2025 ICD-10-CM code K09.9
Cyst of oral region, unspecified.
Medical necessity must be established by documenting the presence of a cyst in the oral cavity, along with any associated signs or symptoms (e.g., pain, swelling, difficulty eating/speaking) that warrant medical attention and possible intervention.
In simple words: This code refers to a fluid-filled sac (cyst) in the mouth area that isn't defined by a more specific diagnosis.
This code represents a cyst within the oral region that is not otherwise specified.
Example 1: A patient presents with a small, asymptomatic cyst on the floor of their mouth. After examination and imaging, it is determined to be a benign cyst but its exact classification is unclear, so K09.9 is used., During a routine dental check-up, a cyst is discovered under the tongue. Biopsy results are inconclusive for specific categorization, making K09.9 applicable., A patient complains of a slightly painful swelling inside their cheek. Imaging reveals a cystic lesion, but the specific type cannot be determined even after further investigation, leading to the use of K09.9.
Clinical findings, location, and size of the cyst. Imaging results (e.g., X-ray, ultrasound, CT scan) and/or biopsy reports if performed. Any relevant lab tests. Differential diagnosis considerations and ruled-out conditions.
** Excludes cysts of jaw (M27.0-, M27.4-) and radicular cyst (K04.8)
- Specialties:Dentistry, Oral Surgery, Otolaryngology, General/Family Practice
- Place of Service:Office, Outpatient Hospital, Inpatient Hospital