H60.2 Malignant Otitis Externa – Causes & Treatment
H60.2 is the ICD-10 code for malignant otitis externa, a severe bacterial infection of the outer ear canal primarily affecting older adults with diabetes.
Things worth knowing about "H60.2"
H60.2 is the ICD-10 code for malignant otitis externa, a severe bacterial infection of the outer ear canal primarily affecting older adults with diabetes.
What is H60.2 – Malignant Otitis Externa?
The ICD-10 code H60.2 refers to malignant otitis externa, also known as necrotizing otitis externa. Despite its name, this condition is not a cancer. It is a severe, potentially life-threatening bacterial infection of the external ear canal that spreads to the surrounding bone and soft tissue structures. It represents a rare but dangerous complication of otitis externa (outer ear infection).
Causes
Malignant otitis externa is most commonly caused by the bacterium Pseudomonas aeruginosa. The pathogen penetrates through the skin of the ear canal into deeper tissue layers and can invade the temporal bone and adjacent anatomical structures.
Key risk factors include:
- Diabetes mellitus (most common risk factor)
- Immunocompromised states (e.g., HIV infection, chemotherapy, immunosuppressive therapy)
- Advanced age
- History of recurrent ear canal infections
- Manipulation of the ear canal (e.g., with cotton swabs)
Symptoms
The condition often begins similarly to a common ear infection but follows a significantly more severe course:
- Severe, persistent ear pain, often worse at night
- Purulent discharge from the ear
- Swelling and redness of the ear canal
- Granulation tissue (fleshy tissue growth) in the ear canal
- In advanced cases: cranial nerve palsies (e.g., facial nerve palsy)
- Headache and fever (less common)
Diagnosis
Diagnosing malignant otitis externa requires a combination of clinical examination and imaging studies:
- Otomicroscopy: Detailed inspection of the ear canal by an ENT specialist
- Swab culture: Identification of the causative microorganism
- CT or MRI scan: Imaging to assess bone and soft tissue involvement
- Bone scintigraphy: Detection of osteomyelitis (bone infection)
- Blood tests: Inflammatory markers such as CRP and white blood cell count
Treatment
Treatment of malignant otitis externa is intensive and prolonged:
Antibiotic Therapy
The cornerstone of treatment is long-term antibiotic therapy, typically lasting 6 to 8 weeks. Commonly used agents include ciprofloxacin (a fluoroquinolone), often combined with piperacillin/tazobactam or ceftazidime in severe cases. Treatment is usually initiated with intravenous antibiotics in a hospital setting.
Surgical Intervention
In severe cases or when conservative management fails, surgical debridement (removal of necrotic tissue) may be necessary.
Management of Underlying Conditions
Optimal blood glucose control in diabetic patients is essential for successful treatment outcomes.
Follow-up and Monitoring
Regular clinical and imaging follow-up is required to monitor treatment response and detect any relapse at an early stage.
Prognosis
With early diagnosis and consistent treatment, the prognosis is generally favorable. However, if left untreated or diagnosed late, the disease can become life-threatening and lead to osteomyelitis of the skull base, cranial nerve damage, or intracranial spread of infection.
References
- World Health Organization (WHO): ICD-10 International Classification of Diseases, 10th Revision, Code H60.2 – Malignant otitis externa.
- Chandler JR. Malignant external otitis. The Laryngoscope, 1968;78(8):1257–1294. PMID: 5668764.
- Carfrae MJ, Kesser BW. Malignant otitis externa. Otolaryngologic Clinics of North America, 2008;41(3):537–549. PMID: 18435998.
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