Syphilitic chancre NOS
Primary syphilis
Syphilis genitalia, primary
Syphilis, primary
The primary sore of syphilis, a painless indurated, eroded papule, occurring at the site of entry of the infection.
A51.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM A51.0 became effective on October 1, 2022.
This is the American ICD-10-CM version of A51.0 – other international versions of ICD-10 A51.0 may differ.