2020 ICD-10-CM Diagnosis Code A51.2

Primary syphilis of other sites

    2016 2017 2018 2019 2020 Billable/Specific Code
  • A51.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM A51.2 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of A51.2 - other international versions of ICD-10 A51.2 may differ.
The following code(s) above A51.2 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to A51.2:
  • A00-B99
    2020 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
  • A50-A64
    2020 ICD-10-CM Range A50-A64

    Infections with a predominantly sexual mode of transmission

    Type 1 Excludes
    • human immunodeficiency virus [HIV] disease (B20)
    • nonspecific and nongonococcal urethritis (N34.1)
    • Reiter's disease (M02.3-)
    Infections with a predominantly sexual mode of transmission
Approximate Synonyms
  • Primary syphilis of fingers
  • Primary syphilis of tonsils
  • Syphilis finger, primary
  • Syphilis of tonsil, primary
ICD-10-CM A51.2 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 867 Other infectious and parasitic diseases diagnoses with mcc
  • 868 Other infectious and parasitic diseases diagnoses with cc
  • 869 Other infectious and parasitic diseases diagnoses without cc/mcc

Convert A51.2 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to A51.2:
  • Chancre (any genital site) (hard) (hunterian) (mixed) (primary) (seronegative) (seropositive) (syphilitic) A51.0
    ICD-10-CM Diagnosis Code A51.0

    Primary genital syphilis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Syphilitic chancre NOS
    • soft A57
      ICD-10-CM Diagnosis Code A57

      Chancroid

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Ulcus molle
      • palate A51.2
    • conjunctiva NEC A51.2
    • extragenital A51.2
    • eyelid A51.2
    • lip A51.2
    • nipple A51.2
    • palate, soft A51.2
  • Induration, indurated
  • Syphilis, syphilitic (acquired) A53.9
    ICD-10-CM Diagnosis Code A53.9

    Syphilis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Infection due to Treponema pallidum NOS
    • Syphilis (acquired) NOS
    Type 1 Excludes
    • syphilis NOS under two years of age (A50.2)
    • chancre (multiple) A51.0
      ICD-10-CM Diagnosis Code A51.0

      Primary genital syphilis

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Syphilitic chancre NOS
      • extragenital A51.2
    • early A51.9
      ICD-10-CM Diagnosis Code A51.9

      Early syphilis, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • symptomatic A51.9
        ICD-10-CM Diagnosis Code A51.9

        Early syphilis, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code
        • extragenital chancre A51.2
    • lip A51.39
      ICD-10-CM Diagnosis Code A51.39

      Other secondary syphilis of skin

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Syphilitic leukoderma
      • Syphilitic mucous patch
      Type 1 Excludes
      • late syphilitic leukoderma (A52.79)
      • chancre A51.2 (primary)
    • primary A51.0
      ICD-10-CM Diagnosis Code A51.0

      Primary genital syphilis

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Syphilitic chancre NOS
      • extragenital chancre NEC A51.2
      • fingers A51.2
      • lip A51.2
      • specified site NEC A51.2
      • tonsils A51.2
    • tonsil (lingual) (late) A52.73
      ICD-10-CM Diagnosis Code A52.73

      Symptomatic late syphilis of other respiratory organs

        2016 2017 2018 2019 2020 Billable/Specific Code
      • primary A51.2
  • Ulcus - see also Ulcer
    • durum (syphilitic) A51.0
      ICD-10-CM Diagnosis Code A51.0

      Primary genital syphilis

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Syphilitic chancre NOS
      • extragenital A51.2

ICD-10-CM Codes Adjacent To A51.2
A50.55 Late congenital syphilitic arthropathy
A50.56 Late congenital syphilitic osteochondropathy
A50.57 Syphilitic saddle nose
A50.59 Other late congenital syphilis, symptomatic
A50.6 Late congenital syphilis, latent
A50.7 Late congenital syphilis, unspecified
A50.9 Congenital syphilis, unspecified
A51 Early syphilis
A51.0 Primary genital syphilis
A51.1 Primary anal syphilis
A51.2 Primary syphilis of other sites
A51.3 Secondary syphilis of skin and mucous membranes
A51.31 Condyloma latum
A51.32 Syphilitic alopecia
A51.39 Other secondary syphilis of skin
A51.4 Other secondary syphilis
A51.41 Secondary syphilitic meningitis
A51.42 Secondary syphilitic female pelvic disease
A51.43 Secondary syphilitic oculopathy
A51.44 Secondary syphilitic nephritis
A51.45 Secondary syphilitic hepatitis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.