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ICD-10-PCS 2027 procedure code

DD1799ZHigh Dose Rate (HDR) Brachytherapy of Rectum using Iodine 125 (I-125)

✓ Valid for 2027

Short description: HDR Brachytherapy of Rectum using Iodine 125

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 DD1799Z

DD1799Z is the ICD-10-PCS code for a brachytherapy procedure on the rectum using a high dose rate (HDR) approach with iodine 125 (I-125) (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 DD1099Z (esophagus), DD1199Z (stomach), DD1299Z (duodenum), DD1399Z (jejunum), DD1499Z (ileum) and DD1599Z (colon).

The same procedure with a different approach is coded DD17B9Z (low dose rate (LDR)).

With a different device, use DD1797Z (cesium 137 (cs-137)), DD1798Z (iridium 192 (ir-192)), DD179BZ (palladium 103 (pd-103)), DD179CZ (californium 252 (cf-252)) and DD179YZ (other isotope).

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
DGastrointestinal System
3. Modality
1Brachytherapy
4. Treatment Site
7Rectum
5. Modality Qualifier
9High Dose Rate (HDR)
6. Isotope
9Iodine 125 (I-125)
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 DD1799Z

Is DD1799Z a valid ICD-10-PCS code for 2027?

Yes. DD1799Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for DD1799Z?

The CMS GEMs map DD1799Z to ICD-9-CM 92.23 (Radioisotopic teleradiotherapy).