ICD-10 Code
International Classification of Diseases, 10th Revision
Aug 17, 2017
  ICD-10 Code for Early syphilis, unspecified A51.9

A51.9 is a valid1 ICD 10 diagnosis code.

A51.9 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.
See also ICD 10 code for

Related Terms to “Early syphilis, unspecified”

  • Syphilis, syphilitic(acquired) - A53.9
    • age under 2 years NOS — See also Syphilis, congenital, early
      • acquired - A51.9
    • early - A51.9
      • relapse(treated, untreated) - A51.9
      • symptomatic - A51.9
    • recently acquired, symptomatic - A51.9
See the 2017 ICD-10-CM Coding Guidelines.

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.