Infectious mononucleosis (B27)

Browse all the diagnosis codes used for infectious mononucleosis (b27). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Clinical Information

Fatigue Syndrome, Chronic - A syndrome characterized by persistent or recurrent fatigue, diffuse musculoskeletal pain, sleep disturbances, and subjective cognitive impairment of 6 months duration or longer. Symptoms are not caused by ongoing exertion; are not relieved by rest; and result in a substantial reduction of previous levels of occupational, educational, social, or personal activities. Minor alterations of immune, neuroendocrine, and autonomic function may be associated with this syndrome. There is also considerable overlap between this condition and FIBROMYALGIA. (From Semin Neurol 1998;18(2):237-42; Ann Intern Med 1994 Dec 15;121(12): 953-9)

Fibromyalgia - A common nonarticular rheumatic syndrome characterized by myalgia and multiple points of focal muscle tenderness to palpation (trigger points). Muscle pain is typically aggravated by inactivity or exposure to cold. This condition is often associated with general symptoms, such as sleep disturbances, fatigue, stiffness, HEADACHES, and occasionally DEPRESSION. There is significant overlap between fibromyalgia and the chronic fatigue syndrome (FATIGUE SYNDROME, CHRONIC). Fibromyalgia may arise as a primary or secondary disease process. It is most frequent in females aged 20 to 50 years. (From Adams et al., Principles of Neurology, 6th ed, p1494-95)

Herpesvirus 4, Human - The type species of LYMPHOCRYPTOVIRUS, subfamily GAMMAHERPESVIRINAE, infecting B-cells in humans. It is thought to be the causative agent of INFECTIOUS MONONUCLEOSIS and is strongly associated with oral hairy leukoplakia (LEUKOPLAKIA, HAIRY;), BURKITT LYMPHOMA; and other malignancies.

Infectious Mononucleosis - 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.

Instructional Notations

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

  • glandular fever
  • monocytic angina
  • Pfeiffer's disease
  • Certain infectious and parasitic diseases (A00–B99)

    • Other viral diseases (B25-B34)

        • Infectious mononucleosis (B27)

        • B27 Infectious mononucleosis
        • B27.0 Gammaherpesviral mononucleosis
        • B27.00 Gammaherpesviral mononucleosis without complication
        • B27.01 Gammaherpesviral mononucleosis with polyneuropathy
        • B27.02 Gammaherpesviral mononucleosis with meningitis
        • B27.09 Gammaherpesviral mononucleosis with other complications
        • B27.1 Cytomegaloviral mononucleosis
        • B27.10 Cytomegaloviral mononucleosis without complications
        • B27.11 Cytomegaloviral mononucleosis with polyneuropathy
        • B27.12 Cytomegaloviral mononucleosis with meningitis
        • B27.19 Cytomegaloviral mononucleosis with other complication
        • B27.8 Other infectious mononucleosis
        • B27.80 Other infectious mononucleosis without complication
        • B27.81 Other infectious mononucleosis with polyneuropathy
        • B27.82 Other infectious mononucleosis with meningitis
        • B27.89 Other infectious mononucleosis with other complication
        • B27.9 Infectious mononucleosis, unspecified
        • B27.90 Infectious mononucleosis, unspecified without complication
        • B27.91 Infectious mononucleosis, unspecified with polyneuropathy
        • B27.92 Infectious mononucleosis, unspecified with meningitis
        • B27.99 Infectious mononucleosis, unspecified with other complication