CA0C

ICD-11 MMS 2026-01

Cyst or mucocele of nose or nasal sinus

Description

A condition which refers to diseases of the nose and nasal sinus that cause a cyst or mucocele. A mucocele is any dilatation (typically pathologic) with accumulation of mucus. Mucoceles are benign, epithelium-lined cysts filled with mucus, which can form in the paranasal sinuses. These structures may cause symptoms if sufficiently large or if exerting pressure on surrounding anatomic structures. Symptomatic mucoceles typically require surgical intervention. Mucoceles should be differentiated from sinus retention cysts. Unlike mucoceles, sinus retention cysts do not result in expansion and thinning of the bony sinus walls.

Index terms

  • Cyst or mucocele of nose or nasal sinus
  • cyst of sinus
  • mucocele of sinus
Show allHide
  • Cyst of maxillary sinus
  • cyst of maxillary antrum
  • Cyst of ethmoid sinus
  • Cyst of sinus ethmoidalis
  • Cyst of frontal sinus
  • Cyst of nasal sinus
  • nasal sinus cyst
  • Cyst of sphenoid sinus
  • cyst of sinus sphenoidalis
  • Cyst of turbinate
  • Mucocele of nasal sinus
  • accessory sinus mucocele
  • mucocele of the accessory sinus
  • mucous cyst of nasal sinus
  • nasal sinus mucocele
  • Mucocele of turbinate

Exclusions from above levels

  • CA22.0 – Chronic obstructive pulmonary disease with acute exacerbation, unspecified
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
Show allHide
  • 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

  • CA00 – Acute nasopharyngitis
  • CA01 – Acute sinusitis
  • CA02 – Acute pharyngitis
  • CA03 – Acute tonsillitis
  • CA04 – Acute laryngopharyngitis
  • CA05 – Acute laryngitis or tracheitis
  • CA06 – Acute obstructive laryngitis or epiglottitis
  • CA07 – Acute upper respiratory infections of multiple and unspecified sites
  • CA08 – Vasomotor or allergic rhinitis
  • CA09 – Chronic rhinitis, nasopharyngitis or pharyngitis
  • CA0A – Chronic rhinosinusitis
  • CA0B – Silent sinus syndrome
  • CA0D – Deviated nasal septum
  • CA0E – Hypertrophy of nasal turbinates
  • CA0F – Chronic diseases of tonsils or adenoids
  • CA0G – Chronic laryngitis or laryngotracheitis
  • CA0H – Diseases of vocal cords or larynx, not elsewhere classified
  • CA0J – Nasal polyp
  • CA0K – Abscess of upper respiratory tract
  • CA0Y – Other specified upper respiratory tract disorders
  • CA0Z – Upper respiratory tract disorders, unspecified

Foundation entity

Cyst or mucocele of nose or nasal sinus – http://id.who.int/icd/entity/319135602

Allowed postcoordination axes

Part of: 12: Diseases of the respiratory system