Chalazion

Definition

A chalazion is a small cyst on the eyelid caused by blockage of a meibomian gland.

3 subordinate codes

• 9A02.00Chalazion externum
• 9A02.01Chalazion internum
• 4B4ZDiseases of the immune system, unspecified

Nearby in Inflammatory disorders of eyelid

• 9A02.1Posterior blepharitis
• 9A02.2Ligneous conjunctivitis
• 9A02.4Meibomian gland dysfunction
• 4B4YOther specified diseases of the immune system
• 4B4ZDiseases of the immune system, unspecified