ICD-10 Code A52.73 – Symptomatic late syphilis of other respiratory organs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A52.73 – Symptomatic late syphilis of other respiratory organs
What it is
This code identifies symptomatic late syphilis involving respiratory organs other than the lungs. Use it when late-stage syphilis has caused clinically evident disease in another respiratory structure.
Clinical signs
Clinical features vary; refer to documentation. Findings may include chronic inflammatory or destructive changes in a respiratory organ, with symptoms tied to the affected site rather than acute infection.
When to use this code
Use A52.73 when the record clearly states late syphilis with symptoms affecting another respiratory organ, and the provider documents the site. This code fits confirmed late manifestations, not suspected exposure or nonspecific respiratory complaints. Check documentation if the organ involved is unclear.
Do not use for
Do not use this code for early syphilis, latent syphilis, or respiratory symptoms without documented late syphilis. If the chart only notes syphilis elsewhere or an unspecified respiratory site, check documentation.
Coding tip
Verify both the late syphilis diagnosis and the specific respiratory organ before assigning A52.73.