What is ICD-10 code F44.6?

F44.6 is the ICD-10-CM diagnosis code for Conversion disorder with sensory symptom or deficit. A condition where emotional stress causes loss of sensation, numbness, blindness, or deafness without any physical damage to nerves or sensory organs. F44.6 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F44.6 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. F44.6 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. F44.6 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

What is the V28 vs V24 difference for F44.6?

F44.6 does not map to a payment HCC under either the CMS-HCC V28 risk adjustment model or the older V24 model. V28 reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Because neither model rewards F44.6 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a payment HCC.

What should coders know when reporting F44.6?

Specify the type of sensory loss (visual, auditory, tactile, olfactory, gustatory) Document that sensory testing and imaging have ruled out organic causes

F44.6: Conversion disorder with sensory symptom

ICD-10-CM Code View

HCC Buddy Code Card

Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.

Code lookupF44.6Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)

F44.6

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Conversion disorder with sensory symptom or deficit

A condition where emotional stress causes loss of sensation, numbness, blindness, or deafness without any physical damage to nerves or sensory organs.

Buddy Insight

CMS-HCC V28

Not risk-adjusted for this model/period.

RAF 0

CMS-HCC V24

Not risk-adjusted for this model/period.

RAF 0

ACA/HHS

Not risk-adjusted for this model/period.

RAF 0

ESRD/PACE

Not risk-adjusted for this model/period.

RAF 0

RXHCC

Mapped

HCC 133

Personality Disorders, Anxiet...

RAF 0.0

Code Trumping

Basket needed

Compare selected patient codes to show trumped or trumps impact.

Code Book Path

Official

F44Dissociative and conversion disorders

F44.6Conversion disorder with sensory symptom or deficit

Inclusion Terms

Official

Conversion disorder with anesthesia or sensory loss
Conversion disorder with special sensory symptoms
Dissociative anesthesia and sensory loss
Psychogenic deafness

Excludes 2

Official

malingering [conscious simulation] (Z76.5)

Related Child Codes

Official

F44.0Dissociative amnesia

F44.1Dissociative fugue

F44.2Dissociative stupor

F44.4Conversion disorder with motor symptom or deficit

F44.5Conversion disorder with seizures or convulsions

Includes

Official

conversion hysteria
conversion reaction
hysteria
hysterical psychosis

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for F44.6 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F44.6 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F44.6 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F44.6 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

One or more sensory symptoms (numbness, blindness, deafness, reduced sensation, pain, etc.)

Clinical findings demonstrating incompatibility with recognized neurological conditions (e.g., non-anatomical sensory loss patterns, tubular visual fields, intact reflexes despite reported numbness)

Symptom not better explained by another medical or mental disorder

Results of sensory testing and neurological examination

MEAT Support

HCC Buddy guidance

One or more sensory symptoms (numbness, blindness, deafness, reduced sensation, pain, etc.)

Clinical findings demonstrating incompatibility with recognized neurological conditions (e.g., non-anatomical sensory loss patterns, tubular visual fields, intact reflexes despite reported numbness)

Symptom not better explained by another medical or mental disorder

Results of sensory testing and neurological examination

Audit Caution

HCC Buddy guidance

Diagnosing conversion disorder with sensory symptoms without adequate testing to rule out organic sensory pathology

Confusing functional sensory loss with malingering — conversion symptoms are involuntary

Not recognizing that functional and organic sensory deficits can coexist

Using F44.6 when the sensory symptom is better explained by a somatic symptom disorder (F45 category)

Common Mistakes

HCC Buddy guidance

F44.4 (Conversion disorder with motor symptom or deficit) — Motor symptoms (weakness, paralysis) vs. sensory symptoms (numbness, blindness)

F44.5 (Conversion disorder with seizures or convulsions) — Seizure presentations vs. sensory deficits

H54.7 (Unspecified visual loss) — Organic visual loss; use F44.6 when ophthalmologic evaluation demonstrates functional visual loss

G62.9 (Polyneuropathy, unspecified) — Organic neuropathy; F44.6 is for sensory loss without organic basis

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is F44.6 an HCC code?

No. F44.6 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

HCC Category Mapping

RxHCCHCC 133, Personality Disorders, Anxiety, and Other Specified Mental Disorders

0.000

RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.

MEAT Criteria for F44.6

For F44.6to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed F44.6 during that encounter, not just copy-forwarded from a problem list.

What This Code Means

F44.6 is the ICD-10-CM diagnosis code for conversion disorder with sensory symptom or deficit. A condition where emotional stress causes loss of sensation, numbness, blindness, or deafness without any physical damage to nerves or sensory organs. F44.6 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (f40-f48).

F44.6 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

F44.6 does not map to any HCC under V24 or V28 and has no RAF weight. No ESRD mapping. RxHCC maps to RxHCC 133 at 0.0 weight. Non-risk-adjusting diagnosis. Coders reviewing F44.6 should check whether additional documentation would support a more specific child code in the same hierarchy that does map to a payment HCC, capturing the correct specificity is the highest-impact RAF improvement available within accurate coding.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F44.6 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Specify the type of sensory loss (visual, auditory, tactile, olfactory, gustatory)
•Document that sensory testing and imaging have ruled out organic causes

Clinical Significance

Conversion disorder with sensory symptom or deficit involves neurological sensory symptoms such as numbness, blindness, deafness, or altered sensation that are incompatible with recognized neurological or sensory conditions. These symptoms are genuine and involuntary, not intentionally produced. Accurate differentiation from organic sensory loss requires comprehensive neurological and sensory evaluation.

Documentation Requirements

✓One or more sensory symptoms (numbness, blindness, deafness, reduced sensation, pain, etc.)
✓Clinical findings demonstrating incompatibility with recognized neurological conditions (e.g., non-anatomical sensory loss patterns, tubular visual fields, intact reflexes despite reported numbness)
✓Symptom not better explained by another medical or mental disorder
✓Results of sensory testing and neurological examination
✓Diagnostic workup results (MRI, visual evoked potentials, audiometry) as appropriate
✓Clinically significant distress or functional impairment

Commonly Confused Codes

•F44.4 (Conversion disorder with motor symptom or deficit): Motor symptoms (weakness, paralysis) vs. sensory symptoms (numbness, blindness)
•F44.5 (Conversion disorder with seizures or convulsions): Seizure presentations vs. sensory deficits
•H54.7 (Unspecified visual loss): Organic visual loss; use F44.6 when ophthalmologic evaluation demonstrates functional visual loss
•G62.9 (Polyneuropathy, unspecified): Organic neuropathy; F44.6 is for sensory loss without organic basis