H74.399

What This Code Means

This code describes a condition where the small bones in the middle ear (ossicles) have developed problems or abnormalities that were not present at birth, but the specific ear affected is not documented. These tiny bones normally help transmit sound vibrations to the inner ear.

Coding Tips

• •Use this code only when the documentation does not specify which ear is affected; if laterality is documented, use H74.391 (right ear) or H74.392 (left ear) instead
• •This code is appropriate for acquired conditions only—if the abnormality is congenital, use a different code from the H74.0 series