A50.9
BillableCongenital syphilis, unspecified
Congenital syphilis, unspecified
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
Related Codes(8)
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
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(41)
SNOMED CT
- Congenital syphilis35742006
- Oral syphilis235062007
- Pericellular fibrosis of congenital syphilis235898000
- Treponema pallidum ELISA positive390880002
- Treponema pallidum detected by enzyme-linked immunosorbent assay390880002
- Treponema pallidum enzyme-linked immunosorbent assay positive390880002
- Syphilis test finding406115008
- Hypoplasia of enamel due to congenital syphilis703134008
- Syphilitic hypoplasia of enamel703134008
- Gingival disease caused by bacteria708055005
- Gingival disease caused by Treponema pallidum713251003
- Gingival syphilis713251003
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
Clinical Terms
- syphilis congenital
- Syphilis test finding
- Congenital syphilis (disorder)
- CONGEN SYPHILIS
- Syphilis, Congenital
- Hypoplasia of enamel due to congenital syphilis
- SYPHILIS CONGEN
- Unspecified congenital syphilis
- Congenital Treponema pallidum infection
- Gingival disease caused by Treponema pallidum
- Treponema pallidum ELISA positive
- Treponema pallidum detected by enzyme-linked immunosorbent assay
- Pericellular fibrosis of congenital syphilis
- Gingival disease caused by bacteria
- Treponema pallidum enzyme-linked immunosorbent assay positive
- Oral syphilis
- Gingival syphilis
- Syphilitic hypoplasia of enamel
Frequently Asked Questions
What is the ICD-10 code for congenital syphilis, unspecified?
The ICD-10-CM code for congenital syphilis, unspecified is A50.9. The full clinical description is "Congenital syphilis, unspecified". A50.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code A50.9 mean?
ICD-10-CM code A50.9 represents “Congenital syphilis, unspecified”. It is classified under Chapter 1: Certain Infectious and Parasitic Diseases and is a billable/specific code that can be used on a claim.
Is A50.9 a billable code?
Yes, A50.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is A50.9 in?
A50.9 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A50.9?
A50.9 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-).
Are additional codes required with A50.9?
Yes, when using A50.9, also report: resistance to antimicrobial drugs (Z16.-).
What SNOMED CT codes does A50.9 map to?
A50.9 maps to 8 SNOMED CT concepts: 35742006, 713251003, 708055005, 703134008, 235062007, and 3 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for A50.9?
A50.9 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 A50.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like congenital syphilis, unspecified 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 A50.9?
A50.9 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.