H21.219

What This Code Means

This code describes a deterioration or breakdown of the drainage system in the front part of the eye (the chamber angle) when the specific eye affected is not documented. The chamber angle is important for fluid drainage, and its degeneration can affect eye pressure and vision.

Coding Tips

• •Use this code only when the medical record does not specify whether the condition affects the right eye, left eye, or both eyes; if laterality is documented, use the more specific codes H21.211 (right eye) or H21.212 (left eye)
• •This code is typically used in ophthology or optometry settings and may be associated with glaucoma risk; review the documentation to ensure no more specific diagnosis is documented