ICD10BillableValid for clinical use
ICD-10 Code A50.1: Early congenital syphilis, latent
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 Certain infectious and parasitic diseases (A00-B99).
When is it used?
- May be used when a clinician documents early congenital syphilis, latent 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
currentA50
Official coding notes
Inclusion terms
- Congenital syphilis without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after birth.
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 PhysicianENT Specialist
Related codes
A50.0Early congenital syphilis, symptomaticcategoryA50.2Early congenital syphilis, unspecifiedcodeA50.3Late congenital syphilitic oculopathycategoryA50.4Late congenital neurosyphilis [juvenile neurosyphilis]categoryA50.5Other late congenital syphilis, symptomaticcategoryA50.6Late congenital syphilis, latentcodeA50.7Late congenital syphilis, unspecifiedcodeA50.9Congenital syphilis, unspecifiedcode
Sibling codes
A50.0Early congenital syphilis, symptomaticA50.2Early congenital syphilis, unspecifiedbillableA50.3Late congenital syphilitic oculopathyA50.4Late congenital neurosyphilis [juvenile neurosyphilis]A50.5Other late congenital syphilis, symptomaticA50.6Late congenital syphilis, latentbillableA50.7Late congenital syphilis, unspecifiedbillableA50.9Congenital syphilis, unspecifiedbillable
Coverage-related procedures and services
CPT 11720high
DEBRIDEMENT OF NAIL(S) BY ANY METHOD(S); 1 TO 5
Source: CMS coverage guidance
CPT 11721high
DEBRIDEMENT OF NAIL(S) BY ANY METHOD(S); 6 OR MORE
Source: CMS coverage guidance
CPT 11056high
PARING OR CUTTING OF BENIGN HYPERKERATOTIC LESION (EG, CORN OR CALLUS); 2 TO 4 LESIONS
Source: CMS coverage guidance
CPT 11057high
PARING OR CUTTING OF BENIGN HYPERKERATOTIC LESION (EG, CORN OR CALLUS); MORE THAN 4 LESIONS
Source: CMS coverage guidance
CPT 11055high
PARING OR CUTTING OF BENIGN HYPERKERATOTIC LESION (EG, CORN OR CALLUS); SINGLE LESION
Source: CMS coverage guidance
HCPCS G0127high
TRIMMING OF DYSTROPHIC NAILS, ANY NUMBER
Source: CMS coverage guidance
Mapped diagnoses and classifications
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
A50.1
Common synonyms
Early congenital syphilis, latent
Frequently asked questions
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.