Version 2024

2024 ICD-10-CM Diagnosis Code S81.05

Open bite of knee

ICD-10-CM Code:
S81.05
ICD-10 Code for:
Open bite of knee
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Injuries to the knee and lower leg
      (S80-S89)
      • Open wound of knee and lower leg
        (S81)

S81.05 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of open bite of knee. The code is not specific and is NOT valid for the year 2024 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.

Specific Coding Applicable to Open bite of knee

Non-specific codes like S81.05 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for open bite of knee:

  • S81.051 for Open bite, right knee - NON-BILLABLE CODE

  • Use S81.051A for initial encounter - BILLABLE CODE

  • Use S81.051D for subsequent encounter - BILLABLE CODE

  • Use S81.051S for sequela - BILLABLE CODE

  • S81.052 for Open bite, left knee - NON-BILLABLE CODE

  • Use S81.052A for initial encounter - BILLABLE CODE

  • Use S81.052D for subsequent encounter - BILLABLE CODE

  • Use S81.052S for sequela - BILLABLE CODE

  • S81.059 for Open bite, unspecified knee - NON-BILLABLE CODE

  • Use S81.059A for initial encounter - BILLABLE CODE

  • Use S81.059D for subsequent encounter - BILLABLE CODE

  • Use S81.059S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Open wound of knee and lower leg (S81). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Patient Education


Animal 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:

  • Never pet, handle, or feed unknown animals
  • Leave snakes alone
  • Watch your children closely around animals
  • Vaccinate your cats, ferrets, and dogs against rabies
  • Spay or neuter your dog to make it less aggressive
  • Get a tetanus booster if you have not had one recently
  • Wear boots and long pants when you are in areas with venomous snakes

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


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.