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ICD10BillableValid for clinical use

ICD-10 Code G35.D: Multiple sclerosis, unspecified

G35.D is a billable ICD-10 diagnosis code used to classify Multiple sclerosis, unspecified in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

When is it used?

  • May be used when a clinician documents multiple sclerosis, unspecified in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
6Diseases of the nervous system (G00-G99)
block
G35-G37Demyelinating diseases of the central nervous system
category
G35Multiple sclerosis
currentG35

Official coding notes

Inclusion terms
  • Disseminated multiple sclerosis
  • Generalized multiple sclerosis
  • Multiple sclerosis NOS
  • Multiple sclerosis of brain stem
  • Multiple sclerosis of cord

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

NeurologistGeneral Physician

Coverage-related procedures and services

CPT 92651high
AUDITORY EVOKED POTENTIALS; FOR HEARING STATUS DETERMINATION, BROADBAND STIMULI, WITH INTERPRETATION AND REPORT
Source: CMS coverage guidance
CPT 92652high
AUDITORY EVOKED POTENTIALS; FOR THRESHOLD ESTIMATION AT MULTIPLE FREQUENCIES, WITH INTERPRETATION AND REPORT
Source: CMS coverage guidance
CPT 92653high
AUDITORY EVOKED POTENTIALS; NEURODIAGNOSTIC, WITH INTERPRETATION AND REPORT
Source: CMS coverage guidance
CPT 51785high
NEEDLE ELECTROMYOGRAPHY STUDIES (EMG) OF ANAL OR URETHRAL SPHINCTER, ANY TECHNIQUE
Source: CMS coverage guidance
CPT 95926high
SHORT-LATENCY SOMATOSENSORY EVOKED POTENTIAL STUDY, STIMULATION OF ANY/ALL PERIPHERAL NERVES OR SKIN SITES, RECORDING FROM THE CENTRAL NERVOUS SYSTEM; IN LOWER LIMBS
Source: CMS coverage guidance
CPT 95927high
SHORT-LATENCY SOMATOSENSORY EVOKED POTENTIAL STUDY, STIMULATION OF ANY/ALL PERIPHERAL NERVES OR SKIN SITES, RECORDING FROM THE CENTRAL NERVOUS SYSTEM; IN THE TRUNK OR HEAD
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Multiple sclerosis, unspecifiedMultiple sclerosis

Frequently asked questions

Code details

CodeG35.D
SystemICD10
Display nameMultiple sclerosis, unspecified
ChapterDiseases of the nervous system (G00-G99)
BlockDemyelinating diseases of the central nervous system

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Dementia(degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)Dementia(degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)Demyelination, demyelinizationDisease, diseasedMyelosclerosisSclerosis, scleroticSclerosis, scleroticSclerosis, scleroticSclerosis, scleroticSclerosis, scleroticSclerosis, scleroticSclerosis, sclerotic
See also
Dementia, in, diseases specified elsewhere

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code G35.D for Multiple sclerosis, unspecified | HealthAssure