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Diagnosis Code

C96.21 AGGRESSIVE SYSTEMIC MASTOCYTOSIS


Code Information

Diagnosis Code: C96.21

Short Description: Aggressive systemic mastocytosis

Long Description: Aggressive systemic mastocytosis

The code C96.21 is VALID for claim submission

Code Classification:

  • Neoplasms (C00–D49)
    • Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
      • Oth & unsp malig neoplm of lymphoid, hematpoetc and rel tiss (C96)
        • C96.21 Aggressive systemic mastocytosis

Code Version: 2022 ICD-10-CM


Synonyms

  • Aggressive lymphadenopathic mastocytosis with eosinophilia
  • Aggressive systemic mastocytosis
  • Malignant mastocytosis
  • Malignant mastocytosis
  • Systemic mast cell disease
  • Systemic mast cell disease

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
C96.21 Right Arrow 202.60 Mlg mast unsp xtrndl org
202.61 Mal mastocytosis head
202.62 Mal mastocytosis thorax
202.63 Mal mastocytosis abdom
202.64 Mal mastocytosis axilla
202.65 Mal mastocytosis inguin
202.66 Mal mastocytosis pelvic
202.67 Mal mastocytosis spleen
202.68 Mal mastocytosis mult

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
C96 Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue
C96.0 Multifocal and multisystemic (disseminated) Langerhans-cell histiocytosis
C96.2 Malignant mast cell neoplasm
C96.20 Malignant mast cell neoplasm, unspecified
C96.22 Mast cell sarcoma
C96.29 Other malignant mast cell neoplasm
C96.4 Sarcoma of dendritic cells (accessory cells)
C96.5 Multifocal and unisystemic Langerhans-cell histiocytosis
C96.6 Unifocal 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

This page was last updated on: 10/1/2023

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