W57

W57: Bitten or stung by nonvenomous insect and other nonvenomous arthropods

Non-billable headerICD-10-CM

W57 is a non-billable header ICD-10-CM code for bitten or stung by nonvenomous insect and other nonvenomous arthropods. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to code W57

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

contact with venomous insects and arthropods (T63.2-, T63.3-, T63.4-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

Bite, bitten by›arthropod NEC(nonvenomous)
Bite, bitten by›insect(nonvenomous)
Bite, bitten by›millipede
Bite, bitten by›spider(nonvenomous)
Sting›arthropod, nonvenomous
Sting›insect, nonvenomous
Contact›with›arthropods(nonvenomous)
Contact›with›insect NEC(nonvenomous)
Contact›with›millipede

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead W57

3 child codes. Green means billable.