CA03.0

ICD-11 MMS 2026-01

Streptococcal tonsillitis

Description

A disease of the tonsils, caused by an infection with the gram-positive bacteria Streptococcus pyogenes (Streptococcus group A). This disease is characterised by a sore throat, fever, tonsillar exudates, or cervical adenopathy. This disease may also present with odynophagia, dysphagia, otalgia, dry tongue, erythematous, enlarged tonsils, or yellowish white spots on the tonsils. Transmission is commonly by inhalation of infected respiratory secretions or indirect contact. Confirmation is by identification of Streptococcus group A from a throat swab.

Index terms

  • Streptococcal tonsillitis
  • acute streptococcal tonsillitis

Exclusions from above levels

  • 1B51 – Streptococcal pharyngitis
  • CA02 – Acute pharyngitis
  • CA0K.1 – Peritonsillar abscess
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  • CA22.0 – Chronic obstructive pulmonary disease with acute exacerbation, unspecified
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 20 – Congenital malformations, deformations and chromosomal abnormalities
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • CA03.Y – Other specified acute tonsillitis
  • CA03.Z – Acute tonsillitis, unspecified

Foundation entity

Streptococcal tonsillitis – http://id.who.int/icd/entity/2098808565

Allowed postcoordination axes

Part of: CA03: Acute tonsillitis › 12: Diseases of the respiratory system