A51.39 Other secondary syphilis of skin
The ICD-10-CM code for Other secondary syphilis of skin is A51.39 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- A50-A64: Infections with a predominantly sexual mode of transmission (A50-A64)
- Category A51
- 18 codes (15 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to A51.39:
- Syphilid
- Rupia (syphilitic)
- Syphilis, syphilitic (acquired) › leukoderma
- Syphilis, syphilitic (acquired) › lip
- Syphilis, syphilitic (acquired) › atrophoderma maculatum
- Leukoderma, leukodermia NEC › syphilitic
- Mucous › patches (syphilitic)
- Patches › mucous (syphilitic)
Inclusion Terms
- Syphilitic leukoderma
- Syphilitic mucous patch
U.S. Hospital Utilization
- An estimated 160 U.S. inpatient stays in 2023 included A51.39 among the documented diagnoses.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
HIV Infections (TOC entry)a. Human Immunodeficiency Virus (HIV) Infections .............................................................. 19
Infectious agents causing diseases in other chapters (TOC)b. Infectious agents as the cause of diseases classified to other chapters ................................. 22
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026