H74: Other disorders of middle ear mastoid
H74.9: Unspecified disorder of middle ear and mastoid
H74.90: Unspecified disorder of middle ear and mastoid, unspecified ear
H74.91: Unspecified disorder of right middle ear and mastoid
H74.92: Unspecified disorder of left middle ear and mastoid
H74.93: Unspecified disorder of middle ear and mastoid, bilateral
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