NEW! - AMA CPT Advanced Coding Pack

×

Unlock the full potential of your medical coding capabilities with the CPT® Advanced Coding Pack from the American Medical Association (AMA). Designed for professional medical coders, auditors, and billers like you, this comprehensive suite of resources provides everything you need to navigate the complexities of the CPT code set with confidence and precision.

 

Advanced Coding Pack includes:

1. CPT Assistant - Newsletter with official education and guidance
2. CPT Knowledge Base - Commonly asked coding questions answered by the experts
3. CPT Vignettes - Comprehensive clinical examples.

Add to your Find-A-Code subscription for $300 / person

Learn More and Subscribe

close

2A21 Mastocytosis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Mastocytosis is due to a clonal, neoplastic proliferation of mast cells that accumulate in one or more organ systems. Activating mutations of KIT are frequently found. It is characterised by the presence of multifocal compact clusters or cohesive aggregates/infiltrates of abnormal mast cells. The disorder is heterogeneous, ranging from skin lesions that may spontaneously regress to highly aggressive neoplasms associated with multiorgan failure and short survival. Subtypes of mastocytosis are recognised mainly by the distribution of the disease and clinical manifestations. In cutaneous mastocytosis (CM), the mast cell infiltration remains confined to the skin, whereas systemic mastocytosis (SM) is characterised by involvement of at least one extracutaneous organ with or without evidence of skin lesions. Mastocytosis should be strictly separated from mast cell hyperplasia or mast cell activation states without morphological and/or molecular abnormalities that characterize the neoplastic proliferation.

sections/codes in this section (2A21-2A21)

• Systemic mastocytosis  (2A21.0)
• Cutaneous mastocytosis  (2A21.1)
• Mast cell sarcoma  (2A21.2)
• Extracutaneous mastocytoma  (2A21.3)
• Other specified mastocytosis  (2A21.Y)
• Mastocytosis, unspecified  (2A21.Z)

postcoordination

Thank you for choosing Find-A-Code, please Sign In to remove ads.