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H70.91

Billable

Unspecified mastoiditis, right ear

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

What This Code Means

Inflammation of the mastoid bone of unspecified type and severity on the right side.

Coding Tips

  • •Confirm right ear laterality is documented before assigning this code
  • •If the type of mastoiditis (acute, chronic, or other) is documented, use a more specific code from the H70 category

Code Hierarchy

└H70Mastoiditis and related conditions└H70.9Unspecified mastoiditis└H70.91Unspecified mastoiditis, right ear
└H70.91Unspecified mastoiditis, right ear

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