2021 ICD-10-CM Diagnosis Code W57

Bitten or stung by nonvenomous insect and other nonvenomous arthropods

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • W57 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Bit/stung by nonvenom insect and oth nonvenomous arthropods
  • The 2021 edition of ICD-10-CM W57 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of W57 - other international versions of ICD-10 W57 may differ.
ICD-10-CM Coding Rules
  • W57 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 W57. 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.
  • contact with venomous insects and arthropods (
    ICD-10-CM Diagnosis Code T63.2

    Toxic effect of venom of scorpion

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    T63.2-
    ,
    ICD-10-CM Diagnosis Code T63.3

    Toxic effect of venom of spider

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    T63.3-
    ,
    ICD-10-CM Diagnosis Code T63.4

    Toxic effect of venom of other arthropods

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    T63.4-
    )
The following code(s) above W57 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 W57:
  • 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
  • W50-W64
    2021 ICD-10-CM Range W50-W64

    Exposure to animate mechanical forces

    Type 1 Excludes
    • Toxic effect of contact with venomous animals and plants (T63.-)
    Exposure to animate 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

External Cause Index entries containing back-references to W57:
  • Bite, bitten by
    • arthropod W57 (nonvenomous)
    • insect W57 (nonvenomous)
    • millipede W57
    • spider W57 (nonvenomous)
  • Contact (accidental)
    • with
      • arthropods W57 (nonvenomous)
      • insect W57 (nonvenomous)
      • millipede W57
  • Sting
    • arthropod, nonvenomous W57
    • insect, nonvenomous W57

ICD-10-CM Codes Adjacent To W57
W56.81XD …… subsequent encounter
W56.81XS …… sequela
W56.82 Struck by other nonvenomous marine animals
W56.82XA …… initial encounter
W56.82XD …… subsequent encounter
W56.82XS …… sequela
W56.89 Other contact with other nonvenomous marine animals
W56.89XA …… initial encounter
W56.89XD …… subsequent encounter
W56.89XS …… sequela
W57 Bitten or stung by nonvenomous insect and other nonvenomous arthropods
W57.XXXA Bitten or stung by nonvenomous insect and other nonvenomous arthropods, initial encounter
W57.XXXD Bitten or stung by nonvenomous insect and other nonvenomous arthropods, subsequent encounter
W57.XXXS Bitten or stung by nonvenomous insect and other nonvenomous arthropods, sequela
W58 Contact with crocodile or alligator
W58.0 Contact with alligator
W58.01 Bitten by alligator
W58.01XA …… initial encounter
W58.01XD …… subsequent encounter
W58.01XS …… sequela
W58.02 Struck by alligator

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