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ICD-10-CM Current in FY 2027

C96.6

Unifocal Langerhans-cell histiocytosis

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where C96.6 sits in the official hierarchy. Each level is the code it is classified under.

  1. C96 Parent Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue
  2. C96.6 This code Unifocal Langerhans-cell histiocytosis

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Inclusion Terms

Eosinophilic granuloma

Inclusion Terms

Histiocytosis X, unifocal

Inclusion Terms

Histiocytosis X NOS

Inclusion Terms

Langerhans-cell histiocytosis NOS

Excludes1

personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues ( Z85.79 )

Inherited from C96 — Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue

Excludes1

multifocal and multisysemic (disseminated) Langerhans-cell histiocytosis ( C96.0 )

Excludes1

multifocal and unisystemic Langerhans-cell histiocytosis ( C96.5 )

Version History

How C96.6 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Unifocal Langerhans-cell histiocytosis

  2. FY 2026 Effective

    Unchanged

    Unifocal Langerhans-cell histiocytosis

Related Codes

Other codes under C96

Codes whose official notes reference C96.6

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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