesions; and other conditions.
Paraparesis, Spastic
Mild or moderate loss of motor function accompanied by spasticity in the lower extremities. This condition is a manifestation of CENTRAL NERVOUS SYSTEM DISEASES that cause injury to the motor cortex or descending motor pathways.
Paraparesis, Tropical Spastic
A subacute paralytic myeloneuropathy occurring endemically in tropical areas such as the Caribbean, Colombia, India, and Africa, as well as in the southwestern region of Japan; associated with infection by HUMAN T-CELL LEUKEMIA VIRUS I. Clinical manifestations include a slowly progressive spastic weakness of the legs, increased reflexes, Babinski signs, incontinence, and loss of vibratory and position sensation. On pathologic examination inflammatory, demyelination, and necrotic lesions may be found in the spinal cord. (Adams et al., Principles of Neurology, 6th ed, p1239)
Pseudobulbar Palsy
A syndrome characterized by DYSARTHRIA, dysphagia, dysphonia, impairment of voluntary movements of tongue and facial muscles, and emotional lability. This condition is caused by diseases that affect the motor fibers that travel from the cerebral cortex to the lower BRAIN STEM (i.e., corticobulbar tracts); including MULTIPLE SCLEROSIS; MOTOR NEURON DISEASE; and CEREBROVASCULAR DISORDERS. (From Adams et al., Principles of Neurology, 6th ed, p489)
Stupor
A state of reduced sensibility and response to stimuli which is distinguished from COMA in that the person can be aroused by vigorous and repeated stimulation. The person is still conscious and can make voluntary movements. It can be induced by CENTRAL NERVOUS SYSTEM AGENTS. The word derives from Latin stupere and is related to stunned, stupid, dazed or LETHARGY.
About the F44 Code Range
ICD-10 code F44 and its detailed subcodes are used specifically to identify and classify dissociative and conversion disorders, conditions where psychological stress manifests as neurological symptoms without a neurological disease. These codes help to document diverse symptoms related to trauma and stress, such as memory loss, motor issues, and sensory disturbances.
The section covers several related diagnoses, including dissociative amnesia (F44.0), also called psychogenic amnesia, where individuals experience localized memory loss. Dissociative fugue (F44.1), or psychogenic fugue, involves sudden travel or wandering with amnesia. Conversion disorders appear in multiple forms: with motor symptoms like paralysis or tremors (F44.4), seizures or convulsions (F44.5), or sensory deficits including dissociative anesthesia and functional blindness (F44.6). More complex presentations are classified under mixed symptoms (F44.7) or other specified types (F44.8, F44.89), including dissociative identity disorder (multiple personality disorder, F44.81). The unspecified code (F44.9) covers cases where the disorder is recognized but not clearly categorized. Using the correct ICD-10 code for these disorders ensures precise clinical documentation and aids in differentiating psychological origins from neurological diseases.
Questions About This Page
How many billable codes are in the F44 range?
Of the 12 codes in this range, 10 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the F44 range classify?
The range classifies dissociative and conversion disorders. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
