L72: Follicular cysts of skin and subcutaneous tissue

L72.9: Follicular cyst of skin and subcutaneous tissue, unspecified

Every hair is anchored in a small bulb, the hair follicle. This condition causes fairly large cysts filled with solid material to develop around these small hair follicles. The cysts are then seen or felt as small papules or large nodules of a few centimeters.