Billable / Specific Code
ICD-10-CM A51.39 is the diagnosis code for Other secondary syphilis of skin. This code falls under the section "Infections with a predominantly sexual mode of transmission" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as A51.39. They are mutually exclusive:
Understanding where A51.39 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, A51.39 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
A51.39 is the ICD-10-CM diagnosis code for "Other secondary syphilis of skin". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of A51.39 is A51.3 ("Secondary syphilis of skin and mucous membranes"). A51.39 provides a more specific classification within this category.
A51.39 is located in Section A50-A64 — "Infections with a predominantly sexual mode of transmission" within Chapter 1 of the ICD-10-CM Tabular List.
Use A51.39 when the patients documented diagnosis matches "Other secondary syphilis of skin" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other secondary syphilis of skin is A51.39.
Yes, A51.39 can be used as a primary diagnosis code since it is billable and specific.
A51.39 is in Chapter 1 of the ICD-10-CM Tabular List.
Type 1 Excludes for A51.39 include: late syphilitic leukoderma (A52.79).
Yes, A51.39 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.