Glaucoma secondary to oth eye disord, r eye, severe stage

This code signifies elevated intraocular pressure and optic nerve damage in the right eye, resulting from another underlying ocular condition, and has progressed to a severe stage. This form of glaucoma is not primary but rather a consequence of a pre-existing eye disease. The severe stage indicates significant and irreversible vision loss or optic nerve damage.

Apply this code when documentation clearly states a diagnosis of secondary glaucoma in the right eye, explicitly linked to another eye disorder (e.g., uveitis, intraocular hemorrhage, retinal detachment). The physician's assessment must also indicate the disease has reached a severe stage. Supporting documentation includes ophthalmology notes detailing visual field defects, optic nerve cupping, and the identified primary ocular cause.

• Ensure the documentation specifies the right eye and the severe stage to accurately assign this code.
• Always code the underlying primary eye disorder first, followed by this secondary glaucoma code.
• Distinguish this from primary open-angle glaucoma (H40.1x) or glaucoma secondary to trauma (H40.3x-H40.4x).