1. ICD.Codes
2. ICD-10-PCS
3. D - Radiation Therapy
4. D9 - Ear, Nose, Mouth and Throat

ICD-10-PCS - Medical and Surgical

ICD-PCS-10 Code D9 has four sub-sections, listed below, which contain codes used for procedures that relate to the Ear, Nose, Mouth and Throat body system.