malignant otitis externa SNOMEDCT_US_2025_09_01:194206006 DOID:10516 UMLS_CUI:C0155395 ICD9CM:380.14 An otitis externa which involves infection of the external ear that has spread to involve the skull bone containing part of the ear canal, the middle ear, and the inner ear. It is caused by the bacteria Pseudomonas. This is common in people with weakened immune systems and in older people with diabetes. ICD10CM:H60.2 disease_ontology otitis externa