ICD-10-CM
D89.40 - Mast cell activation, unspecified
Code
D89.40 - Mast cell activation, unspecified
[Billable]
[Billable]
Includes
- Mast cell activation disorder, unspecified
- Mast cell activation syndrome, NOS
Code Tree
D50-D89 - Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Citation
"D89.40 - Mast Cell Activation, Unspecified." ICD-10-CM, 10th ed., Centers for Medicare and Medicaid Services and the National Center for Health Statistics, 2026. www.unboundmedicine.com/icd/view/ICD-10-CM/967247/all/D89_40___Mast_cell_activation__unspecified.
D89.40 - Mast cell activation, unspecified. ICD-10-CM. Centers for Medicare and Medicaid Services and the National Center for Health Statistics; 2026. https://www.unboundmedicine.com/icd/view/ICD-10-CM/967247/all/D89_40___Mast_cell_activation__unspecified. Accessed June 6, 2026.
D89.40 - Mast cell activation, unspecified. (2026). In ICD-10-CM (10th ed.). Centers for Medicare and Medicaid Services and the National Center for Health Statistics. https://www.unboundmedicine.com/icd/view/ICD-10-CM/967247/all/D89_40___Mast_cell_activation__unspecified
D89.40 - Mast Cell Activation, Unspecified [Internet]. In: ICD-10-CM. Centers for Medicare and Medicaid Services and the National Center for Health Statistics; 2026. [cited 2026 June 06]. Available from: https://www.unboundmedicine.com/icd/view/ICD-10-CM/967247/all/D89_40___Mast_cell_activation__unspecified.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - D89.40 - Mast cell activation, unspecified
ID - 967247
BT - ICD-10-CM
UR - https://www.unboundmedicine.com/icd/view/ICD-10-CM/967247/all/D89_40___Mast_cell_activation__unspecified
PB - Centers for Medicare and Medicaid Services and the National Center for Health Statistics
ET - 10
DB - ICD-10-CM
DP - Unbound Medicine
ER -
