H70.011
BillableSubperiosteal abscess of mastoid, right ear
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A collection of pus that has formed under the membrane covering the mastoid bone (the bony bump behind the right ear), typically resulting from a serious ear infection that has spread beyond the middle ear. This is a potentially serious condition that requires prompt medical attention.
Coding Tips
- •This code is specific to the RIGHT ear; verify laterality in documentation and use H70.012 for left ear or H70.013 for bilateral cases
- •Subperiosteal abscess indicates the infection has progressed beyond simple mastoiditis, so ensure documentation supports this level of severity and that it's not coded as uncomplicated mastoiditis (H70.00-)
Code Hierarchy
└H70Mastoiditis and related conditions└H70.0Acute mastoiditis└H70.01Subperiosteal abscess of mastoid└H70.011Subperiosteal abscess of mastoid, right ear
└H70.011Subperiosteal abscess of mastoid, right ear