ICD-11 classes
12 Diseases of the respiratory system
Upper respiratory tract disorders
CA02 — Acute pharyngitis

ICD-11 CA02 — Acute pharyngitis

Acute pharyngitis is defined as an infection or irritation of the pharynx and/or tonsils and is a part of the common cold symptoms. The etiology is usually infectious, with most cases being of viral origin. Although virus infection is the primary cause, it is also caused by bacterial infection. The discomfort of a throat, a throat pain and swallowing pain often occur. Headache, general fatigueness, radiating pain to the ear and a cervical lymphadenitis also occur. Local finding demonstrates hyperaemic palatine tonsils and swelling of lymphoid follicles of posterior wall of pharynx. Patients with acute pharyngitis present most commonly with a sore throat. Other various symptoms can rise in these patients depending on their causing organisms.

Diagnosis with code CA02 contains 5 clarifying diagnoses:

1. CA02.0 — Acute pharyngitis due to other bacteria
   It contains 1 clarifying diagnosis.
2. CA02.1 — Acute viral pharyngitis
   It contains 4 clarifying diagnoses.
3. 1B51 — Streptococcal pharyngitis
4. CA02.Y — Other specified acute pharyngitis
5. CA02.Z — Acute pharyngitis, unspecified