2021 ICD-10-CM Code S20.171A

Other superficial bite of breast, right breast, initial encounter

Version 2021

Valid for Submission

S20.171A is a billable diagnosis code used to specify a medical diagnosis of other superficial bite of breast, right breast, initial encounter. The code S20.171A is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

S20.171A is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like other superficial bite of breast right breast. According to ICD-10-CM Guidelines an "initial encounter" doesn't necessarily means "initial visit". The 7th character should be used when the patient is undergoing active treatment regardless if new or different providers saw the patient over the course of a treatment. The appropriate 7th character codes should also be used even if the patient delayed seeking treatment for a condition.

ICD-10:S20.171A
Short Description:Other superficial bite of breast, right breast, init encntr
Long Description:Other superficial bite of breast, right breast, initial encounter

Code Classification

Coding Guidelines

The appropriate 7th character is to be added to each code from block Superficial injury of thorax (S20). Use the following options for the aplicable episode of care:

Convert S20.171A to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code S20.171A its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


Animal Bites

Also called: Cat bites, Dog bites

Wild animals usually avoid people. They might attack, however, if they feel threatened, are sick, or are protecting their young or territory. Attacks by pets are more common. Animal bites rarely are life-threatening, but if they become infected, you can develop serious medical problems.

To prevent animal bites and complications from bites

If an animal bites you, clean the wound with soap and water as soon as possible. Get medical attention if necessary.

Centers for Disease Control and Prevention


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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)