H40.222
Chronic angle-closure glaucoma, left eye
Clinical Classification Guidelines
Medical Intelligence & Overview
Chronic angle-closure glaucoma is a long-term eye condition that gradually damages the optic nerve, often leading to vision loss if left untreated. It specifically affects the left eye in this case, and is characterized by a persistent increase in intraocular pressure due to the narrowing or closure of the anterior chamber angle. This condition develops slowly and may not cause noticeable symptoms in its early stages, making regular eye examinations essential for early detection and management.
Causes & Symptoms
Clinical Causes: Anatomical predisposition, such as a shallow anterior chamber of the eye Age-related changes in eye structures Pupil dilation episodes, which can temporarily narrow the drainage angle Increased lens thickness or size, common with aging Scarring or other structural changes from previous eye surgeries or injuries Family history of glaucoma or other eye conditions
Key Symptoms: Gradual loss of peripheral or side vision Halos around lights, especially at night Eye discomfort or mild pain, in some cases Headaches or eye tenderness Narrow or blurred vision in the affected eye No symptoms in the early stages, emphasizing the importance of routine eye exams
Diagnostic & Treatment
Diagnosis Path: Measurement of intraocular pressure (tonometry), which is often elevated Gonioscopy, an examination that views the drainage angle to assess its openness Visual field testing to evaluate peripheral vision loss Optic nerve assessment through ophthalmoscopy Ultrasound biomicroscopy or anterior segment imaging in some cases
Treatment Protocols: Medications such as eye drops that decrease fluid production or improve drainage Laser procedures like laser iridotomy, which creates a small hole in the iris to facilitate fluid flow Surgical interventions, including trabeculectomy or drainage implant procedures, for cases unresponsive to medication or laser Regular follow-up appointments to monitor intraocular pressure and optic nerve health Patient education on the importance of adherence to prescribed treatments and routine eye check-ups
Clinical Advice & FAQs
Billing Guidance
Is H40.222 a billable ICD-10 code?
Yes, H40.222 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report H40.222?
Clinical documentation must specify the nature of Chronic angle-closure glaucoma, left eye and any associated comorbidities for accurate reporting.
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