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H70.12

Billable

Chronic mastoiditis, left 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 left side that persists over time.

Coding Tips

  • •Verify the chronic nature of the condition is documented before assigning this code
  • •Distinguish from acute mastoiditis by reviewing the duration and clinical presentation in the medical record

Code Hierarchy

└H70Mastoiditis and related conditions└H70.1Chronic mastoiditis└H70.12Chronic mastoiditis, left ear
└H70.12Chronic mastoiditis, left ear

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