Q18Header code — not billable
Other congenital malformations of face and neck
- Chapter
- 17. Congenital malformations, deformations and chromosomal abnormalities
- Category
- Q18
- Effective date
- October 1, 2026
Related codes in category Q18
Q18.0Sinus, fistula and cyst of branchial cleftYesQ18.1Preauricular sinus and cystYesQ18.2Other branchial cleft malformationsYesQ18.3Webbing of neckYesQ18.4MacrostomiaYesQ18.5MicrostomiaYesQ18.6MacrocheiliaYesQ18.7MicrocheiliaYesQ18.8Other specified congenital malformations of face and neckYesQ18.9Congenital malformation of face and neck, unspecifiedYes
Frequently asked questions
What is ICD-10 code Q18?
Q18 is an ICD-10-CM diagnosis code for Other congenital malformations of face and neck.
Is Q18 a billable code?
No. Q18 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is Q18 in?
Q18 falls under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities.
When did Q18 become effective?
Q18 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Q18?
Q18 belongs to category Q18, which includes 10 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.