W42.9XXABillable
Exposure to other noise, initial encounter
- Chapter
- 20. External causes of morbidity
- Category
- W42
- Effective date
- October 1, 2026
Related codes in category W42
W42Exposure to noiseW42.0Exposure to supersonic wavesW42.0XXAExposure to supersonic waves, initial encounterYesW42.0XXDExposure to supersonic waves, subsequent encounterYesW42.0XXSExposure to supersonic waves, sequelaYesW42.9Exposure to other noiseW42.9XXDExposure to other noise, subsequent encounterYesW42.9XXSExposure to other noise, sequelaYes
Frequently asked questions
What is ICD-10 code W42.9XXA?
W42.9XXA is an ICD-10-CM diagnosis code for Exposure to other noise, initial encounter.
Is W42.9XXA a billable code?
Yes. W42.9XXA is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is W42.9XXA in?
W42.9XXA falls under Chapter 20: External causes of morbidity.
When did W42.9XXA become effective?
W42.9XXA has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W42.9XXA?
W42.9XXA belongs to category W42, which includes 8 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.