A52.79Other symptomatic late syphilis

A52.79 is the ICD-10-CM diagnosis code for other symptomatic late syphilis. It belongs to category A52 (late syphilis), block A50-A64 (infections with a predominantly sexual mode of transmission) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within A52.7, choose A52.79 (Other symptomatic late syphilis) only when documentation doesn't support a more specific option: late syphilitic oculopathy (A52.71), syphilis of lung and bronchus (A52.72), symptomatic late syphilis of other respiratory organs (A52.73), syphilis of liver and other viscera (A52.74), syphilis of kidney and ureter (A52.75), other genitourinary symptomatic late syphilis (A52.76), syphilis of bone and joint (A52.77) and syphilis of other musculoskeletal tissue (A52.78).

Don't report A52.79 together with the conditions in its Excludes1 note: syphilitic leukoderma (secondary) (A51.39).

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 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC, relative weight 2.1859), DRG 868 (Other Infectious and Parasitic Diseases Diagnoses with CC, relative weight 1.0235) and DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC, relative weight 0.6787), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 095.8 (other specified forms of late symptomatic syphilis) and 095.9 (late symptomatic syphilis, unspecified).