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ICD-10-PCS 2027 procedure code

D91B9YZHigh Dose Rate (HDR) Brachytherapy of Larynx using Other Isotope

✓ Valid for 2027

Short description: HDR Brachytherapy of Larynx using Oth Isotope

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About D91B9YZ

D91B9YZ is the ICD-10-PCS code for a brachytherapy procedure on the larynx using a high dose rate (HDR) approach with other isotope (qualifier: none).

In plain terms, this corresponds to Radioisotopic teleradiotherapy, the ICD-9-CM procedure title it maps to (92.23).

For a different body part, codes include D9109YZ (ear), D9119YZ (nose), D9139YZ (hypopharynx), D9149YZ (mouth), D9159YZ (tongue), D9169YZ (salivary glands) and 5 more.

The same procedure with a different approach is coded D91BBYZ (low dose rate (LDR)).

With a different device, use D91B97Z (cesium 137 (cs-137)), D91B98Z (iridium 192 (ir-192)), D91B99Z (iodine 125 (I-125)), D91B9BZ (palladium 103 (pd-103)) and D91B9CZ (californium 252 (cf-252)).

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

It has been valid since ICD-10-PCS took effect on October 1, 2015.

What each character means

1. Section
DRadiation Therapy
2. Body System
9Ear, Nose, Mouth and Throat
3. Modality
1Brachytherapy
4. Treatment Site
BLarynx
5. Modality Qualifier
9High Dose Rate (HDR)
6. Isotope
YOther Isotope
7. Qualifier
ZNone

Other versions of this procedure

Different modality qualifier

ICD-9-CM equivalent

Converter →
  • 92.23Radioisotopic teleradiotherapyapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about D91B9YZ

Is D91B9YZ a valid ICD-10-PCS code for 2027?

Yes. D91B9YZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for D91B9YZ?

The CMS GEMs map D91B9YZ to ICD-9-CM 92.23 (Radioisotopic teleradiotherapy).