ICD-10 Code A50.57 – Syphilitic saddle nose (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A50.57 – Syphilitic saddle nose
What it is
This code identifies a saddle nose deformity caused by syphilis. It reflects collapse of the nasal bridge from destructive disease, usually in the context of late or congenital infection.
Clinical signs
Typical findings include a depressed nasal bridge and visible nasal deformity. Clinical features vary; refer to documentation for evidence of syphilitic involvement.
When to use this code
Use this code when the provider documents saddle nose specifically attributed to syphilis. It may appear in a history of untreated or late syphilis, or in congenital cases with characteristic nasal collapse. Code the documented diagnosis, not just a general nasal deformity.
Do not use for
Do not use it for nonsyphilitic saddle nose from trauma, surgery, or other causes. Check documentation if the cause is not clearly linked to syphilis.
Coding tip
Assign A50.57 only when the record clearly links the deformity to syphilis.