Glaucoma sec to oth eye disord, l eye, indeterminate stage

This code signifies elevated intraocular pressure and optic nerve damage in the left eye, resulting from an underlying ocular condition other than trauma, inflammation, or drug-induced causes. The specific stage of glaucoma progression is not yet determined or cannot be classified.

Use this code when documentation clearly indicates secondary glaucoma in the left eye due to another eye disorder (e.g., retinal detachment, intraocular tumor, or iris neovascularization) and the stage of glaucoma is indeterminate. This code is appropriate when the physician has not yet assigned a specific stage (e.g., mild, moderate, severe) or when further evaluation is needed.

• Always sequence the underlying eye disorder causing the secondary glaucoma first, followed by this code.
• Ensure documentation specifies "left eye" and clarifies that the cause is "secondary to other eye disorders" and the stage is "indeterminate."
• Do not use this code if the secondary glaucoma is due to trauma (H40.3-), inflammation (H40.4-), or drugs (H40.6-).