H71.2Non-Billable (Header)Cholesteatoma of mastoidChild CodesH71.20Cholesteatoma of mastoid, unspecified earH71.21Cholesteatoma of mastoid, right earH71.22Cholesteatoma of mastoid, left earH71.23Cholesteatoma of mastoid, bilateralCode Hierarchy└H71Cholesteatoma of middle ear└H71.2Cholesteatoma of mastoid└H71.2Cholesteatoma of mastoid