Glaucoma sec to oth eye disord, left eye, moderate stage

This code identifies a specific type of glaucoma that develops as a complication of another underlying eye condition affecting the left eye. It signifies that the intraocular pressure elevation and optic nerve damage are secondary to a different ocular pathology, and the disease progression is at a moderate stage.

Use this code when documentation clearly indicates secondary glaucoma in the left eye, with the underlying cause being an eye disorder other than trauma, inflammation, or medication. Supporting documentation should specify the moderate stage of the glaucoma, often evidenced by visual field defects and optic nerve damage.

• Ensure the documentation specifies "left eye" and "moderate stage" for accurate code assignment.
• Always code the underlying eye disorder first, as it is the primary cause of the secondary glaucoma.
• Distinguish this from primary open-angle glaucoma (H40.1x) and other forms of secondary glaucoma (e.g., H40.3x for traumatic, H40.4x for inflammatory).