Postmastoid compl NOS 38331 Postmastoid mucosal cyst 38332 Postmastoid cholesteatma 38333 Postmastoid granulations 38381 Postauricular fistula 38389 Disorders of mastoid NEC 3839 Mastoiditis NOS 38400 Acute myringitis NOS 38401 Bullous myringitis 38409 Acute myringitis NEC 3841 Chronic myringitis 38420 ...