ICD-10-CM 2027 diagnosis code
Y63.2Overdose of radiation given during therapy
Y63.2 is a valid, billable ICD-10-CM code for overdose of radiation given during therapy. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Y63.2
Y63.2 is the ICD-10-CM diagnosis code for Overdose of radiation given during therapy. It belongs to category Y63 (failure in dosage during surgical and medical care), block Y62-Y69 (misadventures to patients during surgical and medical care) and chapter 20 (external causes of morbidity). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within Y63 (failure in dosage during surgical and medical care), Y63.2 is specifically for Overdose of radiation given during therapy. Related codes cover excessive amount of blood or other fluid given during transfusion or infusion (Y63.0), Incorrect dilution of fluid used during infusion (Y63.1), Inadvertent exposure of patient to radiation during medical care (Y63.3), failure in dosage in electroshock or insulin-shock therapy (Y63.4), inappropriate temperature in local application and packing (Y63.5), underdosing and nonadministration of necessary drug, medicament or biological substance (Y63.6), failure in dosage during other surgical and medical care (Y63.8) and failure in dosage during unspecified surgical and medical care (Y63.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as E873.2 (Overdose of radiation in therapy).
Notes that apply from higher levels
Instructions written at a parent level also apply to Y63.2.
Broader instructions also apply from Y62-Y69 Misadventures to patients during surgical and medical care and Chapter 20: External causes of morbidity.
Alphabetic index entries
9 entriesTerms in the official ICD-10-CM index that lead to Y63.2.
- Burn, burned, burning (accidental) (by) (from) (on) › therapeutic misadventure › overdose of radiation
- Misadventure (s) to patient(s) during surgical or medical care › failure › in dosage › overdose › radiation, in therapy
- Misadventure (s) to patient(s) during surgical or medical care › failure › in dosage › radiation › overdose
- Misadventure (s) to patient(s) during surgical or medical care › overdose › radiation (in therapy)
- Overdose (drug) › radiation
- Radiation (exposure to) › laser (s) › misadventure in medical care
- Radiation (exposure to) › misadventure in medical or surgical procedure
- Radiation (exposure to) › overdose (in medical or surgical procedure)
- Radiation (exposure to) › radioactive isotopes (any) › misadventure in medical or surgical treatment
ICD-9-CM equivalent
Converter →- E873.2Overdose of radiation in therapyexact
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 Y63.2
Is Y63.2 billable?
- Yes. Y63.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Y63.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Y63.2 as a principal diagnosis.
Is Y63.2 a CC or MCC?
- No. Y63.2 is neither a CC nor an MCC under MS-DRG v44.0.