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A50Non-billableSave

A50 - Congenital syphilis

ICD-10-CM Chapter 1: Certain infectious and parasitic diseases · A50-A64 Infections with a predominantly sexual mode of transmission (A50-A64) · Top-level category · FY2027

Coding Guidance

A50 is a non-billable heading. Report one of the 9 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom A50-A64 Infections with a predominantly sexual mode of transmission (A50-A64)

Mutually exclusive: these conditions are never reported together with this code.

  • nonspecific and nongonococcal urethritis (N34.1)
  • Reiter's disease (M02.3-)
Excludes 2 — Not Included HereFrom A50-A64 Infections with a predominantly sexual mode of transmission (A50-A64)

Not part of this code; report both codes when the patient has both conditions.

  • human immunodeficiency virus [HIV] disease (B20)
IncludesFrom Chapter A00-B99

Conditions this code covers.

  • diseases generally recognized as communicable or transmissible
Excludes 2 — Not Included HereFrom Chapter A00-B99

Not part of this code; report both codes when the patient has both conditions.

  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • 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 CodeFrom Chapter A00-B99

Add a secondary code to identify the associated condition or cause when it is documented.

  • code to identify resistance to antimicrobial drugs (Z16.-)

More Specific Codes (9)

A50.0Early congenital syphilis, symptomatic→A50.1Early congenital syphilis, latent→A50.2Early congenital syphilis, unspecified→A50.3Late congenital syphilitic oculopathy→A50.4Late congenital neurosyphilis [juvenile neurosyphilis]→A50.5Other late congenital syphilis, symptomatic→A50.6Late congenital syphilis, latent→A50.7Late congenital syphilis, unspecified→A50.9Congenital syphilis, unspecified→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with A50.