K09Header code — not billable
Cysts of oral region, not elsewhere classified
- Chapter
- 11. Diseases of the digestive system
- Category
- K09
- Effective date
- October 1, 2026
Related codes in category K09
Frequently asked questions
What is ICD-10 code K09?
K09 is an ICD-10-CM diagnosis code for Cysts of oral region, not elsewhere classified.
Is K09 a billable code?
No. K09 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 K09 in?
K09 falls under Chapter 11: Diseases of the digestive system.
When did K09 become effective?
K09 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to K09?
K09 belongs to category K09, which includes 4 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.