A patient with squamous cell carcinoma of the left anterior floor of mouth presents for excision of the carcinoma. We are not sure what body part value to assign for the floor of mouth. What is the appropriate code assignment for this procedure?
In ICD-10-PCS, there is no single body part value describing “floor of the mouth.” The default body part is oral cavity and throat. The “Oral Cavity and Throat” body part value is not available in the “Excision” root operation table. The root operation “Extirpation” is the closest equivalent, and is defined as taking or cutting out solid matter from a body part. Assign the following ICD-10-PCS code:
0WC30ZZ - Extirpation of matter from oral cavity and throat, open approach
CMS is considering future modifications to the ICD-10-PCS tables for coding procedures on the floor of the mouth, through the ICD-10 Coordination and Maintenance Committee process.