Other cysts of oral region, not elsewhere classified

This code identifies various non-odontogenic cysts affecting the oral cavity and surrounding structures, such as the lips, cheeks, palate, or floor of the mouth, that are not specifically classified elsewhere. These are typically benign, fluid-filled sacs that can arise from developmental anomalies or other non-dental origins.

Apply this code for documented oral cysts that do not originate from tooth-forming tissues (e.g., radicular, dentigerous cysts) and are not specified by a more precise ICD-10-CM code. Documentation should clearly state the location and nature of the cyst, confirming it is not odontogenic or otherwise classified.

• Ensure the documentation explicitly rules out an odontogenic origin; if odontogenic, a more specific K04.8 or K04.9 code may be appropriate.
• Avoid using this code if a more specific anatomical site or type of oral cyst (e.g., mucocele, ranula) has its own dedicated code.
• Confirm that the cyst is indeed "oral region" and not a cyst of the salivary gland (K11.-) or jaw (K10.0-K10.2), which have distinct code categories.