A51.46

What This Code Means

This is a bone disease caused by secondary syphilis, occurring when the syphilis infection spreads to the bones during the secondary stage of the disease. It causes inflammation and damage to the bone structure.

Coding Tips

• •Verify that the patient has documented secondary syphilis with bone involvement; do not use this code for primary or tertiary syphilis bone manifestations
• •This code should be used alongside the primary secondary syphilis code (A51) to fully capture the systemic nature of the infection