A50.6

Billable

ChapterA00–B99

Ranksubcategory

Official Description

Late congenital syphilis, latent

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

Instructional Notes

Includes

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

General instructions are available for the parent sections:

View CH1 Notes View A50-A64 Notes

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)

A50-A64Infections with a predominantly sexual mode of transmission (A50-A64)

A50Congenital syphilis

A50.6Late congenital syphilis, latent

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A50.6:

blockA50-A64

Infections with a predominantly sexual mode of transmission (A50-A64)

View context instructions

chapterCH1

Certain infectious and parasitic diseases (A00-B99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to A50.6. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

3 raw paths

Syphilis, syphilitic (acquired)3 unique routes

congenital(3 variants)

late, or 2 years or more after birth NEC(3 variants)

latent (without manifestations)→A50.6(3 variants)

negative spinal fluid test→A50.6

serology positive→A50.6