K13.4

Applicable To

• Eosinophilic granuloma

• Granuloma pyogenicum

• Verrucous xanthoma

Clinical Information

• A clinical variant of langerhans cell histiocytosis characterised by unifocal involvement of a bone most often), skin, or lung. Patients are usually older children or adults usually presenting with a lytic bone lesion. The etiology is unknown. Morphologically, eosinophilic granuloma is characterised by the presence of langerhans cells in a characteristic milieu which includes histiocytes, eosinophiles neutrophiles, and small, mature lymphocytes.

• Most benign clinical form of langerhans-cell histiocytosis, which involves localized nodular lesions of the gastric mucosa, small intestine, bones, lungs, or skin, with infiltration by eosinophils; the proliferating cell that appears to be responsible for the clinical manifestations is the langerhans cell.

• The most benign and common form of langerhans-cell histiocytosis which involves localized nodular lesions predominantly of the bones but also of the gastric mucosa, small intestine, lungs, or skin, with infiltration by eosinophils.

Details

• K13.4 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 K13.4 became effective on October 1, 2022.

• This is the American ICD-10-CM version of K13.4 – other international versions of ICD-10 K13.4 may differ.