W88
Non-billableExposure to ionizing radiation
W88 is the ICD-10-CM code for Exposure to ionizing radiation. It is a non-billable category code — use a more specific child code such as W88.0 for billing.
- Status
- Header (non-billable)
- Chapter
- V00-Y99
- Subcodes
- 3
- Edition
- FY2026
V00-Y99 External causes of morbidity
What this means — in plain language
MedlinePlus · NIHWhat is radiation? Radiation is energy. It travels in the form of energy waves or high-speed particles. Radiation can occur naturally or be man-made. There are two types: Non-ionizing radiation, which includes radio waves, cell phones, microwaves, infrared radiation and visible light Ionizing radiation, which includes ultraviolet radiation, radon , x-rays , and gamma rays What are the sources of radiation exposure?…
Read more about Radiation Exposure at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
- •exposure to sunlight (X32)
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
- What is ICD-10 code W88?
- W88 is the ICD-10-CM code for "Exposure to ionizing radiation". It falls under V00-Y99 External causes of morbidity.
- Is W88 a billable code?
- No — W88 is a non-billable header code. Use a more specific child code (such as W88.0) for billing.
- What is excluded from W88?
- Excludes1 (not coded here): exposure to sunlight (X32).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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