Lichen sclerosus et atrophicus

This code represents a chronic inflammatory skin condition characterized by thin, white, wrinkled patches of skin, often with atrophy. It can affect any part of the body but commonly presents on the trunk, neck, and extremities, leading to itching, pain, and sometimes scarring.

Use this code for documented cases of lichen sclerosus et atrophicus affecting non-genital skin sites. This diagnosis should be supported by clinical examination findings and, if performed, biopsy results confirming the characteristic histological changes.

• Ensure documentation clearly specifies the affected body site to differentiate from genital forms.
• Do not use this code for lichen sclerosus affecting the vulva (N90.4) or penis (N48.0).
• Consider additional codes for associated symptoms like pruritus (L29.x) or pain (R52.x) if separately documented and treated.