2B31.20

ICD-11 MMS 2026-01

Langerhans cell histiocytosis involving the skin

Index terms

  • Langerhans cell histiocytosis involving the skin
  • Class I histiocytosis involving the skin
  • Histiocytosis X involving the skin

Exclusions from above levels

  • 2E03 – Malignant neoplasm metastasis in bone or bone marrow
  • http://id.who.int/icd/entity/501778925 – Malignant neoplasm metastasis in lymph nodes
  • http://id.who.int/icd/entity/97145147 – Malignant neoplasm metastasis in thymus gland

Sibling codes

  • 2B31.2Y – Other specified Langerhans cell histiocytosis
  • 2B31.2Z – Langerhans cell histiocytosis, unspecified

Foundation entity

Langerhans cell histiocytosis involving the skin – http://id.who.int/icd/entity/2119495866

Allowed postcoordination axes

Part of: 2B31.2: Langerhans cell histiocytosis › 2B31: Histiocytic or dendritic cell neoplasms › 02: Neoplasms