2021 ICD-10-CM Code S20.46

Insect bite (nonvenomous) of back wall of thorax

Version 2021
Non-Billable Code

Not Valid for Submission

S20.46 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of insect bite (nonvenomous) of back wall of thorax. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

ICD-10:S20.46
Short Description:Insect bite (nonvenomous) of back wall of thorax
Long Description:Insect bite (nonvenomous) of back wall of thorax

Code Classification

Specific Coding for Insect bite (nonvenomous) of back wall of thorax

Header codes like S20.46 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for insect bite (nonvenomous) of back wall of thorax:

  • S20.461 - Insect bite (nonvenomous) of right back wall of thorax
  • S20.461A - Insect bite (nonvenomous) of right back wall of thorax, initial encounter
  • S20.461D - Insect bite (nonvenomous) of right back wall of thorax, subsequent encounter
  • S20.461S - Insect bite (nonvenomous) of right back wall of thorax, sequela
  • S20.462 - Insect bite (nonvenomous) of left back wall of thorax
  • S20.462A - Insect bite (nonvenomous) of left back wall of thorax, initial encounter
  • S20.462D - Insect bite (nonvenomous) of left back wall of thorax, subsequent encounter
  • S20.462S - Insect bite (nonvenomous) of left back wall of thorax, sequela
  • S20.469 - Insect bite (nonvenomous) of unspecified back wall of thorax
  • S20.469A - Insect bite (nonvenomous) of unspecified back wall of thorax, initial encounter
  • S20.469D - Insect bite (nonvenomous) of unspecified back wall of thorax, subsequent encounter
  • S20.469S - Insect bite (nonvenomous) of unspecified back wall of thorax, sequela

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code S20.46 are found in the index:

Information for Patients


Insect Bites and Stings

Also called: Bug bites

Most insect bites are harmless, though they sometimes cause discomfort. Bee, wasp, and hornet stings and fire ant bites usually hurt. Mosquito and flea bites usually itch. Insects can also spread diseases. In the United States, some mosquitoes spread West Nile virus. Travelers outside the United States may be at risk for malaria and other infections.

To prevent insect bites and their complications


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)