- A51.5 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM A51.5 became effective on October 1, 2022.
- This is the American ICD-10-CM version of A51.5 – other international versions of ICD-10 A51.5 may differ.
ICD-10-CM A51.5 is grouped within Diagnostic Related Group(s):
- 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
Applicable To
- Syphilis (acquired) without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after infection.
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 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
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to A51.5:
- latent (without manifestations) (less than 2 years after infection) > early A51.9
- negative spinal fluid test > latent (without manifestations) (less than 2 years after infection) A51.5
- serological relapse after treatment > latent (without manifestations) (less than 2 years after infection) A51.5
- serology positive > latent (without manifestations) (less than 2 years after infection) A51.5
- early, or less than 2 years after infection > latent A53.0
- early, or less than 2 years after infection > positive serology (only finding) A53.0