K09
K09 — Cysts of oral region, not elsewhere classified
Non-billable headerICD-10-CM
K09 is a non-billable header ICD-10-CM code for cysts of oral region, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Includes
Conditions this code covers.
- lesions showing histological features both of aneurysmal cyst and of another fibro-osseous lesion
Other codes that can never be billed with K09
These codes carry an Excludes1 note pointing at K09. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading K09 alone.
- M27.4Other and unspecified cysts of jaw
Risk adjustment
K09 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead K09
4 child codes. Green means billable.
Questions about K09
- Is K09 a billable ICD-10-CM code?
- No. K09 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does K09 sit in the tabular list?
- Diseases of the digestive system (K00-K95), in the block Diseases of oral cavity and salivary glands (K00-K14).