ICD-10-CM A51.3: Secondary syphilis of skin and mucous membranes

ICD-10-CM Diagnosis Code (2025)

Official Description for A51.3

Secondary syphilis of skin and mucous membranes

Coding Notes & Guidelines for A51.3

Excludes1: Not Coded Here

late syphilitic leukoderma (A52.79)

Inclusion Terms
  • Syphilitic leukoderma
  • Syphilitic mucous patch

Parent Code (Less Specific):

About ICD-10-CM Code A51.3 (Secondary syphilis of skin and mucous membranes)

ICD-10-CM code A51.3 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM A51.3 became effective on October 1, 2024.

This page provides detailed information about A51.3 - Secondary syphilis of skin and mucous membranes. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Secondary syphilis of skin and mucous membranes.