T28.91 Corrosions of ear drum

Name of the Condition

• Corrosions of Ear Drum
• ICD-10-CM Code: T28.91

Summary

Corrosions of the ear drum involve damage to the tympanic membrane caused by corrosive substances. This code applies when the injury is limited to the ear drum and not associated with other specified ear structures.

Causes

Exposure to corrosive agents (e.g., acids, alkalis) that directly contact the ear drum. Chemical injuries may result from accidental or intentional contact with toxic substances.

Risk Factors

• Occupational exposure to hazardous chemicals near the head.
• Accidental contact with corrosive substances (e.g., cleaning agents).
• Intentional self-harm involving corrosive agents.
• Improper use of ear drops or irrigation solutions.

Symptoms

• Ear pain or discomfort.
• Hearing loss or muffled hearing.
• Tinnitus (ringing in the ear).
• Visible damage to the ear drum on examination.

Diagnosis

Diagnosis requires clinical evaluation, including otoscopic examination to assess the ear drum. Imaging or audiometry may be used to evaluate hearing function or structural damage.

Treatment Options

Treatment focuses on cleaning the ear canal, removing residual corrosive material, and managing pain. Antibiotics may be prescribed if infection is present. Severe cases may require surgical repair.

Prognosis and Follow-Up

Prognosis depends on the extent of damage and promptness of treatment. Most mild cases heal with conservative care, but severe injuries may result in permanent hearing loss. Follow-up evaluations monitor healing and hearing function.

Complications

• Permanent hearing loss.
• Chronic ear infections.
• Perforation of the ear drum.
• Tinnitus or dizziness.

Lifestyle & Prevention

• Avoid contact with corrosive substances near the ears.
• Use protective equipment in occupational settings.
• Store chemicals safely to prevent accidental exposure.
• Follow proper instructions for ear care products.

When to Seek Professional Help

Seek medical attention if ear pain, hearing loss, or visible ear drum damage occurs after exposure to corrosive agents. Immediate care is recommended to minimize long-term effects.

Tips for Medical Coders

Use T28.91 for corrosions limited to the ear drum. Document the cause (e.g., chemical exposure) and clinical findings (e.g., otoscopic evidence of damage) to support code assignment. Ensure no other ear structures are involved before selecting this code.