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Ch. 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
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Certain disorders involving the immune mechanism (D80-D89)
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D89.4 Mast cell activation syndrome and related disorders
› D89.44
D89.44
Hereditary alpha tryptasemia
ICD-10-CM billable/specific code — part of Certain disorders involving the immune mechanism (D80-D89)
Code Details
Billable
Yes
Chapter
Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
Section
Certain disorders involving the immune mechanism (D80-D89)
Parent code
D89.4 — Mast cell activation syndrome and related disorders
Coding Notes
Use Additional Code
code, if applicable, for:
allergy status, other than to drugs and biological substances (Z91.0-)
personal history of anaphylaxis (Z87.892)
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