K09: Cysts of oral region, not elsewhere classified
Codes under K09 (Cysts of oral region, not elsewhere classified). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| K09.0 | Developmental odontogenic cysts | ✓ |
| K09.0 | Developmental odontogenic cysts | ✓ |
| K09.1 | Developmental (nonodontogenic) cysts of oral region | ✓ |
| K09.1 | Developmental (nonodontogenic) cysts of oral region | ✓ |
| K09.8 | Other cysts of oral region, not elsewhere classified | ✓ |
| K09.8 | Other cysts of oral region, not elsewhere classified | ✓ |
| K09.9 | Cyst of oral region, unspecified | ✓ |
| K09.9 | Cyst of oral region, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code K09?
K09 is an ICD-10-CM category covering Cysts of oral region, not elsewhere classified. It contains 8 more specific diagnosis codes, 8 of which are billable.
Is K09 a billable code?
No — K09 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example K09.0 — Developmental odontogenic cysts). 8 of the 8 codes under K09 are billable.
What codes fall under K09?
K09 includes K09.0, K09.0, K09.1, K09.1, K09.8, plus 3 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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