What does ICD-10 code A51.43 mean?

ICD-10 code A51.43 is the standardized code used for secondary syphilitic oculopathy in medical records and coding systems.

When is ICD-10 code A51.43 used?

Doctors, hospitals, and insurers may use ICD-10 code A51.43 when recording secondary syphilitic oculopathy in a standardized format.

Does ICD-10 code A51.43 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10BillableValid for clinical use

ICD-10 Code A51.43: Secondary syphilitic oculopathy

Name: ICD-10 Code A51.43: Secondary syphilitic oculopathy
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:00:32.705Z

A51.43 is a billable ICD-10 diagnosis code used to classify Secondary syphilitic oculopathy 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).

Reviewed by HealthAssure Clinical TeamUpdated 21 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 Certain infectious and parasitic diseases (A00-B99).

When is it used?

May be used when a clinician documents secondary syphilitic oculopathy 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

Official coding notes

Inclusion terms

Secondary syphilitic chorioretinitis
Secondary syphilitic iridocyclitis, iritis
Secondary syphilitic uveitis

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

Sibling codes

A51.41Secondary syphilitic meningitisbillable A51.42Secondary syphilitic female pelvic diseasebillable A51.44Secondary syphilitic nephritisbillable A51.45Secondary syphilitic hepatitisbillable A51.46Secondary syphilitic osteopathybillable A51.49Other secondary syphilitic conditionsbillable

Coding guidelines

Common synonyms

Secondary syphilitic oculopathy

Frequently asked questions

Code details

CodeA51.43

SystemICD10

Display nameSecondary syphilitic oculopathy

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

ChorioretinitisChorioretinitisIridocyclitisIridocyclitisIritisOculopathyRetinitisSyphilis, syphilitic(acquired)Syphilis, syphilitic(acquired)Syphilis, syphilitic(acquired)Syphilis, syphilitic(acquired)Syphilis, syphilitic(acquired)

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.