ICD-10 Code A52.01 – Syphilitic aneurysm of aorta (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A52.01 – Syphilitic aneurysm of aorta
What it is
This code identifies an aneurysm of the aorta caused by syphilis. Use it when the record links the aortic aneurysm to syphilitic infection, usually as a late complication.
Clinical signs
Clinical features may include chest or back pain, pulsatile mass, or imaging evidence of aortic dilation. Clinical features vary; refer to documentation.
When to use this code
Use A52.01 when the provider documents syphilitic aortitis or syphilis-related aneurysm of the aorta. It may also apply when the diagnosis is confirmed by imaging, pathology, or specialist assessment and clearly attributed to syphilis.
Do not use for
Do not use this code for aortic aneurysm from other causes, such as atherosclerosis or trauma. If the chart does not clearly connect the aneurysm to syphilis, check documentation.
Coding tip
Look for explicit wording tying the aneurysm to syphilis before assigning A52.01.