H21.1X3

What This Code Means

This code describes blood vessel problems affecting the iris (the colored part of the eye) and ciliary body (the muscle that controls eye focus) that occur in both eyes. These vascular disorders can affect blood flow and eye function.

Coding Tips

• •Verify that the condition is documented as bilateral (affecting both eyes) before assigning this code; if only one eye is affected, use the unilateral equivalent instead
• •Ensure the specific vascular disorder is documented in the medical record; this code is used when the vascular condition doesn't fit other more specific iris/ciliary body diagnoses