ICD-10 Code A52.72 – Syphilis of lung and bronchus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A52.72 – Syphilis of lung and bronchus
What it is
This code identifies syphilis affecting the lung or bronchus, usually as a late complication of Treponema pallidum infection. It is used when documentation specifically states pulmonary or bronchial involvement.
Clinical signs
Clinical features vary; refer to documentation. Reported findings may include respiratory symptoms and imaging abnormalities, but these are not specific. Confirm that the provider has identified syphilitic involvement of the lung or bronchus.
When to use this code
Use A52.72 when the record clearly documents syphilis of the lung, bronchus, or both. It may appear in cases of disseminated or late syphilis with thoracic involvement. If the site is not specified, check documentation before coding.
Do not use for
Do not use this code for pneumonia, bronchitis, or lung masses without documented syphilis. If the chart only says “syphilis” with no pulmonary site, code the documented form and site instead.
Coding tip
Verify the anatomic site and the provider’s wording; pulmonary involvement must be explicit for A52.72.