H90.8 Mixed conductive and sensorineural hearing loss, unspecified

Name of the Condition

• Mixed Conductive and Sensorineural Hearing Loss, Unspecified (ICD-10 Code: H90.8)

Summary

Mixed conductive and sensorineural hearing loss, unspecified, refers to a combined reduction in hearing ability resulting from both outer/middle ear issues (conductive component) and inner ear or auditory nerve dysfunction (sensorineural component). This condition typically impairs the ability to hear faint sounds and may involve structural, infectious, or degenerative factors affecting multiple parts of the ear.

Causes

Mixed hearing loss may arise from a combination of factors, such as chronic ear infections causing middle ear damage (conductive) alongside age-related inner ear degeneration (sensorineural). Other potential causes include otosclerosis, head trauma, or exposure to ototoxic substances that affect both the middle and inner ear structures.

Risk Factors

• Recurrent or chronic ear infections.
• Advanced age (presbycusis).
• History of ear surgery or trauma.
• Prolonged exposure to loud noises.
• Use of ototoxic medications (e.g., certain antibiotics or chemotherapy agents).
• Genetic predispositions to hearing loss.

Symptoms

• Difficulty hearing soft or high-frequency sounds.
• Muffled or distorted speech perception.
• Sensation of fullness or pressure in the ear (if conductive component present).
• Tinnitus (ringing in the ears) or balance issues (if sensorineural component present).

Diagnosis

Diagnosis involves a comprehensive evaluation by an ENT specialist, including audiometric testing to distinguish conductive and sensorineural components, physical examination of the ear, and imaging studies (e.g., MRI or CT scan) to identify structural abnormalities. Tympanometry or bone conduction tests may also be used to assess middle ear function.

Treatment Options

Treatment depends on the underlying causes and may include hearing aids to amplify sound, surgical interventions for correctable conductive issues (e.g., tympanoplasty), or cochlear implants for severe sensorineural loss. Management may also involve addressing contributing factors like infections or ototoxic medication use.

Prognosis and Follow-Up

Prognosis varies based on the severity and reversibility of the underlying causes. Conductive components may be treatable, while sensorineural loss is often permanent. Regular follow-up with an audiologist or ENT is recommended to monitor hearing changes and adjust interventions as needed.

Complications

Untreated mixed hearing loss can lead to communication difficulties, social isolation, or cognitive decline due to reduced auditory input. Balance problems may occur if the inner ear is affected, increasing fall risk in older adults.

Lifestyle & Prevention

• Protect ears from loud noises using earplugs or earmuffs.
• Manage ear infections promptly to prevent chronic damage.
• Avoid ototoxic medications when possible or monitor hearing during use.
• Maintain good ear hygiene to reduce wax buildup or blockages.

When to Seek Professional Help

Seek medical attention if you experience sudden hearing loss, persistent ear pain, dizziness, or difficulty understanding speech. Early evaluation is critical for identifying treatable causes and preventing further deterioration.

Tips for Medical Coders

Document the presence of both conductive and sensorineural components to support the H90.8 code. Include details on the affected ear(s), severity, and any contributing factors (e.g., infections, trauma) to ensure accurate coding and clinical context.