B27.9

Clinical Information

• A common, acute infection usually caused by the epstein-barr virus herpesvirus 4, human). There is an increase in mononuclear white blood cells and other atypical lymphocytes, generalized lymphadenopathy, splenomegaly, and occasionally hepatomegaly with hepatitis.

• Acute disease characterized by fever and swollen lymph nodes and an abnormal increase of mononuclear leucocytes or monocytes in the bloodstream; not highly contagious; some believe it can be transmitted by kissing.

• Infectious mononucleosis, or “mono”, is an infection caused by the epstein-barr virus. The virus spreads through saliva, which is why it’s sometimes called “kissing disease.” mono occurs most often in 15 to 17-year-olds. However, you can get it at any age. Symptoms of mono include

Details

• B27.9 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.

• The 2023 edition of ICD-10-CM B27.9 became effective on October 1, 2022.

• This is the American ICD-10-CM version of B27.9 – other international versions of ICD-10 B27.9 may differ.