ICD-10-PCS 2027 procedure code
DFY28ZZHyperthermia of Bile Ducts
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 DFY28ZZ
DFY28ZZ is the ICD-10-PCS code for a other radiation procedure on the bile ducts using a hyperthermia approach with none (qualifier: none).
In plain terms, this corresponds to hyperthermia for treatment of cancer, the ICD-9-CM procedure title it maps to (99.85).
For a different body part, codes include DFY08ZZ (liver), DFY18ZZ (gallbladder) and DFY38ZZ (pancreas).
The same procedure with a different approach is coded DFY27ZZ (contact radiation), DFY2CZZ (intraoperative radiation therapy (IORT)) and DFY2FZZ (plaque radiation).
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
- FHepatobiliary System and Pancreas
- 3. Modality
- YOther Radiation
- 4. Treatment Site
- 2Bile Ducts
- 5. Modality Qualifier
- 8Hyperthermia
- 6. Isotope
- ZNone
- 7. Qualifier
- ZNone
Other versions of this procedure
Different treatment site
Different modality qualifier
ICD-9-CM equivalent
Converter →- 99.85Hyperthermia for treatment of cancerapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about DFY28ZZ
Is DFY28ZZ a valid ICD-10-PCS code for 2027?
- Yes. DFY28ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for DFY28ZZ?
- The CMS GEMs map DFY28ZZ to ICD-9-CM 99.85 (Hyperthermia for treatment of cancer).