2027 ICD-10-CM Diagnosis Code T63Toxic effect of contact with venomous animals and plants

ICD-10-CM Codes›S00–T88›T51-T65›T63

ICD-10-CM T63
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

T63 is a non-billable ICD-10-CM category code for toxic effect of contact with venomous animals and plants, so it cannot be submitted on claims. Use a more specific code from this category instead, such as T63.001A, T63.001D, T63.001S, and T63.002A.

Code Identity

ICD-10-CM Code
T63
Billable Status
No — Non-Billable Category
Code Describes
Toxic effect of contact with venomous animals and plants
Short Description
Toxic effect of contact with venomous animals and plants
Same as the full description in the CMS dataset.
Chapter
T51-T65
Toxic effects of substances chiefly nonmedicinal as to source

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT51-T65Toxic effects of substances chiefly nonmedicinal as to source
CategoryT63Toxic effect of contact with venomous animals and plants
This CodeT63Toxic effect of contact with venomous animals and plants

Specific Coding for Toxic effect of contact with venomous animals and plantsOverview

Non-specific codes like T63 require more characters. Use one of these billable codes instead:

  • T63.0 for Toxic effect of snake venom

  • T63.00 for Toxic effect of unspecified snake venom

  • T63.01 for Toxic effect of rattlesnake venom

  • T63.02 for Toxic effect of coral snake venom

  • T63.03 for Toxic effect of taipan venom

  • T63.04 for Toxic effect of cobra venom

  • T63.06 for Toxic effect of venom of other North and South American snake

  • T63.07 for Toxic effect of venom of other Australian snake

  • T63.08 for Toxic effect of venom of other African and Asian snake

  • T63.09 for Toxic effect of venom of other snake

  • T63.1 for Toxic effect of venom of other reptiles

  • T63.11 for Toxic effect of venom of gila monster

  • T63.12 for Toxic effect of venom of other venomous lizard

  • T63.19 for Toxic effect of venom of other reptiles

  • T63.2 for Toxic effect of venom of scorpion

  • T63.2X for Toxic effect of venom of scorpion

  • T63.3 for Toxic effect of venom of spider

  • T63.30 for Toxic effect of unspecified spider venom

  • T63.31 for Toxic effect of venom of black widow spider

  • T63.32 for Toxic effect of venom of tarantula

  • T63.33 for Toxic effect of venom of brown recluse spider

  • T63.39 for Toxic effect of venom of other spider

  • T63.4 for Toxic effect of venom of other arthropods

  • T63.41 for Toxic effect of venom of centipedes and venomous millipedes

  • T63.42 for Toxic effect of venom of ants

  • T63.43 for Toxic effect of venom of caterpillars

  • T63.44 for Toxic effect of venom of bees

  • T63.45 for Toxic effect of venom of hornets

  • T63.46 for Toxic effect of venom of wasps

  • T63.48 for Toxic effect of venom of other arthropod

  • T63.5 for Toxic effect of contact with venomous fish

  • T63.51 for Toxic effect of contact with stingray

  • T63.59 for Toxic effect of contact with other venomous fish

  • T63.6 for Toxic effect of contact with other venomous marine animals

  • T63.61 for Toxic effect of contact with Portuguese Man-o-war

  • T63.62 for Toxic effect of contact with other jellyfish

  • T63.63 for Toxic effect of contact with sea anemone

  • T63.69 for Toxic effect of contact with other venomous marine animals

  • T63.7 for Toxic effect of contact with venomous plant

  • T63.71 for Toxic effect of contact with venomous marine plant

  • T63.79 for Toxic effect of contact with other venomous plant

  • T63.8 for Toxic effect of contact with other venomous animals

  • T63.81 for Toxic effect of contact with venomous frog

  • T63.82 for Toxic effect of contact with venomous toad

  • T63.83 for Toxic effect of contact with other venomous amphibian

  • T63.89 for Toxic effect of contact with other venomous animals

  • T63.9 for Toxic effect of contact with unspecified venomous animal

  • T63.91 for Toxic effect of contact with unspecified venomous animal, accidental (unintentional)

  • T63.92 for Toxic effect of contact with unspecified venomous animal, intentional self-harm

  • T63.93 for Toxic effect of contact with unspecified venomous animal, assault

  • T63.94 for Toxic effect of contact with unspecified venomous animal, undetermined

Coding GuidelinesGuidance

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 applicable episode of care:

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

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to T63: its own notes plus those printed at block T51-T65 and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

  • bite or touch of venomous animal
  • pricked or stuck by thorn or leaf

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block T51-T65 Toxic effects of substances chiefly nonmedicinal as to source applies to 1,680 codes
  • contact with and (suspected) exposure to toxic substances (Z77.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On T63 itself
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Block T51-T65 Toxic effects of substances chiefly nonmedicinal as to source applies to 1,680 codes
  • code(s):
  • for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
  • personal history of foreign body fully removed (Z87.821)
  • to identify any retained foreign body, if applicable (Z18.-)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Notes

General instructions on how these codes are used.

From Block T51-T65 Toxic effects of substances chiefly nonmedicinal as to source applies to 1,680 codes
  • When no intent is indicated code to accidental. Undetermined intent is only for use when there is specific documentation in the record that the intent of the toxic effect cannot be determined.
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to each code from category T63
Values for category T63 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name T63, its category, or a range that includes it.

Excludes1 3

These codes carry an Excludes1 note naming T63: they are not reported together with it, unless the two conditions are unrelated.

  • Block W50-W64 Exposure to animate mechanical forces
    Toxic effect of contact with venomous animals and plants (T63.-)
  • W56 Contact with nonvenomous marine animal
    contact with venomous marine animal (T63.-)
  • W64 Exposure to other animate mechanical forces
    contact with venomous animal (T63.-)

Excludes2 1

These codes carry an Excludes2 note naming T63: its condition is not part of those codes, and both may be reported when the patient has both.

  • S71 Open wound of hip and thigh
    bite of venomous animal (T63.-)

Patient EducationClinical

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.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About T63Overview

What is the ICD-10 code for toxic effect of contact with venomous animals and plants?

T63 is the ICD-10-CM category for toxic effect of contact with venomous animals and plants, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is T63 (Toxic effect of contact with venomous animals and plants) a billable code?

No. This is a category header that groups the codes for toxic effect of contact with venomous animals and plants, and headers cannot be submitted on claims. Claims for toxic effect of contact with venomous animals and plants need a more specific code from this category, such as T63.001A, T63.001D, and T63.001S.

Can T63 be reported with a code from Z77?

Not as a rule. The Excludes1 note at block T51-T65, which applies to T63, lists "contact with and (suspected) exposure to toxic substances (Z77.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).