ICD-10-CM Codes
V00-Y99 External causes of morbidity
W85-W99 Exposure to electric current, radiation and extreme ambient air temperature and pressure
W90- Exposure to other nonionizing radiation
2021 ICD-10-CM Diagnosis Code W90

2021 ICD-10-CM Diagnosis Code W90

Exposure to other nonionizing radiation

2016

2017

2018

2019

2020

2021

Non-Billable/Non-Specific Code

W90 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2021 edition of ICD-10-CM W90 became effective on October 1, 2020.
This is the American ICD-10-CM version of W90 - other international versions of ICD-10 W90 may differ.

ICD-10-CM Coding Rules

W90 describes the circumstance causing an injury, not the nature of the injury.

Type 2 Excludes

Type 2 Excludes Help

A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (W90) and the excluded code together.

exposure to sunlight (
ICD-10-CM Diagnosis Code X32
Exposure to sunlight
Type 1 Excludes
- man-made radiation (tanning bed) (W89)
Type 2 Excludes
- radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
X32
)

The following code(s) above W90 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 W90:

V00-Y99
2021 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
W85-W99
2021 ICD-10-CM Range W85-W99
Exposure to electric current, radiation and extreme ambient air temperature and pressure
Type 1 Excludes
- exposure to:
- failure in dosage of radiation or temperature during surgical and medical care (Y63.2-Y63.5)
- lightning (T75.0-)
- natural cold (X31)
- natural heat (X30)
- natural radiation NOS (X39)
- radiological procedure and radiotherapy (Y84.2)
- sunlight (X32)
Exposure to electric current, radiation and extreme ambient air temperature and pressure

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

Code annotations containing back-references to W90:

Use Additional: L57
, L58

ICD-10-CM Diagnosis Code L57
Skin changes due to chronic exposure to nonionizing radiation
Use Additional
- code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90)
ICD-10-CM Diagnosis Code L58
Radiodermatitis
Use Additional
- code to identify the source of the radiation (W88, W90)

ICD-10-CM Codes Adjacent To W90

W89.1XXD …… subsequent encounter

W89.1XXS …… sequela

W89.8 Exposure to other man-made visible and ultraviolet light

W89.8XXA …… initial encounter

W89.8XXD …… subsequent encounter

W89.8XXS …… sequela

W89.9 Exposure to unspecified man-made visible and ultraviolet light

W89.9XXA …… initial encounter

W89.9XXD …… subsequent encounter

W89.9XXS …… sequela

W90 Exposure to other nonionizing radiation

W90.0 Exposure to radiofrequency

W90.0XXA …… initial encounter

W90.0XXD …… subsequent encounter

W90.0XXS …… sequela

W90.1 Exposure to infrared radiation

W90.1XXA …… initial encounter

W90.1XXD …… subsequent encounter

W90.1XXS …… sequela

W90.2 Exposure to laser radiation

W90.2XXA …… initial encounter

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

2021 ICD-10-CM Diagnosis Code W90

Exposure to other nonionizing radiation

Exposure to sunlight

External causes of morbidity

Exposure to electric current, radiation and extreme ambient air temperature and pressure

Skin changes due to chronic exposure to nonionizing radiation

Radiodermatitis