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T63.4

T63.4: Toxic effect of venom of other arthropods

Non-billable headerICD-10-CM

T63.4 is a non-billable header ICD-10-CM code for toxic effect of venom of other arthropods. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T63

A
initial encounter
D
subsequent encounter
S
sequela

Use additional code

Add a secondary code to capture the detail described below.

  • code, if applicable, for anaphylactic shock (T78.2)

Excludes2 inherited from the categories above T63.4

Not part of this code, but both may be coded when both are present.

Written on T63: Toxic effect of contact with venomous animals and plants

  • ingestion of toxic animal or plant (T61.-, T62.-)

Other codes that can never be billed with T63.4

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • W57Bitten or stung by nonvenomous insect and other nonvenomous arthropods
  • W57.XXXABitten or stung by nonvenomous insect and other nonvenomous arthropods, initial encounter
  • W57.XXXDBitten or stung by nonvenomous insect and other nonvenomous arthropods, subsequent encounter
  • W57.XXXSBitten or stung by nonvenomous insect and other nonvenomous arthropods, sequela
  • W64Exposure to other animate mechanical forces
  • W64.XXXAExposure to other animate mechanical forces, initial encounter
  • W64.XXXDExposure to other animate mechanical forces, subsequent encounter
  • W64.XXXSExposure to other animate mechanical forces, sequela

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T63.4

7 child codes. Green means billable.

Other codes under T63

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.