AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2025 Issue 4; New/Revised ICD-10-CM Codes
Neovascular Glaucoma
Neovascular glaucoma, is a type of secondary closed angle glaucoma that is associated with diabetic retinopathy and other retinovascular diseases, such as central retinal vein occlusion. It is characterized by the formation of new blood vessels over the iris and angle of the anterior chamber of the eye. These blood vessels form as a result of ocular or retinal ischemia. Neovascular glaucoma is a potentially blinding condition. Early diagnosis along with aggressive treatment are critical components to the management of this condition. Subcategory H40.84, Neovascular secondary angle closure glaucoma, has been created with the following new codes:H40...
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Article Overview
This article provides a high-level overview of neovascular glaucoma, including its relationship to ischemic retinal and vascular eye disease, its potential severity, and the addition of laterality-specific ICD-10-CM coding within the relevant subcategory. It is useful for coders, ophthalmology staff, and compliance teams who need to understand the general clinical context and the updated coding structure covered in the article.
Why This Topic Matters
Neovascular glaucoma is a serious eye condition that may be encountered in patients with retinal vascular disease. The article matters because it ties the clinical diagnosis to the ICD-10-CM code family used to capture laterality and the unspecified-eye option.
What You Will Learn
- The general clinical context of neovascular glaucoma
- How the condition relates to retinal ischemia and vascular eye disease
- That a specific ICD-10-CM subcategory was created for this diagnosis
- That the coding structure includes laterality-based options
Who Should Read This
- Medical coders
- Ophthalmology practices
- Clinical documentation staff
- Coding auditors
- Revenue cycle teams
Codes Discussed
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