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D91D9YZ

D91D9YZ — High Dose Rate (HDR) Brachytherapy of Nasopharynx using Other Isotope

Billable / specific codeICD-10-PCS

CMS abbreviated title: HDR Brachytherapy of Nasopharynx using Oth Isotope

How D91D9YZ 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. 1Root operationThe objective — the verb of the procedure
  4. DBody partThe specific site
  5. 9ApproachHow the site was reached
  6. YDeviceWhat was left in place, if anything
  7. ZQualifierA further distinction where one applies

Codes near D91D9YZ

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

  • D91BBBZLow Dose Rate (LDR) Brachytherapy of Larynx using Palladium 103 (Pd-103)
  • D91BBCZLow Dose Rate (LDR) Brachytherapy of Larynx using Californium 252 (Cf-252)
  • D91BBYZLow Dose Rate (LDR) Brachytherapy of Larynx using Other Isotope
  • D91D97ZHigh Dose Rate (HDR) Brachytherapy of Nasopharynx using Cesium 137 (Cs-137)
  • D91D98ZHigh Dose Rate (HDR) Brachytherapy of Nasopharynx using Iridium 192 (Ir-192)
  • D91D99ZHigh Dose Rate (HDR) Brachytherapy of Nasopharynx using Iodine 125 (I-125)
  • D91D9BZHigh Dose Rate (HDR) Brachytherapy of Nasopharynx using Palladium 103 (Pd-103)
  • D91D9CZHigh Dose Rate (HDR) Brachytherapy of Nasopharynx using Californium 252 (Cf-252)
  • D91D9YZHigh Dose Rate (HDR) Brachytherapy of Nasopharynx using Other Isotope
  • D91DB6ZLow Dose Rate (LDR) Brachytherapy of Nasopharynx using Cesium 131 (Cs-131)
  • D91DB7ZLow Dose Rate (LDR) Brachytherapy of Nasopharynx using Cesium 137 (Cs-137)
  • D91DB8ZLow Dose Rate (LDR) Brachytherapy of Nasopharynx using Iridium 192 (Ir-192)
  • D91DB9ZLow Dose Rate (LDR) Brachytherapy of Nasopharynx using Iodine 125 (I-125)
  • D91DBB1Low Dose Rate (LDR) Brachytherapy of Nasopharynx using Palladium 103 (Pd-103), Unidirectional Source
  • D91DBBZLow Dose Rate (LDR) Brachytherapy of Nasopharynx using Palladium 103 (Pd-103)
  • D91DBCZLow Dose Rate (LDR) Brachytherapy of Nasopharynx using Californium 252 (Cf-252)
  • D91DBYZLow Dose Rate (LDR) Brachytherapy of Nasopharynx using Other Isotope
ICD-10-PCSFY2026