H40.212
Acute angle-closure glaucoma, left eye
Clinical Classification Guidelines
Medical Intelligence & Overview
Acute angle-closure glaucoma is a sudden and severe form of glaucoma that causes a rapid increase in intraocular pressure, potentially damaging the optic nerve. When it affects the left eye, it is classified under ICD-10 code H40.212. This condition requires prompt medical attention to prevent permanent vision loss. It is characterized by a rapid onset of symptoms and can escalate quickly if not treated immediately.
Causes & Symptoms
Clinical Causes: Anatomic narrowness of the anterior chamber angle, which prevents proper drainage of aqueous humor Sudden pupil dilation in some cases, which can block the drainage angle Age-related changes, such as lens enlargement, that narrow the angle Family history of angle-closure glaucoma Certain medications that can cause pupillary dilation, like antihistamines or antidepressants Pre-existing ocular conditions like hyperopia (farsightedness)
Key Symptoms: Sudden eye pain and discomfort Headache around the eye or forehead Nausea and vomiting accompanying eye pain Blurred vision or seeing halos around lights Redness of the affected eye Dilated pupil that reacts poorly to light Reduced peripheral vision or vision loss if untreated
Diagnostic & Treatment
Diagnosis Path: Diagnosis of acute angle-closure glaucoma involves a comprehensive eye examination, including measuring intraocular pressure with tonometry. The eye doctor may also assess the drainage angle through gonioscopy, a procedure that uses a special lens to view the front part of the eye. Additional tests may include visual field tests and optic nerve assessment. Prompt diagnosis is critical to prevent irreversible eye damage and vision loss.
Treatment Protocols: Emergency treatment aims to rapidly reduce intraocular pressure and preserve vision. Typical interventions include:
Clinical Advice & FAQs
Billing Guidance
Is H40.212 a billable ICD-10 code?
Yes, H40.212 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report H40.212?
Clinical documentation must specify the nature of Acute angle-closure glaucoma, left eye and any associated comorbidities for accurate reporting.
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