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C96.6 - Unifocal Langerhans-cell histiocytosis


The ICD 10 Code for Unifocal Langerhans-cell histiocytosis is listed as C96.6.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: C96.6
Description: Unifocal Langerhans-cell histiocytosis
  • Eosinophilic granuloma
  • Histiocytosis X, unifocal
  • Histiocytosis X NOS
  • Langerhans-cell histiocytosis NOS
  • Excludes1: multifocal and multisysemic (disseminated) Langerhans-cell histiocytosis (C96.0)
  • multifocal and unisystemic Langerhans-cell histiocytosis (C96.5)
Diagnostic Related Groups
(MS-DRG v30.0)
642 - Inborn And Other Disorders Of Metabolism
Chapter Neoplasms (C00-D49)
Block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
Parent C96 - Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 277.89 - Other specified disorders of metabolism (approximate)
ICD-10-CM Siblings (same level / similar specificity) of C96.6:
C96.0 - Multifocal and multisystemic (disseminated) Langerhans-cell histiocytosis
C96.2 - Malignant mast cell tumor
C96.4 - Sarcoma of dendritic cells (accessory cells)
C96.5 - Multifocal and unisystemic Langerhans-cell histiocytosis
C96.9 - Malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecified
C96.A - Histiocytic sarcoma
C96.Z - Other specified malignant neoplasms of lymphoid, hematopoietic and related tissue