MCMedicalCodingSoftware
D9Y4CZZ

D9Y4CZZIntraoperative Radiation Therapy (IORT) of Mouth

Billable / specific codeICD-10-PCS

CMS abbreviated title: Intraoperative Radiation Therapy (IORT) of Mouth

How D9Y4CZZ is built

Every ICD-10-PCS code is seven independent character positions. Each one is a separate decision, and the meaning of a character depends on the positions before it.

  1. DSectionRadiation Therapy — What family of procedure this is
  2. 9Body systemWhich system it acts on
  3. YRoot operationThe objective — the verb of the procedure
  4. 4Body partThe specific site
  5. CApproachHow the site was reached
  6. ZDeviceWhat was left in place, if anything
  7. ZQualifierA further distinction where one applies

Codes near D9Y4CZZ

In CMS’s own ordering, which groups codes that differ by only the last character or two — usually the approach, device or qualifier.

  • D9Y0FZZPlaque Radiation of Ear
  • D9Y17ZZContact Radiation of Nose
  • D9Y18ZZHyperthermia of Nose
  • D9Y1FZZPlaque Radiation of Nose
  • D9Y37ZZContact Radiation of Hypopharynx
  • D9Y38ZZHyperthermia of Hypopharynx
  • D9Y47ZZContact Radiation of Mouth
  • D9Y48ZZHyperthermia of Mouth
  • D9Y4CZZIntraoperative Radiation Therapy (IORT) of Mouth
  • D9Y4FZZPlaque Radiation of Mouth
  • D9Y57ZZContact Radiation of Tongue
  • D9Y58ZZHyperthermia of Tongue
  • D9Y5FZZPlaque Radiation of Tongue
  • D9Y67ZZContact Radiation of Salivary Glands
  • D9Y68ZZHyperthermia of Salivary Glands
  • D9Y6FZZPlaque Radiation of Salivary Glands
  • D9Y77ZZContact Radiation of Sinuses
ICD-10-PCSFY2026