D89.49
BillableOther mast cell activation disorder
D89.49 is the ICD-10-CM code for Other mast cell activation disorder. It is a billable, specific code valid for reimbursement.
D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Includes
- •Other mast cell activation syndrome
Frequently asked questions
- What is ICD-10 code D89.49?
- D89.49 is the ICD-10-CM code for "Other mast cell activation disorder". It falls under D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
- Is D89.49 a billable code?
- Yes — D89.49 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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