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H74.311

Billable

Ankylosis of ear ossicles, right ear

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Stiffening and immobility of the tiny bones in the right middle ear due to abnormal bone growth, reducing hearing ability.

Coding Tips

  • •This code is specific to the right ear; use H74.312 for left ear
  • •Ankylosis represents fusion or fixation of the ossicles, which is different from discontinuity

Code Hierarchy

└H74Other disorders of middle ear mastoid└H74.3Other acquired abnormalities of ear ossicles└H74.31Ankylosis of ear ossicles└H74.311Ankylosis of ear ossicles, right ear
└H74.311Ankylosis of ear ossicles, right ear

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