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H74.312

Billable

Ankylosis of ear ossicles, left 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 left middle ear due to abnormal bone growth, reducing hearing ability.

Coding Tips

  • •This code is specific to the left ear; verify laterality in clinical documentation
  • •Document the extent of ossicular fixation if available for clinical context

Code Hierarchy

└H74Other disorders of middle ear mastoid└H74.3Other acquired abnormalities of ear ossicles└H74.31Ankylosis of ear ossicles└H74.312Ankylosis of ear ossicles, left ear
└H74.312Ankylosis of ear ossicles, left ear

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