this is how ICD 10 describes this problem ICD-Code: L73.9: Follicular disorder, unspecified Some parts of your hirsute skin have been damaged. Every hair is anchored in a small bulb, the hair follicle. Sebaceous glands are usually attached to these hair follicles. The sebaceous glands produce an oily substance for the skin called sebum. Sebum prevents the skin from drying out. The roots of your hair are damaged. This can occur, for example, if the pores become inflamed by pathogens. Pus-filled c