H71.33 Diffuse cholesteatosis, bilateral

Name of the Condition

• Diffuse cholesteatosis, bilateral

Summary

Diffuse cholesteatosis, bilateral, is a condition characterized by the widespread accumulation of keratinizing squamous epithelium within the middle ear of both ears, resulting in non-cancerous but destructive lesions. This growth can erode surrounding structures, including the ossicles and bony walls, and may lead to hearing loss or other complications. The condition often presents as a chronic or recurrent issue, requiring careful evaluation and management.

Causes

Cholesteatosis typically develops due to the migration of skin from the eardrum into the middle ear space, often secondary to chronic ear infections or eustachian tube dysfunction. Congenital factors, where skin cells are trapped during fetal development, can also contribute to its formation. In some cases, prior ear surgery or trauma may predispose to the condition.

Risk Factors

• Chronic otitis media (middle ear infection)
• Eustachian tube dysfunction
• Prior ear surgery or trauma
• Congenital abnormalities of the ear
• Recurrent ear infections in childhood

Symptoms

• Conductive hearing loss (often gradual)
• Ear pain or discomfort
• Drainage from the ear (may be foul-smelling)
• Dizziness or balance issues
• Sensation of fullness in the ear
• Possible facial nerve weakness (in advanced cases)

Diagnosis

Diagnosis is based on clinical evaluation, including otoscopic examination and audiometry. Imaging studies, such as CT scans, may be used to assess the extent of bony erosion and soft tissue involvement. Biopsy may be performed to confirm the diagnosis if clinical findings are unclear.

Treatment Options

Treatment may include surgical intervention to remove the cholesteatoma and repair damaged structures, such as the ossicles or eardrum. Medical management with antibiotics or ear drops may be used to address infections. Regular follow-up is essential to monitor for recurrence.

Prognosis and Follow-Up

Prognosis depends on the extent of the condition and the success of treatment. Early intervention can improve outcomes, but recurrence is possible. Long-term follow-up with periodic evaluations is recommended to detect and address any complications promptly.

Complications

• Permanent hearing loss
• Chronic ear infections
• Facial nerve paralysis
• Meningitis or brain abscess (rare but serious)
• Balance disorders

Lifestyle & Prevention

• Manage chronic ear infections promptly
• Avoid inserting objects into the ears
• Use ear protection in noisy environments
• Maintain good eustachian tube function through nasal hygiene or decongestants if needed

When to Seek Professional Help

Seek medical attention if you experience persistent ear pain, drainage, hearing loss, dizziness, or other concerning symptoms. Early evaluation can prevent progression and complications.

Tips for Medical Coders

When coding for diffuse cholesteatosis, bilateral (H71.33), ensure documentation specifies bilateral involvement. Verify that the diagnosis aligns with clinical findings and that any associated procedures or complications are appropriately coded. Review medical records for clarity on ear involvement and treatment details to support accurate coding.