ICD-10 CM Code D89.43
- D89 Other disorders involving the immune mechanism, not elsewhere classified
- D89.4 Mast cell activation syndrome and related disorders
D89.43
Secondary mast cell activation
Inclusion Term
- Secondary mast cell activation syndrome
Excludes Type 1
- aggressive systemic mastocytosis (C96.21)
- congenital cutaneous mastocytosis (Q82.2)
- (non-congenital) cutaneous mastocytosis (D47.01)
- (indolent) systemic mastocytosis (D47.02)
- malignant mast cell neoplasm (C96.2-)
- malignant mastocytoma (C96.29)
- mast cell leukemia (C94.3-)
- mast cell sarcoma (C96.22)
- mastocytoma NOS (D47.09)
- other mast cell neoplasms of uncertain behavior (D47.09)
- systemic mastocytosis associated with a clonal hematologic non-mast cell lineage disease (SM-AHNMD) (D47.02)
- hyperglobulinemia NOS (R77.1)
- monoclonal gammopathy (of undetermined significance) (D47.2)
Excludes Type 2
- transplant failure and rejection (T86.-)
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