Syphilis of kidney

This code represents renal involvement due to syphilis, a sexually transmitted infection caused by the bacterium Treponema pallidum. Syphilitic kidney disease can manifest as various forms of glomerulonephritis, nephrotic syndrome, or acute kidney injury, typically occurring during the secondary or tertiary stages of the infection.

Use this code when documentation clearly indicates a diagnosis of kidney disease directly attributed to syphilis. This includes conditions like syphilitic glomerulonephritis, nephrotic syndrome secondary to syphilis, or acute kidney injury where syphilis is identified as the underlying cause. Physician documentation must explicitly link the kidney pathology to the syphilitic infection.

• Always code the underlying syphilis (e.g., 091.x, 092.x, 095.x) as the primary diagnosis, followed by any specific manifestations of kidney disease if separately documented.
• Ensure documentation specifies "syphilitic" kidney involvement; do not use for general kidney disease in a patient with syphilis without a clear causal link.
• Distinguish from other forms of infectious or immune-mediated kidney disease; the syphilitic etiology must be confirmed.