Q18.0
BillableSinus, fistula and cyst of branchial cleft
Sinus, fistula and cyst of branchial cleft
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Branchial vestige
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •inborn errors of metabolismE70-E88
- •cleft lip and cleft palateQ35-Q37
- •congenital malformation of cervical spine, , ,Q05.0, Q05.5, Q67.5, Q76.0-Q76.4
- •congenital malformation of larynxQ31
- •congenital malformation of lip NECQ38.0
- •congenital malformation of noseQ30
- •congenital malformation of parathyroid glandQ89.2
- •congenital malformation of thyroid glandQ89.2
Related Codes(9)
Q18.1Preauricular sinus and cyst
Q18.2Other branchial cleft malformations
Q18.3Webbing of neck
Q18.4Macrostomia
Q18.5Microstomia
Q18.6Macrocheilia
Q18.7Microcheilia
Q18.8Other specified congenital malformations of face and neck
Q18.9Congenital malformation of face and neck, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(55)
SNOMED CT
- Branchial cleft cyst59857007
- Branchial cyst59857007
- Cyst of branchial cleft59857007
- Branchial cleft external sinus204266007
- Branchial cleft internal sinus204267003
- Branchial cleft fistula204268008
- Branchial fistula204268008
- Fistula of branchial cleft204268008
- Branchial cleft sinus253259008
- Sinus of branchial cleft253259008
- Branchial cleft sinus and fistula268173005
- Fourth branchial cleft cyst707234001
- Type 4 branchial cleft cyst707234001
- Congenital anomaly of first branchial cleft1003399005
- Congenital anomaly of second branchial cleft1231169000
- Second branchial cleft anomaly1231169000
- Congenital anomaly of third branchial cleft1231170004
- Third branchial cleft anomaly1231170004
- Congenital anomaly of fourth branchial cleft1231175009
- Fourth branchial cleft anomaly1231175009
- First branchial cleft cyst73371000119103
- Type 1 branchial cleft cyst73371000119103
- Second branchial cleft cyst73381000119100
- Type 2 branchial cleft cyst73381000119100
- Third branchial cleft cyst73391000119102
- Type 3 branchial cleft cyst73391000119102
Clinical Terms
- Branchial cleft sinus and fistula
- Cyst of branchial cleft
- Second branchial cleft cyst
- Branchial cleft cyst
- Branchial cleft sinus
- Branchial cleft internal sinus
- Second branchial cleft anomaly
- First branchial cleft cyst
- Sinus of branchial cleft
- Type 1 branchial cleft cyst
- Branchial cleft fistula
- Type 4 branchial cleft cyst
- Branchial cyst
- Congenital anomaly of fourth branchial cleft
- Fourth branchial cleft cyst
- Fourth branchial cleft anomaly
- Branchial cleft external sinus
- Type 2 branchial cleft cyst
- Fistula of branchial cleft
- Branchial vestige
- Branchial fistula
- Type 3 branchial cleft cyst
- Third branchial cleft anomaly
- Congenital anomaly of first branchial cleft
- Congenital anomaly of second branchial cleft
- Congenital anomaly of third branchial cleft
- Third branchial cleft cyst
Frequently Asked Questions
What is the ICD-10 code for sinus, fistula and cyst of branchial cleft?
The ICD-10-CM code for sinus, fistula and cyst of branchial cleft is Q18.0. The full clinical description is "Sinus, fistula and cyst of branchial cleft". Q18.0 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code Q18.0 mean?
ICD-10-CM code Q18.0 represents “Sinus, fistula and cyst of branchial cleft”. It is classified under Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities and is a billable/specific code that can be used on a claim.
Is Q18.0 a billable code?
Yes, Q18.0 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is Q18.0 in?
Q18.0 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).
What codes cannot be used with Q18.0?
Q18.0 has Excludes1 notes indicating codes that cannot be used together with it, including: cleft lip and cleft palate (Q35-Q37); conditions classified to Q67.0-Q67.4; congenital malformations of skull and face bones (Q75.-); and 4 more.
What SNOMED CT codes does Q18.0 map to?
Q18.0 maps to 14 SNOMED CT concepts: 59857007, 204266007, 204268008, 204267003, 253259008, and 9 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for Q18.0?
Q18.0 is linked to 2 UMLS Concept Unique Identifiers: C0431493, C0495505. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does Q18.0 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like sinus, fistula and cyst of branchial cleft affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of Q18.0?
Q18.0 maps to the ICD-11 code: LD0Z (Structural developmental anomalies primarily affecting one body system, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.