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Code System Concept

Code System Concept Code	1260202003
Code System Concept Name	Monoclonal mast cell activation syndrome (disorder)
Code System Preferred Concept Name	Monoclonal mast cell activation syndrome (disorder)
Concept Status	Published
Concept Status Date	09/01/2024
Code System Name	SNOMED-CT

Concept Relationships
Concept Details

Concept Details

Code System Code	PH_SNOMED-CT
Code System OID	2.16.840.1.113883.6.96
HL7 Table 0396 Code	SCT
Superseded By Concept
SDO Concept Status	Active
SDO Concept Status Date	03/01/2024
SDO Date Created	01/31/2023
SDO Date Revised	01/31/2023
Description	A rare hematologic disease characterized by symptoms of mast cell activation in the absence of cutaneous findings, as well as absence of diagnostic criteria of systemic mastocytosis with tryptase levels of less than 20 mg/ml and normal to low burden of mast cells. Bone marrow biopsy reveals the presence of monoclonal mast cells carrying the KIT D816V mutation and/or expressing CD25. Symptoms include recurrent episodes of flushing, headache, hypotension, abdominal cramping, nausea, diarrhea, cardiac arrhythmia, bronchoconstriction and bleeding diathesis.
Sequence

Extended Properties

No extended properties.

Concept Alternate Designations

SDO Designation ID	Concept Designation Description	Status	Designation Type	PHIN Preferred Term Flag	Code Flag
5159702014	Monoclonal MCAD (mast cell activation disorder)	Active	Synonym	false	false
5159704010	Monoclonal mast cell activation syndrome	Active	Synonym	false	false

Associated Value Sets

Value Set Name	Version(s)
Clinical Finding (NNDSS)	2 , 1

Parent Concepts Parent Concepts Parent/Child (Relationship Type) Mast cell activation syndrome (disorder) {16697871000119100 , SNOMED-CT } Monoclonal gammopathy (disorder) {109983007 , SNOMED-CT }	Other Relationships No other relationships present.
Child Concepts No child concepts present.

Page last reviewed:June 20, 2024
Page last updated:June 20, 2024
Content source:
- Centers for Disease Control and Prevention,