A50
Non-billableCongenital syphilis
Congenital syphilis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- certain localized infections - see body system-related chapters
- •nonspecific and nongonococcal urethritisN34.1
- •Reiter's diseaseM02.3
Excludes 2
Conditions not included here, but the patient may have both
- •carrier or suspected carrier of infectious diseaseZ22
- •infectious and parasitic diseases complicating pregnancy, childbirth and the puerperiumO98
- •infectious and parasitic diseases specific to the perinatal periodP35-P39
- •influenza and other acute respiratory infectionsJ00-J22
- •human immunodeficiency virus [HIV] diseaseB20
Use Additional Code
Additional codes that should follow this code
Child 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
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(11)
UMLS
- CONGEN SYPHILISC0039131
- Congenital SyphilisC0039131
- Congenital Treponema pallidum infectionC0039131
- Congenital syphilisC0039131
- Congenital syphilis (disorder)C0039131
- Congenital syphilis, unspecifiedC0039131
- SYPHILIS CONGENC0039131
- Syphilis, CongenitalC0039131
- Unspecified congenital syphilisC0039131
- congenital syphilisC0039131
- syphilis congenitalC0039131
Frequently Asked Questions
What is the ICD-10 code for congenital syphilis?
The ICD-10-CM code for congenital syphilis is A50. The full clinical description is "Congenital syphilis". A50 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code A50 mean?
ICD-10-CM code A50 represents “Congenital syphilis”. It is classified under Chapter 1: Certain Infectious and Parasitic Diseases and is a non-billable header code. Use a more specific child code for billing purposes.
Is A50 a billable code?
No, A50 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 9 child codes under A50.
What chapter is A50 in?
A50 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A50?
A50 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters; nonspecific and nongonococcal urethritis (N34.1); Reiter's disease (M02.3-).
What are the subcategories under A50?
A50 has 9 child codes, including: A50.0 (Early congenital syphilis, symptomatic), A50.1 (Early congenital syphilis, latent), A50.2 (Early congenital syphilis, unspecified), A50.3 (Late congenital syphilitic oculopathy), and 5 more.
Are additional codes required with A50?
Yes, when using A50, also report: resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for A50?
A50 is linked to 1 UMLS Concept Unique Identifier: C0039131. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does A50 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like congenital syphilis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of A50?
A50 maps to the ICD-11 code: 1A60.Z (Congenital syphilis, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.