Rapid rise in unspecified mast cell activation diagnosis code usage in the United States

J Allergy Clin Immunol Pract. 2025 Jun 16:S2213-2198(25)00589-6. doi: 10.1016/j.jaip.2025.06.009. Online ahead of print.

¹ Center for Esophageal Diseases and Swallowing.
² Allergy Mast Cell Disorders Program; Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology; and.
³ Allergy Mast Cell Disorders Program; Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology; and; Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC.
⁴ Center for Esophageal Diseases and Swallowing; Center for Gastrointestinal Biology and Disease, Division of Gastroenterology and Hepatology,; Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC.
⁵ Allergy Mast Cell Disorders Program; Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology; and; Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC. Electronic address: onyinye.iweala@med.unc.edu.

No abstract available

Keywords: MCAS; epidemiology; mast cell activation; prevalence; sex differences.