Primary genital syphilis
Billable / specific
A51.0 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Applicable to
- Syphilitic chancre NOS
Includes (from A51)
- diseases generally recognized as communicable or transmissible
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- carrier or suspected carrier of infectious disease (Z22.-) (from A51)
- certain localized infections - see body system-related chapters (from A51)
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-) (from A51)
- infectious and parasitic diseases specific to the perinatal period (P35-P39) (from A51)
- influenza and other acute respiratory infections (J00-J22) (from A51)
- human immunodeficiency virus [HIV] disease (B20) (from A51)
Use additional code
Add a code to identify the following, if applicable.
Also known as
- Syphilitic chancre NOS
- Bubo, syphilitic
- Chancre
- Chancre, urethra
- Lesion, primary
- Syphilis, syphilitic, bubo
- Syphilis, syphilitic, chancre
- Syphilis, syphilitic, chancre, Rollet's
- Syphilis, syphilitic, early, symptomatic, primary, except extragenital chancre
- Syphilis, syphilitic, genital
- Syphilis, syphilitic, penis
- Syphilis, syphilitic, primary
- Syphilis, syphilitic, primary, genital
- Syphilis, syphilitic, vagina
- Syphilis, syphilitic, vulva
- Ulcus, durum
Parent code
- A51Early syphilisHeader