Diagnosis Code

Q18.1 PREAURICULAR SINUS AND CYST


Code Information

Diagnosis Code: Q18.1

Short Description: Preauricular sinus and cyst

Long Description: Preauricular sinus and cyst

The code Q18.1 is VALID for claim submission

Code Classification:

  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • Congenital malformations of eye, ear, face and neck (Q10-Q18)
      • Other congenital malformations of face and neck (Q18)
        • Q18.1 Preauricular sinus and cyst

Code Version: 2022 ICD-10-CM


Synonyms

  • Bilateral preauricular regions cyst
  • Congenital cervicoaural fistula
  • Congenital cyst of pinna of ear
  • Congenital fistula of pinna of ear
  • Cyst of left preauricular region
  • Cyst of pinna
  • Cyst of right preauricular region
  • Fistula colli congenita
  • Fistula of branchial cleft
  • Hypertelorism
  • Hypertelorism, preauricular sinus, punctual pits, deafness syndrome
  • Infection of preauricular sinus
  • Mass of preauricular region
  • Mass of preauricular region
  • Mass of preauricular region
  • Mass of preauricular region
  • Preauricular cyst
  • Preauricular fistula
  • Preauricular fistula

Diagnostic Related Group(s)

The code Q18.1 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Other Ear, Nose, Mouth And Throat Diagnoses With Mcc (154)
  • Other Ear, Nose, Mouth And Throat Diagnoses With Cc (155)
  • Other Ear, Nose, Mouth And Throat Diagnoses Without Cc/mcc (156)

References to Index of Diseases and Injuries

The code Q18.1 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Fistula of auricle, congenital
    • Cervicoaural fistula

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
Q18.1 Right Arrow 744.46 Preauricular sinus/fistu
744.47 Preauricular cyst

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
Q18 Other congenital malformations of face and neck
Q18.0 Sinus, fistula and cyst of branchial cleft
Q18.2 Other branchial cleft malformations
Q18.3 Webbing of neck
Q18.4 Macrostomia
Q18.5 Microstomia
Q18.6 Macrocheilia
Q18.7 Microcheilia
Q18.8 Other specified congenital malformations of face and neck
Q18.9 Congenital malformation of face and neck, unspecified


This page was last updated on: 10/1/2023