All ICD10 Codes
A52Non-billable

Late syphilis

Certain Infectious and Parasitic Diseases·Infections with a predominantly sexual mode of transmission (A50-A64)·category·FY 2026

Use a more specific code (4 billable, 3 non-billable)
A52.0Cardiovascular and cerebrovascular syphilishas subcodesA52.1Symptomatic neurosyphilishas subcodesA52.2Asymptomatic neurosyphilisA52.3Neurosyphilis, unspecifiedA52.7Other symptomatic late syphilishas subcodesA52.8Late syphilis, latentA52.9Late syphilis, unspecified

CH1 Parent Instructions

Includes
  • diseases generally recognized as communicable or transmissible
Excludes1(Not coded here. Use a different code.)
  • certain localized infections - see body system-related chapters
Excludes2(Not included here. Code separately if applicable.)
  • 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
  • code to identify resistance to antimicrobial drugs (Z16.-)

A50-A64 Parent Instructions

Excludes1(Not coded here. Use a different code.)
  • nonspecific and nongonococcal urethritis (N34.1)
  • Reiter's disease (M02.3-)
Excludes2(Not included here. Code separately if applicable.)
  • human immunodeficiency virus [HIV] disease (B20)

Clinical Hierarchy

BillableHas subcodes
CH1Certain infectious and parasitic diseases (A00-B99)
A50-A64Infections with a predominantly sexual mode of transmission (A50-A64)
A52Late syphilisNot billable
A52.0Cardiovascular and cerebrovascular syphilisSubcodes
A52.1Symptomatic neurosyphilisSubcodes
A52.2Asymptomatic neurosyphilisBillable
A52.3Neurosyphilis, unspecifiedBillable
A52.7Other symptomatic late syphilisSubcodes
A52.8Late syphilis, latentBillable
A52.9Late syphilis, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.