ICD-10 Code A52.00 – Cardiovascular syphilis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A52.00 – Cardiovascular syphilis, unspecified
What it is
A52.00 identifies cardiovascular damage caused by syphilis when the specific heart or vessel involvement is not documented. Use it for late syphilitic disease affecting the cardiovascular system without further detail.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe aortic involvement, aneurysm, aortic regurgitation, or other cardiovascular findings linked to tertiary syphilis.
When to use this code
Use A52.00 when the record clearly states cardiovascular syphilis but does not specify the exact manifestation. It also fits when provider documentation confirms syphilitic cardiovascular disease and no more precise code is supported. If the chart names a specific complication, code that condition instead.
Do not use for
Do not use this code for congenital syphilis, early syphilis, or nonspecific cardiovascular disease without a documented syphilitic cause. Check documentation if the provider only suspects syphilis-related heart disease.
Coding tip
Assign the most specific syphilis code available; use A52.00 only when the cardiovascular manifestation is documented but not further defined.