2024 ICD-10-CM Diagnosis Code A51.0

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Primary genital syphilis

  • A51.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM A51.0 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A51.0 – other international versions of ICD-10 A51.0 may differ.

Applicable To

  • Syphilitic chancre NOS

The following code(s) above A51.0 contain annotation back-references

 that may be applicable to A51.0:

  • A00-B99  Certain infectious and parasitic diseases
  • A50-A64  Infections with a predominantly sexual mode of transmission

Approximate Synonyms

  • Primary syphilis
  • Syphilis genitalia, primary
  • Syphilis, primary

Clinical Information

  • The primary sore of syphilis, a painless indurated, eroded papule, occurring at the site of entry of the infection.

ICD-10-CM A51.0 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 727 Inflammation of the male reproductive system with mcc
  • 728 Inflammation of the male reproductive system without mcc
  • 742 Uterine and adnexa procedures for non-malignancy with cc/mcc
  • 743 Uterine and adnexa procedures for non-malignancy without cc/mcc
  • 757 Infections, female reproductive system with mcc
  • 758 Infections, female reproductive system with cc
  • 759 Infections, female reproductive system without cc/mcc

Convert A51.0 to ICD-9-CMCode 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
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Code annotations containing back-references to A51.0:

Diagnosis Index entries containing back-references to A51.0:

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