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H70.11

Billable

Chronic mastoiditis, right ear

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

What This Code Means

A long-standing infection and inflammation of the mastoid bone on the right side that persists over time.

Coding Tips

  • •Confirm documentation indicates 'chronic' status (typically present for weeks to months) rather than acute
  • •Chronic mastoiditis may be a sequela of recurrent or inadequately treated acute mastoiditis

Code Hierarchy

└H70Mastoiditis and related conditions└H70.1Chronic mastoiditis└H70.11Chronic mastoiditis, right ear
└H70.11Chronic mastoiditis, right ear

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