K09
Header — not billableCysts of oral region, not elsewhere classified
The ICD-10 code for cysts of oral region, not elsewhere classified is K09.
K09 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Clinical notes
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
Includes
Terms listed here further define or give examples of the conditions grouped under this code — they describe what the code covers, not a separate diagnosis.
- lesions showing histological features both of aneurysmal cyst and of another fibro-osseous lesion
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- K00Disorders of tooth development and eruptionnon-billable header
- K01Embedded and impacted teethnon-billable header
- K02Dental cariesnon-billable header
- K03Other diseases of hard tissues of teethnon-billable header
- K04Diseases of pulp and periapical tissuesnon-billable header
- K05Gingivitis and periodontal diseasesnon-billable header
- K06Other disorders of gingiva and edentulous alveolar ridgenon-billable header
- K08Other disorders of teeth and supporting structuresnon-billable header
- K11Diseases of salivary glandsnon-billable header
- K12Stomatitis and related lesionsnon-billable header
- K13Other diseases of lip and oral mucosanon-billable header
- K14Diseases of tonguenon-billable header
- K09Cysts of oral region, not elsewhere classifiednon-billable header