ICD-10-CM 2027
ICD-10 code for Asymptomatic neurosyphilis
From the official ICD-10-CM alphabetic index entry “Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse) › asymptomatic”. Page updated September 29, 2026.
About coding Asymptomatic neurosyphilis
The ICD-10-CM code for Asymptomatic neurosyphilis is A52.2 (Asymptomatic neurosyphilis).
Within A52 (late syphilis), A52.2 is specifically for Asymptomatic neurosyphilis. Related codes cover cardiovascular and cerebrovascular syphilis (A52.0), symptomatic neurosyphilis (A52.1), neurosyphilis, unspecified (A52.3), other symptomatic late syphilis (A52.7), latent (A52.8) and unspecified (A52.9).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 097 (Non-Bacterial Infection of Nervous System Except Viral Meningitis with MCC, relative weight 3.8226), DRG 098 (Non-Bacterial Infection of Nervous System Except Viral Meningitis with CC, relative weight 2.2706) and DRG 099 (Non-Bacterial Infection of Nervous System Except Viral Meningitis without CC/MCC, relative weight 1.5256), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Asymptomatic neurosyphilis ICD-10 codes
What is the ICD-10 code for Asymptomatic neurosyphilis?
- A52.2 — Asymptomatic neurosyphilis.
Is A52.2 billable?
- Yes. A52.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A52.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A52.2 as a principal diagnosis.
Is A52.2 a CC or MCC?
- A52.2 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.