ICD-10-CM External Cause Index · FY 2026 48 Entries
Radiation in the External Cause Index ICD-10-CM
The main term Radiation (exposure to) carries 48 external cause index entries pointing to 18 ICD-10-CM codes. Every indented line below refines the event by vehicle, object, place, or intent. External cause codes are reported after the injury code; verify the 7th character on the code page.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
48
Index Entries
18
Codes Referenced
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Default Code
R
Letter
48 of 48 shown
ICD-10-CM
Index Entries Under Radiation 48 entries · 18 codes
Radiation (exposure to)
arc lamps W89.0 Non-billable
atomic power plant (malfunction) NEC W88.1 Non-billable
complication of or abnormal reaction to medical radiotherapy Y84.2
electromagnetic, ionizing W88.0 Non-billable
gamma rays W88.1 Non-billable
in
war operations (from or following nuclear explosion) see War operations
inadvertent exposure of patient (receiving test or therapy) Y63.3
infrared (heaters and lamps) W90.1 Non-billable
excessive heat from W92 Non-billable
ionized, ionizing (particles, artificially accelerated)
radioisotopes W88.1 Non-billable
specified NEC W88.8 Non-billable
x-rays W88.0 Non-billable
isotopes, radioactive see Radiation, radioactive isotopes
laser (s) W90.2 Non-billable
in war operations see War operations
misadventure in medical care Y63.2
light sources (man-made visible and ultraviolet) W89.9 Non-billable
natural X32 Non-billable
specified NEC W89.8 Non-billable
tanning bed W89.1 Non-billable
welding light W89.0 Non-billable
man-made visible light W89.9 Non-billable
specified NEC W89.8 Non-billable
tanning bed W89.1 Non-billable
welding light W89.0 Non-billable
microwave W90.8 Non-billable
misadventure in medical or surgical procedure Y63.2
natural NEC X39.08 Non-billable
radon X39.01 Non-billable
overdose (in medical or surgical procedure) Y63.2
radar W90.0 Non-billable
radioactive isotopes (any) W88.1 Non-billable
atomic power plant malfunction W88.1 Non-billable
misadventure in medical or surgical treatment Y63.2
radiofrequency W90.0 Non-billable
radium NEC W88.1 Non-billable
sun X32 Non-billable
ultraviolet (light) (man-made) W89.9 Non-billable
natural X32 Non-billable
specified NEC W89.8 Non-billable
tanning bed W89.1 Non-billable
welding light W89.0 Non-billable
welding arc, torch, or light W89.0 Non-billable
excessive heat from W92 Non-billable
x-rays (hard) (soft) W88.0 Non-billable
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM External Cause of Injuries Index release files, effective October 1, 2025 through September 30, 2026.
