ICD-10-CM 2027
ICD-10 code for remission in sustained neurosyphilis
From the official ICD-10-CM alphabetic index entry “Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse) › remission in (sustained)”. Page updated September 29, 2026.
About coding remission in sustained neurosyphilis
The ICD-10-CM code for remission in sustained neurosyphilis is A52.3 (Neurosyphilis, unspecified).
Within A52, choose A52.3 (Neurosyphilis, unspecified) only when documentation doesn't support a more specific option: cardiovascular and cerebrovascular syphilis (A52.0), symptomatic neurosyphilis (A52.1), Asymptomatic neurosyphilis (A52.2), 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 056 (Degenerative Nervous System Disorders with MCC, relative weight 2.2655) and DRG 057 (Degenerative Nervous System Disorders without MCC, relative weight 1.2838), 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 remission in sustained neurosyphilis ICD-10 codes
What is the ICD-10 code for remission in sustained neurosyphilis?
- A52.3 — Neurosyphilis, unspecified.
Is A52.3 billable?
- Yes. A52.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A52.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A52.3 as a principal diagnosis.
Is A52.3 a CC or MCC?
- A52.3 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.