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D89.40

Mast cell activation, unspecified

Billable

Code Hierarchy

D89D89.4D89.40

Chapter: 3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

Section: D80-D89 - Certain disorders involving the immune mechanism

Coding Guidelines

Inclusion Terms

  • Mast cell activation disorder, unspecified
  • Mast cell activation syndrome, NOS

Related Codes

D89.41Billable

Monoclonal mast cell activation syndrome

D89.42Billable

Idiopathic mast cell activation syndrome

D89.43Billable

Secondary mast cell activation

D89.44Billable

Hereditary alpha tryptasemia

D89.49Billable

Other mast cell activation disorder

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