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ICD10BillableValid for clinical use

ICD-10 Code G31.2: Degeneration of nervous system due to alcohol

G31.2 is a billable ICD-10 diagnosis code used to classify Degeneration of nervous system due to alcohol 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 degeneration of nervous system due to alcohol 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
G30-G32Other degenerative diseases of the nervous system
category
G31Other degenerative diseases of nervous system, not elsewhere classified
currentG31

Official coding notes

Inclusion terms
  • Alcoholic cerebellar ataxia
  • Alcoholic cerebellar degeneration
  • Alcoholic cerebral degeneration
  • Alcoholic encephalopathy
  • Dysfunction of the autonomic nervous system due to alcohol
Code also
  • associated alcoholism (F10.-)

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 70460high
COMPUTED TOMOGRAPHY, HEAD OR BRAIN; WITH CONTRAST MATERIAL(S)
Source: CMS coverage guidance
CPT 70450high
COMPUTED TOMOGRAPHY, HEAD OR BRAIN; WITHOUT CONTRAST MATERIAL
Source: CMS coverage guidance
CPT 70470high
COMPUTED TOMOGRAPHY, HEAD OR BRAIN; WITHOUT CONTRAST MATERIAL, FOLLOWED BY CONTRAST MATERIAL(S) AND FURTHER SECTIONS
Source: CMS coverage guidance
CPT 99483high
ASSESSMENT OF AND CARE PLANNING FOR A PATIENT WITH COGNITIVE IMPAIRMENT, REQUIRING AN INDEPENDENT HISTORIAN, IN THE OFFICE OR OTHER OUTPATIENT, HOME OR DOMICILIARY OR REST HOME, WITH ALL OF THE FOLLOWING REQUIRED ELEMENTS: COGNITION-FOCUSED EVALUATION INCLUDING A PERTINENT HISTORY AND EXAMINATION, MEDICAL DECISION MAKING OF MODERATE OR HIGH COMPLEXITY, FUNCTIONAL ASSESSMENT (EG, BASIC AND INSTRUMENTAL ACTIVITIES OF DAILY LIVING), INCLUDING DECISION-MAKING CAPACITY, USE OF STANDARDIZED INSTRUMENTS FOR STAGING OF DEMENTIA (EG, FUNCTIONAL ASSESSMENT STAGING TEST [FAST], CLINICAL DEMENTIA RATING [CDR]), MEDICATION RECONCILIATION AND REVIEW FOR HIGH-RISK MEDICATIONS, EVALUATION FOR NEUROPSYCHIATRIC AND BEHAVIORAL SYMPTOMS, INCLUDING DEPRESSION, INCLUDING USE OF STANDARDIZED SCREENING INSTRUMENT(S), EVALUATION OF SAFETY (EG, HOME), INCLUDING MOTOR VEHICLE OPERATION, IDENTIFICATION OF CAREGIVER(S), CAREGIVER KNOWLEDGE, CAREGIVER NEEDS, SOCIAL SUPPORTS, AND THE WILLINGNESS OF CAREGIVER TO TAKE ON CAREGIVING TASKS, DEVELOPMENT, UPDATING OR REVISION, OR REVIEW OF AN ADVANCE CARE PLAN, CREATION OF A WRITTEN CARE PLAN, INCLUDING INITIAL PLANS TO ADDRESS ANY NEUROPSYCHIATRIC SYMPTOMS, NEURO-COGNITIVE SYMPTOMS, FUNCTIONAL LIMITATIONS, AND REFERRAL TO COMMUNITY RESOURCES AS NEEDED (EG, REHABILITATION SERVICES, ADULT DAY PROGRAMS, SUPPORT GROUPS) SHARED WITH THE PATIENT AND/OR CAREGIVER WITH INITIAL EDUCATION AND SUPPORT. TYPICALLY, 60 MINUTES OF TOTAL TIME IS SPENT ON THE DATE OF THE ENCOUNTER
Source: CMS coverage guidance
CPT 96105high
ASSESSMENT OF APHASIA (INCLUDES ASSESSMENT OF EXPRESSIVE AND RECEPTIVE SPEECH AND LANGUAGE FUNCTION, LANGUAGE COMPREHENSION, SPEECH PRODUCTION ABILITY, READING, SPELLING, WRITING, EG, BY BOSTON DIAGNOSTIC APHASIA EXAMINATION) WITH INTERPRETATION AND REPORT, PER HOUR
Source: CMS coverage guidance
CPT 92524high
BEHAVIORAL AND QUALITATIVE ANALYSIS OF VOICE AND RESONANCE
Source: CMS coverage guidance

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
G31.2

Common synonyms

Degeneration of nervous system due to alcohol

Frequently asked questions

Code details

CodeG31.2
SystemICD10
Display nameDegeneration of nervous system due to alcohol
ChapterDiseases of the nervous system (G00-G99)
BlockOther degenerative diseases of the nervous system

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Ataxia, ataxy, ataxicAtaxia, ataxy, ataxicDegeneration, degenerativeDegeneration, degenerativeDegeneration, degenerativeDegeneration, degenerativeDegeneration, degenerativeDysfunctionEncephalopathy(acute)

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.