ICD-10-CM › C00-D49 › C81-C96 › C96 Other and unspecified malignant... › C96.2

C96.2

Malignant mast cell neoplasm

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

Billable FY2016 to FY2017, and a category header from FY2018.

Submit one of these 4 more specific codes instead:

  • C96.20 Malignant mast cell neoplasm, unspecified
  • C96.21 Aggressive systemic mastocytosis
  • C96.22 Mast cell sarcoma
  • C96.29 Other malignant mast cell neoplasm

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Malignant mast cell tumor
  2. FY2018 Description revised Malignant mast cell tumor Malignant mast cell neoplasm
  3. FY2018 Stopped being billable

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

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

Excludes1 - never coded here

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

Inherited from the C81-C96 section Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

Excludes2 - not included here

  • Kaposi's sarcoma of lymph nodes (C46.3)
  • secondary and unspecified neoplasm of lymph nodes (C77.-)
  • secondary neoplasm of bone marrow (C79.52)
  • secondary neoplasm of spleen (C78.89)

Codes in the same group

CodeDescriptionStatus
C96.0 Multifocal and multisystemic (disseminated) Langerhans-cell histiocytosis Valid
C96.4 Sarcoma of dendritic cells (accessory cells) Valid
C96.5 Multifocal and unisystemic Langerhans-cell histiocytosis Valid
C96.6 Unifocal Langerhans-cell histiocytosis Valid
C96.9 Malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecified Valid
C96.A Histiocytic sarcoma Valid
C96.Z Other specified malignant neoplasms of lymphoid, hematopoietic and related tissue Valid