Q18.1 Preauricular sinus and cyst
Instructional Notes:
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Q18.1
Description: Preauricular sinus and cyst
Inclusion Term:
- Fistula of auricle, congenital
- Cervicoaural fistula
↓
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Q18
Description: Other congenital malformations of face and neck
Exclude1:
- cleft lip and cleft palate (Q35-Q37)
- conditions classified to Q67.0-Q67.4
- congenital malformations of skull and face bones (Q75.-)
- cyclopia (Q87.0)
- dentofacial anomalies [including malocclusion] (M26.-)
- malformation syndromes affecting facial appearance (Q87.0)
- persistent thyroglossal duct (Q89.2)
↓
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Q10-Q18
Description: Congenital malformations of eye, ear, face and neck (Q10-Q18)
Exclude2:
- cleft lip and cleft palate (Q35-Q37)
- congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4)
- congenital malformation of larynx (Q31.-)
- congenital malformation of lip NEC (Q38.0)
- congenital malformation of nose (Q30.-)
- congenital malformation of parathyroid gland (Q89.2)
- congenital malformation of thyroid gland (Q89.2)
↓
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Q00-Q99
Description: Congenital malformations, deformations and chromosomal abnormalities
Exclude2:
- inborn errors of metabolism (E70-E88)
Notes:
- Codes from this chapter are not for use on maternal records