K09.9 – Cyst of oral region, unspecified
ICD-10-CM 2027 diagnosis code · Diseases of oral cavity and salivary glands
ICD-10-CM code
K09.9
- Code
K09.9(claims format:K099)- Description
- Cyst of oral region, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 11. Diseases of the digestive system (K00-K95)
- Block
- K00-K14 Diseases of oral cavity and salivary glands
- Parent codes
- K09
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
K09 – Cysts of oral region, not elsewhere classified
Includes:
- lesions showing histological features both of aneurysmal cyst and of another fibro-osseous lesion
Index terms for K09.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in K09
Frequently asked questions
What is ICD-10 code K09.9?
K09.9 is the ICD-10-CM code for cyst of oral region, unspecified, in the block K00-K14 (Diseases of oral cavity and salivary glands).
Is K09.9 a billable code?
Yes. K09.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does K09.9 belong to?
It belongs to category K09 – Cysts of oral region, not elsewhere classified.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.