Sebaceous cyst

This code represents a benign, slow-growing cyst that arises from a blocked sebaceous gland, typically containing keratinous material. These cysts are commonly found on the scalp, face, neck, and trunk, presenting as a firm, movable, non-tender nodule beneath the skin.

Use this code when documentation clearly identifies a sebaceous cyst, also known as an epidermoid cyst or epidermal inclusion cyst. This applies to both initial diagnosis and subsequent encounters for management, such as excision or drainage. Supporting documentation includes physician notes describing the lesion's appearance, location, and a definitive diagnosis of a sebaceous cyst.

• Differentiate from other skin lesions like lipomas or dermatofibromas; ensure the documentation specifies "sebaceous cyst."
• If the cyst is infected, consider an additional code for the infection (e.g., cellulitis or abscess) if documented.
• Do not use for pilonidal cysts, which have a separate and more specific code.