HealthAssure
HealthAssureGood Life
ICD10BillableValid for clinical use

ICD-10 Code G23.1: Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]

G23.1 is a billable ICD-10 diagnosis code used to classify Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] 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 progressive supranuclear ophthalmoplegia [steele-richardson-olszewski] 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
G20-G26Extrapyramidal and movement disorders
category
G23Other degenerative diseases of basal ganglia
currentG23

Official coding notes

Inclusion terms
  • Progressive supranuclear palsy

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 PhysicianENT Specialist

Coverage-related procedures and services

CPT 95921high
TESTING OF AUTONOMIC NERVOUS SYSTEM FUNCTION; CARDIOVAGAL INNERVATION (PARASYMPATHETIC FUNCTION), INCLUDING 2 OR MORE OF THE FOLLOWING: HEART RATE RESPONSE TO DEEP BREATHING WITH RECORDED R-R INTERVAL, VALSALVA RATIO, AND 30:15 RATIO
Source: CMS coverage guidance
CPT 95924high
TESTING OF AUTONOMIC NERVOUS SYSTEM FUNCTION; COMBINED PARASYMPATHETIC AND SYMPATHETIC ADRENERGIC FUNCTION TESTING WITH AT LEAST 5 MINUTES OF PASSIVE TILT
Source: CMS coverage guidance
CPT 95923high
TESTING OF AUTONOMIC NERVOUS SYSTEM FUNCTION; SUDOMOTOR, INCLUDING 1 OR MORE OF THE FOLLOWING: QUANTITATIVE SUDOMOTOR AXON REFLEX TEST (QSART), SILASTIC SWEAT IMPRINT, THERMOREGULATORY SWEAT TEST, AND CHANGES IN SYMPATHETIC SKIN POTENTIAL
Source: CMS coverage guidance
CPT 95922high
TESTING OF AUTONOMIC NERVOUS SYSTEM FUNCTION; VASOMOTOR ADRENERGIC INNERVATION (SYMPATHETIC ADRENERGIC FUNCTION), INCLUDING BEAT-TO-BEAT BLOOD PRESSURE AND R-R INTERVAL CHANGES DURING VALSALVA MANEUVER AND AT LEAST 5 MINUTES OF PASSIVE TILT
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 92651high
AUDITORY EVOKED POTENTIALS; FOR HEARING STATUS DETERMINATION, BROADBAND STIMULI, WITH INTERPRETATION AND REPORT
Source: CMS coverage guidance

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
G23.1

Common synonyms

Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]

Frequently asked questions

Code details

CodeG23.1
SystemICD10
Display nameProgressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]
ChapterDiseases of the nervous system (G00-G99)
BlockExtrapyramidal and movement disorders

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
OphthalmoplegiaPalsyPalsyParalysis, paralytic(complete) (incomplete)Paralysis, paralytic(complete) (incomplete)Steele-Richardson-Olszewski disease or syndromeWillige-Hunt disease or syndrome

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 G23.1 for Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] | HealthAssure