Is Q18.0 a billable code?
Yes. Q18.0 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
Q18.0: Sinus, fistula and cyst of branchial cleft
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
Q18.0 is a billable ICD-10-CM diagnosis code for sinus, fistula and cyst of branchial cleft. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with Q18.0 already added.Good Faith EstimateStart a cost estimate with Q18.0 already added.CMS-1500 Claim FormFill a claim form with Q18.0 in box 21.
Other codes in Q18 Other congenital malformations of face and neck
Q18.0 questions
What does Q18.0 mean?
Q18.0 is the ICD-10-CM code for Sinus, fistula and cyst of branchial cleft. It is in chapter 17, Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.