A50.6

✓ Billable

Late congenital syphilis, latent

Certain infectious and parasitic diseases (A00-B99)

Also Known As

Congenital syphilis without clinical manifestations, with positive serological reaction and negative spinal fluid test, two years or more after birth.

✓ No additional coding notes for A50.6

Clinical Description

ICD-10-CM code A50.6 represents late congenital syphilis, latent. This code falls under the Certain infectious and parasitic diseases (A00-B99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code A50.6?

ICD-10-CM code A50.6 is "Late congenital syphilis, latent". It belongs to the category: Certain infectious and parasitic diseases (A00-B99).

Is A50.6 a billable ICD-10 code?

Yes, A50.6 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Related Codes in A50

Other codes in the same category that may be relevant for differential coding:

A50.0Early congenital syphilis, symptomatic A50.1Early congenital syphilis, latent A50.2Early congenital syphilis, unspecified A50.3Late congenital syphilitic oculopathy A50.4Late congenital neurosyphilis [juvenile neurosyphilis]A50.5Other late congenital syphilis, symptomatic A50.7Late congenital syphilis, unspecified A50.9Congenital syphilis, unspecified

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Code Information

CodeA50.6

BillableYes

ParentA50

CategoryCertain infectious and parasitic diseases (A00-B99)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)