A53.9
BillableSyphilis, unspecified
Syphilis, unspecified
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Infection due to Treponema pallidum NOS
- Syphilis (acquired) NOS
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
- •syphilis NOS under two years of ageA50.2
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(1)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(82)
SNOMED CT
- Infection by Treponema pallidum76272004
- Lues76272004
- Luetic disease76272004
- Syphilis76272004
- Treponemal disease76272004
- Treponemal infection76272004
- Maternal syphilis during pregnancy, childbirth and the puerperium199154009
- Oral syphilis235062007
- Anetoderma238828009
- Atrophoderma maculatum238828009
- Secondary anetoderma238830006
- Acquired syphilis240555007
- Venereal disease in pregnancy274118001
- Treponema pallidum ELISA positive390880002
- Treponema pallidum detected by enzyme-linked immunosorbent assay390880002
- Treponema pallidum enzyme-linked immunosorbent assay positive390880002
- Anetoderma secondary to syphilis402952006
- Syphilis test finding406115008
- Gingival disease caused by bacteria708055005
- Gingival disease caused by Treponema pallidum713251003
- Gingival syphilis713251003
- Bacterial myelitis721245001
- Myelitis caused by bacterium721245001
- Myelitis caused by Treponema pallidum870293004
- Syphilitic myelitis870293004
- STD (sexually transmitted disease) in childbirth10759841000119105
- Sexually transmitted disease in childbirth10759841000119105
- Sexually transmitted infectious disease in mother complicating childbirth10759841000119105
- Syphilis in childbirth10759921000119107
- Syphilis in mother complicating childbirth10759921000119107
UMLS
- Acquired syphilisC0343674
- Acquired syphilis (disorder)C0343674
- Syphilis (acquired) NOSC0343674
- Great PoxC0039128
- Infection by Treponema pallidumC0039128
- LuesC0039128
- Luetic diseaseC0039128
- SyphilisC0039128
- Syphilis (disorder)C0039128
- Syphilis NOSC0039128
- Syphilis, unspecifiedC0039128
- Treponema pallidum infectionC0039128
- luesC0039128
- luetic diseaseC0039128
- syphilisC0039128
- Infection due to Treponema pallidum NOSC2893380
Clinical Terms
- Atrophoderma maculatum
- Anetoderma secondary to syphilis
- Syphilis NOS
- Infection due to Treponema pallidum NOS
- Secondary anetoderma
- Syphilis test finding
- Acquired syphilis (disorder)
- Infection by Treponema pallidum
- Venereal disease in pregnancy
- Bacterial myelitis
- Syphilis (disorder)
- Sexually transmitted disease in childbirth
- Great Pox
- Syphilis (acquired) NOS
- Syphilis in childbirth
- Treponemal disease
- luetic disease
- Syphilis in mother complicating childbirth
- Gingival disease caused by Treponema pallidum
- Treponema pallidum ELISA positive
- Syphilitic myelitis
- Treponema pallidum detected by enzyme-linked immunosorbent assay
- Anetoderma
- Gingival disease caused by bacteria
- Maternal syphilis during pregnancy, childbirth and the puerperium
- Treponema pallidum enzyme-linked immunosorbent assay positive
- STD (sexually transmitted disease) in childbirth
- Treponema pallidum infection
- Treponemal infection
- Acquired syphilis
- Oral syphilis
- Sexually transmitted infectious disease in mother complicating childbirth
- Myelitis caused by Treponema pallidum
- Gingival syphilis
- Lues
- Myelitis caused by bacterium
Frequently Asked Questions
What is the ICD-10 code for syphilis, unspecified?
The ICD-10-CM code for syphilis, unspecified is A53.9. The full clinical description is "Syphilis, unspecified". A53.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code A53.9 mean?
ICD-10-CM code A53.9 represents “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 A53.9 a billable code?
Yes, A53.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is A53.9 in?
A53.9 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A53.9?
A53.9 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-); and 1 more.
Are additional codes required with A53.9?
Yes, when using A53.9, also report: resistance to antimicrobial drugs (Z16.-).
What SNOMED CT codes does A53.9 map to?
A53.9 maps to 16 SNOMED CT concepts: 240555007, 238828009, 402952006, 721245001, 713251003, and 11 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for A53.9?
A53.9 is linked to 3 UMLS Concept Unique Identifiers: C0343674, C0039128, C2893380. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does A53.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like 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 A53.9?
A53.9 maps to the ICD-11 code: 1A6Z (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.