Non-Billable / Non-Specific Code
ICD-10-CM K09 is the diagnosis code for Cysts of oral region, not elsewhere classified. This code falls under the section "Diseases of oral cavity and salivary glands" within Chapter 11 â Diseases of the digestive system (K00-K95). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions are not included in K09. If the patient has both, code each condition separately:
Understanding where K09 sits in the ICD-10-CM classification helps ensure proper coding:
No, K09 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
K09 is the ICD-10-CM diagnosis code for "Cysts of oral region, not elsewhere classified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
K09 is located in Section K00-K14 â "Diseases of oral cavity and salivary glands" within Chapter 11 of the ICD-10-CM Tabular List.
K09 has 4 sub-code(s) that provide more specific detail: K09.0, K09.1, K09.8, K09.9.
Use K09 when the patients documented diagnosis matches "Cysts of oral region, not elsewhere classified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Cysts of oral region, not elsewhere classified is K09.
No, K09 is non-billable. Use a more specific sub-code for primary diagnosis billing.
K09 is in Chapter 11 of the ICD-10-CM Tabular List.
Yes, K09 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.