The provider revises a previous simple or complete mastoidectomy with a modified radical mastoidectomy. This includes removing all of the mastoid air cells, any granulation and infected tissue, and the bony partitions of the mastoid cavity. The provider also reconstructs the ear canal if needed. He performs the procedure because the prior procedure failed to produce a dry ear, which results in recurrent otitis media accompanied by accumulation of pus, eardrum perforation, and recurrent or residual hearing loss.
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