ICD-10-CM Codes
V00-Y99
W20-W49
W42-
2023 ICD-10-CM Diagnosis Code W42

2023 ICD-10-CM Diagnosis Code W42

Exposure to noise

2016

2017

2018

2019

2020

2021

2022

2023

Non-Billable/Non-Specific Code

W42 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2023 edition of ICD-10-CM W42 became effective on October 1, 2022.
This is the American ICD-10-CM version of W42 - other international versions of ICD-10 W42 may differ.

ICD-10-CM Coding Rules

W42 describes the circumstance causing an injury, not the nature of the injury.

The following code(s) above W42 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to W42:

V00-Y99
2023 ICD-10-CM Range V00-Y99
External causes of morbidity
Note
- This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.
External causes of morbidity
W20-W49
2023 ICD-10-CM Range W20-W49
Exposure to inanimate mechanical forces
Type 1 Excludes
- assault (X92-Y09)
- contact or collision with animals or persons (W50-W64)
- exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
- intentional self-harm (X71-X83)
Exposure to inanimate mechanical forces

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

ICD-10-CM Codes Adjacent To W42

W40.1XXD …… subsequent encounter

W40.1XXS …… sequela

W40.8 Explosion of other specified explosive materials

W40.8XXA …… initial encounter

W40.8XXD …… subsequent encounter

W40.8XXS …… sequela

W40.9 Explosion of unspecified explosive materials

W40.9XXA …… initial encounter

W40.9XXD …… subsequent encounter

W40.9XXS …… sequela

W42 Exposure to noise

W42.0 Exposure to supersonic waves

W42.0XXA …… initial encounter

W42.0XXD …… subsequent encounter

W42.0XXS …… sequela

W42.9 Exposure to other noise

W42.9XXA …… initial encounter

W42.9XXD …… subsequent encounter

W42.9XXS …… sequela

W45 Foreign body or object entering through skin

W45.0 Nail entering through skin

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code W42

Exposure to noise

External causes of morbidity

Exposure to inanimate mechanical forces