H74.31 Ankylosis of ear ossicles

Non-billable header with 4 child codes.

Applies from H74 Other disorders of middle ear mastoid

Excludes2 (not included here)

• mastoiditis (H70.-)

Codes under H74.31

• H74.311 Ankylosis of ear ossicles, right ear
• H74.312 Ankylosis of ear ossicles, left ear
• H74.313 Ankylosis of ear ossicles, bilateral
• H74.319 Ankylosis of ear ossicles, unspecified ear

Diagnosis Index entries for H74.31

• Ankylosis (fibrous) (osseous) (joint) › ear ossicles

Nearby codes

• H74.20 Discontinuity and dislocation of ear ossicles, unspecified ear
• H74.21 Discontinuity and dislocation of right ear ossicles
• H74.22 Discontinuity and dislocation of left ear ossicles
• H74.23 Discontinuity and dislocation of ear ossicles, bilateral
• H74.3 Other acquired abnormalities of ear ossicles
• H74.31 Ankylosis of ear ossicles (this code)
• H74.311 Ankylosis of ear ossicles, right ear
• H74.312 Ankylosis of ear ossicles, left ear
• H74.313 Ankylosis of ear ossicles, bilateral
• H74.319 Ankylosis of ear ossicles, unspecified ear
• H74.32 Partial loss of ear ossicles