2024 ICD-10-CM Diagnosis Code T63.00

Toxic effect of unspecified snake venom

ICD-10-CM Code:
T63.00
ICD-10 Code for:
Toxic effect of unspecified snake venom
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Toxic effects of substances chiefly nonmedicinal as to source
      (T51-T65)
      • Toxic effect of contact with venomous animals and plants
        (T63)

T63.00 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of toxic effect of unspecified snake venom. 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.

Unspecified diagnosis codes like T63.00 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Toxic effect of unspecified snake venom

Non-specific codes like T63.00 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 toxic effect of unspecified snake venom:

  • T63.001 for Toxic effect of unspecified snake venom, accidental (unintentional) - NON-BILLABLE CODE

  • Use T63.001A for initial encounter - BILLABLE CODE

  • Use T63.001D for subsequent encounter - BILLABLE CODE

  • Use T63.001S for sequela - BILLABLE CODE

  • T63.002 for Toxic effect of unspecified snake venom, intentional self-harm - NON-BILLABLE CODE

  • Use T63.002A for initial encounter - BILLABLE CODE

  • Use T63.002D for subsequent encounter - BILLABLE CODE

  • Use T63.002S for sequela - BILLABLE CODE

  • T63.003 for Toxic effect of unspecified snake venom, assault - NON-BILLABLE CODE

  • Use T63.003A for initial encounter - BILLABLE CODE

  • Use T63.003D for subsequent encounter - BILLABLE CODE

  • Use T63.003S for sequela - BILLABLE CODE

  • T63.004 for Toxic effect of unspecified snake venom, undetermined - NON-BILLABLE CODE

  • Use T63.004A for initial encounter - BILLABLE CODE

  • Use T63.004D for subsequent encounter - BILLABLE CODE

  • Use T63.004S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Toxic effect of contact with venomous animals and plants (T63). Use the following options for the aplicable episode of care:

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

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.