A51.5
Early syphilis, latent
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
Syphilis (acquired) without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after infection.
diseases generally recognized as communicable or transmissible
certain localized infections - see body system-related chapters
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)
code to identify resistance to antimicrobial drugs (Z16.-)
Official Guidelines for A51.5
FY 2026 ›Subsections
- I.C.1.aHuman Immunodeficiency Virus (HIV) Infections
- I.C.1.bInfectious agents as the cause of diseases classified to other chapters
- I.C.1.cInfections resistant to antibiotics
- I.C.1.dSepsis, Severe Sepsis, and Septic Shock Infections resistant to antibiotics
- I.C.1.eMethicillin Resistant Staphylococcus aureus (MRSA) Conditions
- I.C.1.fZika virus infections
- I.C.1.gCoronavirus infections
Find A51.5 in the alphabetic index
6 index paths lead to this code
- Syphilis, syphilitic › early › latent
- Syphilis, syphilitic › latent › early, or less than 2 years after infection
- Syphilis, syphilitic › early › latent › negative spinal fluid test
- Syphilis, syphilitic › early › latent › serological relapse after treatment
- Syphilis, syphilitic › early › latent › serology positive
- Syphilis, syphilitic › latent › positive serology › early, or less than 2 years after infection