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ICD-10-CM Code C96.5
Multifocal and unisystemic Langerhans-cell histiocytosis

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

C96.5 is a billable ICD code used to specify a diagnosis of multifocal and unisystemic Langerhans-cell histiocytosis. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code C965 is used to code Langerhans cell histiocytosis

Langerhans cell histiocytosis (LCH) is a rare disease involving clonal proliferation of Langerhans cells, abnormal cells deriving from bone marrow and capable of migrating from skin to lymph nodes. Clinically, its manifestations range from isolated bone lesions to multisystem disease. LCH is part of a group of clinical syndromes called histiocytoses, which are characterized by an abnormal proliferation of histiocytes (an archaic term for activated dendritic cells and macrophages). These diseases are related to other forms of abnormal proliferation of white blood cells, such as leukemias and lymphomas.

Specialty: Hematology
MeSH Codes: D006646, D006646, D006646
ICD 9 Codes: 202.5, 277.89, 516.5

Micrograph showing a Langerhans cell histiocytosis with the characteristic reniform Langerhans cells accompanied by abundant eosinophils. H&E stain.

Source: Wikipedia

Coding Notes for C96.5 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Hand-Schüller-Christian disease
Histiocytosis X, multifocal
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Multifocal and multisystemic (disseminated) Langerhans-cell histiocytosis - instead, use code C96.0
Unifocal Langerhans-cell histiocytosis - instead, use code C96.6

MS-DRG Mapping

  • DRG Group #642 - Inborn and other disorders of metabolism.

ICD-10-CM Alphabetical Index References for 'C96.5 - Multifocal and unisystemic Langerhans-cell histiocytosis'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code C96.5. Click on any term below to browse the alphabetical index.

Schüller-Christian disease or syndrome (C96.5)
Hand-Schüller-Christian disease or syndrome (C96.5)

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Other specified disorders of metabolism (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code C96.5 and a single ICD9 code, 277.89 is an approximate match for comparison and conversion purposes.


Parent Code: C96 - Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/C965