ICD-10-CM Codes
V00-Y99 External causes of morbidity
W20-W49 Exposure to inanimate mechanical forces
W40- Explosion of other materials

2018/2019 ICD-10-CM Diagnosis Code W40

Explosion of other materials

2016

2017

2018

2019

Non-Billable/Non-Specific Code

W40 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2018/2019 edition of ICD-10-CM W40 became effective on October 1, 2018.
This is the American ICD-10-CM version of W40 - other international versions of ICD-10 W40 may differ.

ICD-10-CM Coding Rules

W40 describes the circumstance causing an injury, not the nature of the injury.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as W40. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

assault by explosive material (
ICD-10-CM Diagnosis Code X96
Assault by explosive material
Type 1 Excludes
- incendiary device (X97)
- terrorism involving explosive material (Y38.2-)
X96
)
explosion involving legal intervention (
ICD-10-CM Diagnosis Code Y35.1
Legal intervention involving explosives
Y35.1-
)
explosion involving military or war operations (
ICD-10-CM Diagnosis Code Y36.0
War operations involving explosion of marine weapons
Y36.0-
,
ICD-10-CM Diagnosis Code Y36.2
War operations involving other explosions and fragments
Type 1 Excludes
- war operations involving explosion of aircraft (Y36.1-)
- war operations involving explosion of marine weapons (Y36.0-)
- war operations involving explosion of nuclear weapons (Y36.5-)
- war operations involving explosion occurring after cessation of hostilities (Y36.8-)
Y36.2-
)
intentional self-harm by explosive material (
ICD-10-CM Diagnosis Code X75
Intentional self-harm by explosive material
X75
)

The following code(s) above W40 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 W40:

V00-Y99
2019 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
2019 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

ICD-10-CM Codes Adjacent To W40

W37.8XXD …… subsequent encounter

W37.8XXS …… sequela

W38 Explosion and rupture of other specified pressurized devices

W38.XXXA Explosion and rupture of other specified pressurized devices, initial encounter

W38.XXXD Explosion and rupture of other specified pressurized devices, subsequent encounter

W38.XXXS Explosion and rupture of other specified pressurized devices, sequela

W39 Discharge of firework

W39.XXXA Discharge of firework, initial encounter

W39.XXXD Discharge of firework, subsequent encounter

W39.XXXS Discharge of firework, sequela

W40 Explosion of other materials

W40.0 Explosion of blasting material

W40.0XXA …… initial encounter

W40.0XXD …… subsequent encounter

W40.0XXS …… sequela

W40.1 Explosion of explosive gases

W40.1XXA …… initial encounter

W40.1XXD …… subsequent encounter

W40.1XXS …… sequela

W40.8 Explosion of other specified explosive materials

W40.8XXA …… initial encounter

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

2018/2019 ICD-10-CM Diagnosis Code W40

Explosion of other materials

Assault by explosive material

Legal intervention involving explosives

War operations involving explosion of marine weapons

War operations involving other explosions and fragments

Intentional self-harm by explosive material

External causes of morbidity

Exposure to inanimate mechanical forces