H90.7 Mixed conductive and sensorineural hearing loss, unilateral with unrestricted hearing on the contralateral side

Name of the Condition

• Mixed Conductive and Sensorineural Hearing Loss, Unilateral with Unrestricted Hearing on the Contralateral Side
• ICD-10 Code: H90.7

Summary

This condition involves hearing loss in one ear due to combined issues in sound conduction and nerve signal transmission, while the opposite ear retains normal hearing function. It affects the ability to hear clearly in the affected ear, potentially impacting communication and daily activities.

Causes

Mixed conductive and sensorineural hearing loss may result from a combination of middle ear problems (such as fluid buildup, structural abnormalities, or infections) and damage to the inner ear or auditory nerve (often due to aging, noise exposure, or head trauma). The specific causes can vary depending on the underlying factors contributing to each component of the hearing loss.

Risk Factors

• Family history of hearing loss
• Prolonged exposure to loud noise
• Age-related degeneration
• Head trauma
• Chronic ear infections
• Certain medications with ototoxic effects

Symptoms

• Difficulty understanding speech, especially in noisy environments
• Sounds appearing muffled or distant in the affected ear
• Inability to hear soft sounds
• Tinnitus (ringing) in the affected ear
• Possible ear fullness or pressure

Diagnosis

Diagnosis involves a combination of audiometric tests to assess hearing levels, tympanometry to evaluate middle ear function, and imaging studies like MRI or CT scans to identify structural causes. A thorough clinical evaluation by an ENT specialist is typically required to determine the specific components of the hearing loss.

Treatment Options

• Hearing aids to amplify sound
• Surgical interventions such as ossicular chain reconstruction or cochlear implants
• Medications to address underlying infections or inflammation
• Auditory rehabilitation therapies to improve communication skills

Prognosis and Follow-Up

The prognosis depends on the underlying causes and severity of the hearing loss. Early intervention and appropriate treatment can improve outcomes. Regular follow-up with an ENT specialist is recommended to monitor hearing changes and adjust treatment as needed.

Complications

• Persistent hearing impairment affecting daily communication
• Increased risk of social isolation or depression
• Difficulty with work or educational tasks requiring auditory processing
• Potential progression of hearing loss if underlying causes are not addressed

Lifestyle & Prevention

• Avoid exposure to loud noises or use hearing protection when necessary
• Maintain good ear hygiene to prevent infections
• Manage chronic conditions that may contribute to hearing loss
• Consider regular hearing screenings, especially with risk factors

When to Seek Professional Help

Seek medical attention if you experience sudden or gradual hearing loss, persistent tinnitus, or difficulty understanding speech. Early evaluation can help identify the cause and determine appropriate treatment options.

Tips for Medical Coders

When coding H90.7, ensure documentation specifies unilateral hearing loss with unrestricted hearing on the contralateral side. Include details about the mixed nature of the hearing loss (both conductive and sensorineural components) and any relevant laterality or associated conditions. Verify that the documentation supports the specific characteristics of this code, including the presence of normal hearing in the unaffected ear.