Blue sclera

This code describes a condition where the white outer layer of the eye (sclera) appears to have a bluish tint. This discoloration is often due to the underlying choroidal pigment showing through an abnormally thin or translucent sclera. It can be an isolated finding or a manifestation of a systemic disorder.

Assign this code when documentation explicitly states "blue sclera" or describes the characteristic bluish discoloration of the sclera. This finding is frequently associated with connective tissue disorders such as osteogenesis imperfecta, Ehlers-Danlos syndrome, or Marfan syndrome, but can also be present in iron deficiency anemia or as a benign familial trait.

• Always code the underlying systemic condition if known and documented, as blue sclera is often a symptom.
• Do not confuse with scleral icterus (yellow sclera), which indicates jaundice and is coded differently.
• Ensure the documentation clearly specifies "blue sclera" and not merely a description of the conjunctiva.