H21.89

What This Code Means

This code describes various uncommon or specific problems affecting the iris (the colored part of the eye) or the ciliary body (the muscle that controls eye focus and produces fluid inside the eye) that don't fit into other defined categories. These conditions may include structural abnormalities, functional disorders, or other eye complications affecting these structures.

Coding Tips

• •Use this code only when the specific iris or ciliary body disorder is documented but doesn't match more specific H21 codes (H21.0-H21.88); always review the medical record to ensure a more specific code isn't available
• •This is a catch-all code, so documentation should clearly describe the condition being treated; consider querying the provider if the documentation is vague to determine if a more specific diagnosis code applies