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  6. 2024 ICD-10-CM Code T63.3
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code T63.3

Toxic effect of venom of spider

ICD-10-CM Code:
T63.3
ICD-10 Code for:
Toxic effect of venom of spider
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)

T63.3 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 venom of spider. 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 Toxic effect of venom of spider

Non-specific codes like T63.3 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 venom of spider:

  • T63.30 for Toxic effect of unspecified spider venom - NON-BILLABLE CODE

  • T63.301 for Toxic effect of unspecified spider venom, accidental (unintentional) - NON-BILLABLE CODE

  • Use T63.301A for initial encounter - BILLABLE CODE

  • Use T63.301D for subsequent encounter - BILLABLE CODE

  • Use T63.301S for sequela - BILLABLE CODE

  • T63.302 for Toxic effect of unspecified spider venom, intentional self-harm - NON-BILLABLE CODE

  • Use T63.302A for initial encounter - BILLABLE CODE

  • Use T63.302D for subsequent encounter - BILLABLE CODE

  • Use T63.302S for sequela - BILLABLE CODE

  • T63.303 for Toxic effect of unspecified spider venom, assault - NON-BILLABLE CODE

  • Use T63.303A for initial encounter - BILLABLE CODE

  • Use T63.303D for subsequent encounter - BILLABLE CODE

  • Use T63.303S for sequela - BILLABLE CODE

  • T63.304 for Toxic effect of unspecified spider venom, undetermined - NON-BILLABLE CODE

  • Use T63.304A for initial encounter - BILLABLE CODE

  • Use T63.304D for subsequent encounter - BILLABLE CODE

  • Use T63.304S for sequela - BILLABLE CODE

  • T63.31 for Toxic effect of venom of black widow spider - NON-BILLABLE CODE

  • T63.311 for Toxic effect of venom of black widow spider, accidental (unintentional) - NON-BILLABLE CODE

  • Use T63.311A for initial encounter - BILLABLE CODE

  • Use T63.311D for subsequent encounter - BILLABLE CODE

  • Use T63.311S for sequela - BILLABLE CODE

  • T63.312 for Toxic effect of venom of black widow spider, intentional self-harm - NON-BILLABLE CODE

  • Use T63.312A for initial encounter - BILLABLE CODE

  • Use T63.312D for subsequent encounter - BILLABLE CODE

  • Use T63.312S for sequela - BILLABLE CODE

  • T63.313 for Toxic effect of venom of black widow spider, assault - NON-BILLABLE CODE

  • Use T63.313A for initial encounter - BILLABLE CODE

  • Use T63.313D for subsequent encounter - BILLABLE CODE

  • Use T63.313S for sequela - BILLABLE CODE

  • T63.314 for Toxic effect of venom of black widow spider, undetermined - NON-BILLABLE CODE

  • Use T63.314A for initial encounter - BILLABLE CODE

  • Use T63.314D for subsequent encounter - BILLABLE CODE

  • Use T63.314S for sequela - BILLABLE CODE

  • T63.32 for Toxic effect of venom of tarantula - NON-BILLABLE CODE

  • T63.321 for Toxic effect of venom of tarantula, accidental (unintentional) - NON-BILLABLE CODE

  • Use T63.321A for initial encounter - BILLABLE CODE

  • Use T63.321D for subsequent encounter - BILLABLE CODE

  • Use T63.321S for sequela - BILLABLE CODE

  • T63.322 for Toxic effect of venom of tarantula, intentional self-harm - NON-BILLABLE CODE

  • Use T63.322A for initial encounter - BILLABLE CODE

  • Use T63.322D for subsequent encounter - BILLABLE CODE

  • Use T63.322S for sequela - BILLABLE CODE

  • T63.323 for Toxic effect of venom of tarantula, assault - NON-BILLABLE CODE

  • Use T63.323A for initial encounter - BILLABLE CODE

  • Use T63.323D for subsequent encounter - BILLABLE CODE

  • Use T63.323S for sequela - BILLABLE CODE

  • T63.324 for Toxic effect of venom of tarantula, undetermined - NON-BILLABLE CODE

  • Use T63.324A for initial encounter - BILLABLE CODE

  • Use T63.324D for subsequent encounter - BILLABLE CODE

  • Use T63.324S for sequela - BILLABLE CODE

  • T63.33 for Toxic effect of venom of brown recluse spider - NON-BILLABLE CODE

  • T63.331 for Toxic effect of venom of brown recluse spider, accidental (unintentional) - NON-BILLABLE CODE

  • Use T63.331A for initial encounter - BILLABLE CODE

  • Use T63.331D for subsequent encounter - BILLABLE CODE

  • Use T63.331S for sequela - BILLABLE CODE

  • T63.332 for Toxic effect of venom of brown recluse spider, intentional self-harm - NON-BILLABLE CODE

  • Use T63.332A for initial encounter - BILLABLE CODE

  • Use T63.332D for subsequent encounter - BILLABLE CODE

  • Use T63.332S for sequela - BILLABLE CODE

  • T63.333 for Toxic effect of venom of brown recluse spider, assault - NON-BILLABLE CODE

  • Use T63.333A for initial encounter - BILLABLE CODE

  • Use T63.333D for subsequent encounter - BILLABLE CODE

  • Use T63.333S for sequela - BILLABLE CODE

  • T63.334 for Toxic effect of venom of brown recluse spider, undetermined - NON-BILLABLE CODE

  • Use T63.334A for initial encounter - BILLABLE CODE

  • Use T63.334D for subsequent encounter - BILLABLE CODE

  • Use T63.334S for sequela - BILLABLE CODE

  • T63.39 for Toxic effect of venom of other spider - NON-BILLABLE CODE

  • T63.391 for Toxic effect of venom of other spider, accidental (unintentional) - NON-BILLABLE CODE

  • Use T63.391A for initial encounter - BILLABLE CODE

  • Use T63.391D for subsequent encounter - BILLABLE CODE

  • Use T63.391S for sequela - BILLABLE CODE

  • T63.392 for Toxic effect of venom of other spider, intentional self-harm - NON-BILLABLE CODE

  • Use T63.392A for initial encounter - BILLABLE CODE

  • Use T63.392D for subsequent encounter - BILLABLE CODE

  • Use T63.392S for sequela - BILLABLE CODE

  • T63.393 for Toxic effect of venom of other spider, assault - NON-BILLABLE CODE

  • Use T63.393A for initial encounter - BILLABLE CODE

  • Use T63.393D for subsequent encounter - BILLABLE CODE

  • Use T63.393S for sequela - BILLABLE CODE

  • T63.394 for Toxic effect of venom of other spider, undetermined - NON-BILLABLE CODE

  • Use T63.394A for initial encounter - BILLABLE CODE

  • Use T63.394D for subsequent encounter - BILLABLE CODE

  • Use T63.394S 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


Spider Bites

Though many people are afraid of spiders, they rarely bite people unless threatened. Most spider bites are harmless. Occasionally, spider bites can cause allergic reactions. And bites by the venomous black widow and brown recluse spiders can be very dangerous to people.

If you are bitten by a spider, you may see a reaction similar to that of a bee sting, including redness, pain and swelling at the site. To treat a spider bite:

  • Wash the area well with soap and water
  • Apply an ice pack or a wet compress to the area
  • Take over-the-counter pain medicine, if needed
  • Consider using antihistamines for severe swelling
  • Seek medical treatment for small children and adults with severe symptoms


[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.