Is T63 a billable ICD-10-CM code?

No. T63 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does T63 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Toxic effects of substances chiefly nonmedicinal as to source (T51-T65).

T63

T63 — Toxic effect of contact with venomous animals and plants

Non-billable headerICD-10-CM

T63 is a non-billable header ICD-10-CM code for toxic effect of contact with venomous animals and plants. 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

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

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

Includes

Conditions this code covers.

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

Other codes that can never be billed with T63

These codes carry an Excludes1 note pointing at T63. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T63 alone.

W56Contact with nonvenomous marine animal
T63.6Toxic effect of contact with other venomous marine animals
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
W59Contact with other nonvenomous reptiles
W60Contact with nonvenomous plant thorns and spines and sharp leaves

Risk adjustment

T63 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead T63

10 child codes. Green means billable.

Questions about T63

Is T63 a billable ICD-10-CM code?: No. T63 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T63 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Toxic effects of substances chiefly nonmedicinal as to source (T51-T65).