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ICD-10-CM Codes
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A00-B99
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A50-A64
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A51-
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2023 ICD-10-CM Diagnosis Code A51.9
2023 ICD-10-CM Diagnosis Code A51.9
Early syphilis, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- A51.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM A51.9 became effective on October 1, 2022.
- This is the American ICD-10-CM version of A51.9 - other international versions of ICD-10 A51.9 may differ.
The following code(s) above
A51.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
A51.9:
- 867 Other infectious and parasitic diseases diagnoses with mcc
- 868 Other infectious and parasitic diseases diagnoses with cc
- 869 Other infectious and parasitic diseases diagnoses without cc/mcc
Convert A51.9 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- Syphilis, syphilitic (acquired) A53.9
ICD-10-CM Diagnosis Code A53.9
Syphilis, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Infection due to Treponema pallidum NOS
- Syphilis (acquired) NOS
Type 1 Excludes- syphilis NOS under two years of age (A50.2)
ICD-10-CM Codes Adjacent To A51.9
A51.39 Other secondary syphilis of skin
A51.4 Other secondary syphilis
A51.41 Secondary syphilitic meningitis
A51.42 Secondary syphilitic female pelvic disease
A51.43 Secondary syphilitic oculopathy
A51.44 Secondary syphilitic nephritis
A51.45 Secondary syphilitic hepatitis
A51.46 Secondary syphilitic osteopathy
A51.49 Other secondary syphilitic conditions
A51.5 Early syphilis, latent
A51.9
Early syphilis, unspecified
A52.0 Cardiovascular and cerebrovascular syphilis
A52.00 Cardiovascular syphilis, unspecified
A52.01 Syphilitic aneurysm of aorta
A52.03 Syphilitic endocarditis
A52.04 Syphilitic cerebral arteritis
A52.05 Other cerebrovascular syphilis
A52.06 Other syphilitic heart involvement
A52.09 Other cardiovascular syphilis
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
