D89.4 ICD 10 Code is a non-billable and non-specific code and should not be used to indicate a diagnosis for reimbursement purposes. There are other codes below it with greater level of diagnosis detail. The 2023 edition of the American ICD-10-CM code became effective on October 1, 2022.
Type 1 excludes for D89.4 ICD 10 code
- 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)
Codes
- D89.40 Mast cell activation, unspecified
- D89.41 Monoclonal mast cell activation syndrome
- D89.42 Idiopathic mast cell activation syndrome
- D89.43 Secondary mast cell activation
- D89.49 Other mast cell activation disorder
Possible back-references that may be applicable or related to D89.4 ICD10 Code:
- D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- D80-D89 Certain disorders involving the immune mechanism
- D89 Other disorders involving the immune mechanism, not elsewhere classified
Present On Admission (POA Exempt)
D89.4 ICD 10 code is considered exempt from POA reporting