2021

  1. ICD-10-CM Codes
    2. ›
  2. V00-Y99 External causes of morbidity
    3. ›
  3. W20-W49 Exposure to inanimate mechanical forces
    4. ›
  4. W40- Explosion of other materials
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code W40

2021 ICD-10-CM Diagnosis Code W40

Explosion of other materials

    2016 2017 2018 2019 2020 2021 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 2021 edition of ICD-10-CM W40 became effective on October 1, 2020.
  • 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

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    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

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Y35.1-
    )
  • explosion involving military or war operations (
    ICD-10-CM Diagnosis Code Y36.0

    War operations involving explosion of marine weapons

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Y36.0-
    ,
    ICD-10-CM Diagnosis Code Y36.2

    War operations involving other explosions and fragments

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    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

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    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
    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
  • W20-W49
    2021 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
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.

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