D89.4 - Mast cell activation syndrome and related disorders

  • Applicable to Mast cell activation syndrome and related disorders
  • The 2025 edition of ICD10-CM D89.4 became effective on October 1, 2024.
  • This is the American ICD10-CM version of D89.4 - other international versions of ICD10 D89.4 may differ.
  • D89.4 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • D89.4 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.
  • D89.4 - Mast cell activation syndrome and related disorders
    • D89.4 - Mast cell activation syndrome and related disorders
    • 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
    • D89.44 - Hereditary alpha tryptasemia
    • D89.49 - Other mast cell activation disorder

Type 1 Excludes

  • 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)

The following codes above D89.4 contain annotation back-references that may be applicable to D89.4:

Chapter: D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

Section: D80-D89 Certain disorders involving the immune mechanism

Category: D89 Other disorders involving the immune mechanism, not elsewhere classified

   
Non-Billable/Non-Specific Code

Browse other similar CM codes

                            

Please, give attribution to our website icd-10code.com