H18.812
Anesthesia and hypoesthesia of cornea, left eye
Clinical Classification Guidelines
Medical Intelligence & Overview
Corneal anesthesia and hypoesthesia refer to a decreased or absent sensation in the cornea, which is the clear, dome-shaped surface covering the front of the eye. When this condition affects the left eye, it can impact the eye's ability to detect sensations such as touch, pain, temperature, or foreign objects. The ICD-10 code H18.812 identifies this specific diagnosis. Proper understanding of this condition helps in recognizing its significance and the importance of appropriate medical evaluation and management.
Causes & Symptoms
Clinical Causes: Nerve damage due to trauma or injury to the eye or surrounding structures Surgical procedures involving the eye such as corneal or ocular surgery Herpes zoster ophthalmicus (shingles affecting the eye) Diabetic neuropathy leading to nerve impairment Brain or nerve disorders, such as tumors or multiple sclerosis, affecting the trigeminal nerve Use of topical or systemic certain medications that impair nerve function Degenerative nerve diseases or conditions that affect nerve conduction Infections leading to nerve inflammation or damage
Key Symptoms: Reduced or loss of corneal sensation, which may make the eye less responsive to touch or stimuli Increased risk of corneal injury or ulceration due to decreased sensation Blurry or decreased vision in the affected eye Foreign body sensation or discomfort that might be difficult to perceive Increased sensitivity to light (photosensitivity) or dryness Potential development of corneal infections or ulcers if sensation loss is not monitored
Diagnostic & Treatment
Diagnosis Path: Diagnosis of corneal anesthesia or hypoesthesia generally involves a comprehensive eye examination. The eye care professional conducts special tests such as the cotton swab test, where a fine filament is gently touched to the cornea to assess sensation. Additional assessments may include slit-lamp examination, corneal staining with dyes, and reviewing patient medical history to identify potential underlying causes. Neurological examinations may also be performed if nerve involvement from systemic conditions is suspected. Advanced imaging or nerve conduction studies can be utilized for further evaluation.
Treatment Protocols: Managing corneal anesthesia or hypoesthesia centers on addressing the underlying cause and preventing complications. Treatment strategies may include:
Clinical Advice & FAQs
Billing Guidance
Is H18.812 a billable ICD-10 code?
Yes, H18.812 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report H18.812?
Clinical documentation must specify the nature of Anesthesia and hypoesthesia of cornea, left eye and any associated comorbidities for accurate reporting.
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