ICD-10-CM category
W42 Exposure to noise
W42 is a category, not a billable code. Report one of the 6 complete codes below.
Codes in W42
- W42.0XXAExposure to supersonic waves, initial encounter
- W42.0XXDExposure to supersonic waves, subsequent encounter
- W42.0XXSExposure to supersonic waves, sequela
- W42.9XXAExposure to other noise, initial encounter
- W42.9XXDExposure to other noise, subsequent encounter
- W42.9XXSExposure to other noise, sequela
Outside the US? W42 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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