Malignant otitis externa, right ear

This code identifies a severe, invasive infection of the external auditory canal and surrounding soft tissues, specifically affecting the right ear. Malignant otitis externa is typically caused by Pseudomonas aeruginosa and is characterized by osteomyelitis of the temporal bone, often seen in immunocompromised or diabetic patients.

Apply this code when documentation clearly indicates a diagnosis of malignant otitis externa localized to the right ear. Supporting documentation should detail the infection's invasive nature, often including imaging findings (e.g., CT or MRI showing bone erosion) and microbiological culture results confirming the causative organism.

• Ensure laterality is precisely documented (right, left, or bilateral) as distinct codes exist for each.
• Do not confuse with simple otitis externa (H60.3-) or other forms of external ear infection.
• Code any associated osteomyelitis of the temporal bone or skull base separately, if specified.