ICD-10 Code
International Classification of Diseases, 10th Revision
Nov 21, 2018
  ICD-10 Code for Early syphilis, latent A51.5

A51.5 is a valid1 ICD 10 diagnosis code.

A51.5 is valid for submission for HIPAA-covered transactions.

Chapter 1 Certain infectious and parasitic diseases (A00-B99)
Section A50-A64 Infections with a predominantly sexual mode of transmission (A50-A64)
Category A51 Early syphilis

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
Inclusion Term
  • Syphilis (acquired) without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after infection.
See also ICD 10 code for

Related Terms to “Early syphilis, latent”

  • Syphilis, syphilitic(acquired) - A53.9
    • early - A51.9
      • latent(without manifestations) (less than 2 years after infection) - A51.5
        • negative spinal fluid test - A51.5
        • serological relapse after treatment - A51.5
        • serology positive - A51.5
    • latent - A53.0
      • early, or less than 2 years after infection - A51.5
      • positive serology(only finding) - A53.0
        • early, or less than 2 years after infection - A51.5
See the ICD-10-CM Coding Guidelines.

Questions related to A51.5 Early syphilis, latent

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.