H40.139
Pigmentary glaucoma, unspecified eye
Clinical Classification Guidelines
Medical Intelligence & Overview
Pigmentary glaucoma is a specific type of open-angle glaucoma characterized by the abnormal dispersion of pigment granules within the eye. These granules can clog the eye's drainage system, leading to increased intraocular pressure (IOP). If left untreated, this elevated pressure can damage the optic nerve and result in vision loss. The condition can affect one or both eyes and can develop gradually over time. While it is classified as a form of pigmentary glaucoma with an unspecified eye, understanding its causes, symptoms, and management options is essential for maintaining eye health.
Causes & Symptoms
Clinical Causes: Genetic predisposition that affects the structure of the eye's pigment cells Mechanical rubbing of the iris against the lens zonules, which releases pigment granules into the fluid inside the eye Anatomical variations in the eye's drainage angle that facilitate pigment dispersion Increased activity or movement of the iris leading to more pigment release
Key Symptoms: Gradual loss of peripheral vision leading to tunnel vision if untreated Appearance of dark rings around the cornea (though less common in pigmentary glaucoma) Visual disturbances such as blurred vision or seeing halos around lights Episodes of mild eye discomfort or a sensation of pressure None in the early stages; symptoms often develop as vision impairment progresses
Diagnostic & Treatment
Diagnosis Path: Comprehensive eye examination including intraocular pressure measurement Gonioscopy to examine the drainage angle for pigment deposit Visual field testing to assess peripheral vision Optical coherence tomography (OCT) to evaluate the optic nerve head Slit-lamp examination to identify pigment dispersion and any associated corneal pigmentation
Treatment Protocols: Medications such as eye drops designed to lower intraocular pressure, including prostaglandin analogs, beta-blockers, and alpha agonists Laser therapy procedures like laser trabeculoplasty to enhance fluid drainage Surgical interventions in advanced cases to create new drainage pathways or reduce IOP Regular monitoring of eye pressure and optic nerve health to prevent progression Management of other ocular conditions that may influence glaucoma development
Clinical Advice & FAQs
Billing Guidance
Is H40.139 a billable ICD-10 code?
Yes, H40.139 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report H40.139?
Clinical documentation must specify the nature of Pigmentary glaucoma, unspecified eye and any associated comorbidities for accurate reporting.
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