A51.0

A51.0: Primary genital syphilis

Billable / specific codeICD-10-CM

A51.0 is a billable, specific ICD-10-CM code for primary genital syphilis. It is valid for submission on a claim.

Check A51.0 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Syphilitic chancre NOS

Other codes that can never be billed with A51.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

N77.0Ulceration of vulva in diseases classified elsewhere
N77.1Vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

A51.0 is named in 4 Medicare coverage policies: 4 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58747Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58761Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

Alphabetic index entries that lead here

Chancre(any genital site) (hard) (hunterian) (mixed) (primary) (seronegative) (seropositive) (syphilitic)
Bubo›syphilitic(primary)
Chancre›urethra
Lesion›primary
Syphilis, syphilitic›bubo(primary)
Syphilis, syphilitic›chancre(multiple)
Syphilis, syphilitic›genital(primary)
Syphilis, syphilitic›penis(chancre)
Syphilis, syphilitic›primary
Syphilis, syphilitic›vagina
Syphilis, syphilitic›vulva
Ulcus›durum(syphilitic)

Code history

Unchanged in every release from FY2024 to FY2027.