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ICD-10-CM Codes
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A00-B99
Certain infectious and parasitic diseases
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A50-A64
Infections with a predominantly sexual mode of transmission
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A50-
Congenital syphilis
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2021 ICD-10-CM Diagnosis Code A50.40
2021 ICD-10-CM Diagnosis Code A50.40
Late congenital neurosyphilis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- A50.40 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM A50.40 became effective on October 1, 2020.
- This is the American ICD-10-CM version of A50.40 - other international versions of ICD-10 A50.40 may differ.
Applicable To- Juvenile neurosyphilis NOS
The following code(s) above
A50.40 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
A50.40:
- A00-B99
2021 ICD-10-CM Range A00-B99
Certain infectious and parasitic diseasesIncludes- diseases generally recognized as communicable or transmissible
Type 1 Excludes- certain localized infections - see body system-related chapters
Type 2 Excludes- carrier or suspected carrier of infectious disease (Z22.-)
- 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- code to identify resistance to antimicrobial drugs (Z16.-)
- A50-A64
2021 ICD-10-CM Range A50-A64
Infections with a predominantly sexual mode of transmissionType 1 Excludes- human immunodeficiency virus [HIV] disease (B20)
- nonspecific and nongonococcal urethritis (N34.1)
- Reiter's disease (M02.3-)
- A50.4
ICD-10-CM Diagnosis Code A50.4
Late congenital neurosyphilis [juvenile neurosyphilis]
2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
Use Additional- code to identify any associated mental disorder
- Late congenital neurosyphilis
- Neurosyphilis, juvenile
ICD-10-CM A50.40 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
- 097 Non-bacterial infection of nervous system except viral meningitis with mcc
- 098 Non-bacterial infection of nervous system except viral meningitis with cc
- 099 Non-bacterial infection of nervous system except viral meningitis without cc/mcc
Convert A50.40 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
- Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse) A52.3
ICD-10-CM Diagnosis Code A52.3
Neurosyphilis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Gumma (syphilitic)
- Syphilis (late)
- Syphiloma
- congenital A50.40
- juvenile A50.40 (asymptomatic) (meningeal)
- Syphilis, syphilitic (acquired) A53.9
ICD-10-CM Diagnosis Code A53.9
Syphilis, unspecified
2016 2017 2018 2019 2020 2021 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)
- central nervous system (late) (recurrent) (relapse) (tertiary) A52.3
ICD-10-CM Diagnosis Code A52.3
Neurosyphilis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Gumma (syphilitic)
- Syphilis (late)
- Syphiloma
- congenital A50.40
- juvenile A50.40
ICD-10-CM Codes Adjacent To A50.40
A50.08 Early visceral congenital syphilis
A50.09 Other early congenital syphilis, symptomatic
A50.1 Early congenital syphilis, latent
A50.2 Early congenital syphilis, unspecified
A50.3 Late congenital syphilitic oculopathy
A50.31 Late congenital syphilitic interstitial keratitis
A50.32 Late congenital syphilitic chorioretinitis
A50.39 Other late congenital syphilitic oculopathy
A50.4 Late congenital neurosyphilis [juvenile neurosyphilis]
A50.40
Late congenital neurosyphilis, unspecified
A50.41 Late congenital syphilitic meningitis
A50.42 Late congenital syphilitic encephalitis
A50.43 Late congenital syphilitic polyneuropathy
A50.44 Late congenital syphilitic optic nerve atrophy
A50.45 Juvenile general paresis
A50.49 Other late congenital neurosyphilis
A50.5 Other late congenital syphilis, symptomatic
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
