Is T63.833D a billable ICD-10-CM code?

Yes. T63.833D is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does T63.833D 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).

What cannot be coded together with T63.833D?

T63.833D carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above T63.833D (T63.83) and apply to it just the same.

T63.833D

T63.833D — Toxic effect of contact with other venomous amphibian, assault, subsequent encounter

Billable / specific codeICD-10-CMPOA exempt

T63.833D is a billable, specific ICD-10-CM code for toxic effect of contact with other venomous amphibian, assault, subsequent encounter. It is valid for submission on a claim.

7th character "D" — subsequent encounter

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

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above T63.833D

These are not written on T63.833D, but they bind it: a note on a category applies to every code beneath it. Billing T63.833D with anything listed here is a denial.

Written on T63.83 — Toxic effect of contact with other venomous amphibian

contact with nonvenomous amphibian (W62.9)

Excludes2 inherited from the categories above T63.833D

Also inherited, and the opposite of Excludes1: these conditions are not part of T63.833D, but a patient can have both, so you may code both.

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 T63.833D

These codes carry an Excludes1 note pointing at T63.833D. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T63.833D alone.

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
W56Contact with nonvenomous marine animal

Risk adjustment

T63.833D 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.

Medicare coverage

T63.833D is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56559Billing and Coding: Allergy Skin Testing
A56612Billing and Coding: CT of the Head
A56844Billing and Coding: RAST Type Tests
A57326Billing and Coding: Electrocardiograms

Code history

T63.833D has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share T63.833. If T63.833D is not quite right, the correct code is usually one of these.

Questions about T63.833D

Is T63.833D a billable ICD-10-CM code?: Yes. T63.833D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T63.833D 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).
What cannot be coded together with T63.833D?: T63.833D carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above T63.833D (T63.83) and apply to it just the same.