Simple chronic conjunctivitis, right eye

This code signifies a persistent, non-infectious inflammation of the conjunctiva in the right eye, characterized by mild symptoms such as redness, irritation, and discharge. It indicates a chronic, uncomplicated form of conjunctivitis without specific underlying causes like allergies or infections.

Apply this code when documentation specifies chronic conjunctivitis affecting the right eye, without further detail regarding its etiology (e.g., allergic, infectious, toxic). This is appropriate when the physician has diagnosed a simple, long-standing inflammation of the conjunctiva in the specified eye.

• Ensure documentation explicitly states "chronic" and specifies "right eye."
• Do not use if the conjunctivitis is acute, allergic, infectious, or due to other specified causes; use more specific codes.
• Verify laterality. If both eyes are affected, separate codes for each eye (H10.421 and H10.422) or a bilateral code (H10.423) may be appropriate if available.