W88.8Header code — not billable
Exposure to other ionizing radiation
- Chapter
- 20. External causes of morbidity
- Category
- W88
- Effective date
- October 1, 2026
Related codes in category W88
W88Exposure to ionizing radiationW88.0Exposure to X-raysW88.0XXAExposure to X-rays, initial encounterYesW88.0XXDExposure to X-rays, subsequent encounterYesW88.0XXSExposure to X-rays, sequelaYesW88.1Exposure to radioactive isotopesW88.1XXAExposure to radioactive isotopes, initial encounterYesW88.1XXDExposure to radioactive isotopes, subsequent encounterYesW88.1XXSExposure to radioactive isotopes, sequelaYesW88.8XXAExposure to other ionizing radiation, initial encounterYesW88.8XXDExposure to other ionizing radiation, subsequent encounterYesW88.8XXSExposure to other ionizing radiation, sequelaYes
Frequently asked questions
What is ICD-10 code W88.8?
W88.8 is an ICD-10-CM diagnosis code for Exposure to other ionizing radiation.
Is W88.8 a billable code?
No. W88.8 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is W88.8 in?
W88.8 falls under Chapter 20: External causes of morbidity.
When did W88.8 become effective?
W88.8 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W88.8?
W88.8 belongs to category W88, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.