D18.1

Approximate Synonyms

• Benign extra-axial hygroma

• Benign neoplasm, cystic hygroma

• Carpal hygroma

• Cystic hygroma

• Hygroma, carpal

• Hygroma, extraaxial, benign

• Lymphangioma

• Subdural hygroma

Clinical Information

• A benign neoplasm arising from the lymphatics.

• A benign neoplasm arising from the lymphatics. The tumor is composed of dilated lymphatic channels. Painless swelling is the usual clinical manifestation.

• A benign tumor resulting from a congenital malformation of the lymphatic system. Lymphangioendothelioma is a type of lymphangioma in which endothelial cells are the dominant component.

Details

• D18.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM D18.1 became effective on October 1, 2022.

• This is the American ICD-10-CM version of D18.1 – other international versions of ICD-10 D18.1 may differ.