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ICD10BillableValid for clinical use

ICD-10 Code A50.44: Late congenital syphilitic optic nerve atrophy

A50.44 is a billable ICD-10 diagnosis code used to classify Late congenital syphilitic optic nerve atrophy 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 Certain infectious and parasitic diseases (A00-B99).

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 Certain infectious and parasitic diseases (A00-B99).

When is it used?

  • May be used when a clinician documents late congenital syphilitic optic nerve atrophy 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
1Certain infectious and parasitic diseases (A00-B99)
block
A50-A64Infections with a predominantly sexual mode of transmission
category
A50Congenital syphilis
category
A50.4Late congenital neurosyphilis [juvenile neurosyphilis]
currentA50.4

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

Infectious Disease SpecialistGeneral Physician

Coverage-related procedures and services

CPT 95886high
NEEDLE ELECTROMYOGRAPHY, EACH EXTREMITY, WITH RELATED PARASPINAL AREAS, WHEN PERFORMED, DONE WITH NERVE CONDUCTION, AMPLITUDE AND LATENCY/VELOCITY STUDY; COMPLETE, FIVE OR MORE MUSCLES STUDIED, INNERVATED BY THREE OR MORE NERVES OR FOUR OR MORE SPINAL LEVELS (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 95885high
NEEDLE ELECTROMYOGRAPHY, EACH EXTREMITY, WITH RELATED PARASPINAL AREAS, WHEN PERFORMED, DONE WITH NERVE CONDUCTION, AMPLITUDE AND LATENCY/VELOCITY STUDY; LIMITED (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 95887high
NEEDLE ELECTROMYOGRAPHY, NON-EXTREMITY (CRANIAL NERVE SUPPLIED OR AXIAL) MUSCLE(S) DONE WITH NERVE CONDUCTION, AMPLITUDE AND LATENCY/VELOCITY STUDY (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 95860high
NEEDLE ELECTROMYOGRAPHY; 1 EXTREMITY WITH OR WITHOUT RELATED PARASPINAL AREAS
Source: CMS coverage guidance
CPT 95861high
NEEDLE ELECTROMYOGRAPHY; 2 EXTREMITIES WITH OR WITHOUT RELATED PARASPINAL AREAS
Source: CMS coverage guidance
CPT 95863high
NEEDLE ELECTROMYOGRAPHY; 3 EXTREMITIES WITH OR WITHOUT RELATED PARASPINAL AREAS
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Late congenital syphilitic optic nerve atrophy

Frequently asked questions

Code details

CodeA50.44
SystemICD10
Display nameLate congenital syphilitic optic nerve atrophy
ChapterCertain infectious and parasitic diseases (A00-B99)
BlockInfections with a predominantly sexual mode of transmission

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Atrophy, atrophic(of)Atrophy, atrophic(of)

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.