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ICD-10-PCS Body System 9
Radiation Oncology, Ear, Nose, Mouth and Throat

The Ear, Nose, Mouth and Throat body system is identified by the character “9” in the 2nd character position and grouped within the Radiation Oncology section of the ICD-10-PCS coding structure. The 2nd character of an ICD-10-PCS code defines the particular body system or general physiological system or anatomical region involved.

ICD-10-PCS code structure

Section:
  D = Radiation Oncology

Body System:

See Terms used in Radiation Oncology

The 3rd character refers to the root operation or the objective of the procedure.

Ear, Nose, Mouth and Throat

  • D90 - Beam Radiation

  • D91 - Brachytherapy

  • D9Y - Other Radiation

  • D92 - Stereotactic Radiosurgery