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T63.94XD ICD-10-CM Code: Toxic effect of contact with unspecified venomous animal, undetermined, subsequent encounter

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Toxic effect of contact with unspecified venomous animal, undetermined, subsequent encounter is a billable ICD-10-CM diagnosis code (T63.94D).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T63.94XD in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

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

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional 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.-)

Frequently Compared Codes

The official Excludes notes on T63.94XD name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Relationships & Classification

Official ICD-10-CM tabular notes on other codes that name T63.94XD or its code family.

15 Excludes1 notes: W50 (via T63.-), W50-W64 (via T63.-), W51 (via T63.-), W52 (via T63.-), W53 (via T63.-), W54 (via T63.-), W55 (via T63.-), W56 (via T63.-), W57 (via T63.-), W58 (via T63.-) and 5 more.

1 Excludes2 notes: S71 (via T63.-).

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 2 MS-DRGs: DRG 949 (MDC 23), DRG 950 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):INJ060 — Toxic effects, subsequent encounter (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Contextual Map

Every relationship of T63.94XD in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88) [Hierarchy]
  • T51-T65 — Toxic effects of substances chiefly nonmedicinal as to source [Hierarchy]

Referenced by Excludes1 notes (15)

  • W50 — Accidental hit, strike, kick, twist, bite or scratch by another person [Excludes1](via T63.-): “Toxic effect of contact with venomous animals and plants (T63.-)” · check together
  • W50-W64 — Exposure to animate mechanical forces (W50-W64) [Excludes1](via T63.-): “Toxic effect of contact with venomous animals and plants (T63.-)” · check together
  • W51 — Accidental striking against or bumped into by another person [Excludes1](via T63.-): “Toxic effect of contact with venomous animals and plants (T63.-)” · check together
  • W52 — Crushed, pushed or stepped on by crowd or human stampede [Excludes1](via T63.-): “Toxic effect of contact with venomous animals and plants (T63.-)” · check together
  • W53 — Contact with rodent [Excludes1](via T63.-): “Toxic effect of contact with venomous animals and plants (T63.-)” · check together
  • W54 — Contact with dog [Excludes1](via T63.-): “Toxic effect of contact with venomous animals and plants (T63.-)” · check together
  • W55 — Contact with other mammals [Excludes1](via T63.-): “Toxic effect of contact with venomous animals and plants (T63.-)” · check together
  • W56 — Contact with nonvenomous marine animal [Excludes1](via T63.-): “contact with venomous marine animal (T63.-)” · check together
  • and 7 more

Referenced by Excludes2 notes

  • S71 — Open wound of hip and thigh [Excludes2](via T63.-): “bite of venomous animal (T63.-)” · check together

Clinical classification (CCSR)

  • INJ060 — Toxic effects, subsequent encounter [CCSR]

Potential MS-DRG

  • DRG 949 — AFTERCARE WITH CC/MCC [MS-DRG]: “AFTERCARE WITH CC/MCC (MDC 23)”
  • DRG 950 — AFTERCARE WITHOUT CC/MCC [MS-DRG]: “AFTERCARE WITHOUT CC/MCC (MDC 23)”

MDC crossing · procedures (1235)

  • MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services [MDC crossing]: “Factors Influencing Health Status and Other Contacts with Health Services — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • F003GKZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GMZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GPZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GYZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GZZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • and 1230 more

Nearest codes (40)

  • T63 — Toxic effect of contact with venomous animals and plants [Sibling]
  • T63.833A — Toxic effect of contact with other venomous amphibian, assault, initial encounter [Sibling]
  • T63.833D — Toxic effect of contact with other venomous amphibian, assault, subsequent encounter [Sibling]
  • T63.833S — Toxic effect of contact with other venomous amphibian, assault, sequela [Sibling]
  • T63.834 — Toxic effect of contact with other venomous amphibian, undetermined [Sibling]
  • T63.834A — Toxic effect of contact with other venomous amphibian, undetermined, initial encounter [Sibling]
  • T63.834D — Toxic effect of contact with other venomous amphibian, undetermined, subsequent encounter [Sibling]
  • T63.834S — Toxic effect of contact with other venomous amphibian, undetermined, sequela [Sibling]
  • and 32 more

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T63.94XD require a 7th character?

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

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T63.94XD in its code family, with their registry titles.

  • T63.92 — Toxic effect of contact with unspecified venomous animal, intentional self-harm
  • T63.92XA — Toxic effect of contact with unspecified venomous animal, intentional self-harm, initial encounter
  • T63.92XD — Toxic effect of contact with unspecified venomous animal, intentional self-harm, subsequent encounter
  • T63.92XS — Toxic effect of contact with unspecified venomous animal, intentional self-harm, sequela
  • T63.93 — Toxic effect of contact with unspecified venomous animal, assault
  • T63.93XA — Toxic effect of contact with unspecified venomous animal, assault, initial encounter
  • T63.93XD — Toxic effect of contact with unspecified venomous animal, assault, subsequent encounter
  • T63.93XS — Toxic effect of contact with unspecified venomous animal, assault, sequela
  • T63.94 — Toxic effect of contact with unspecified venomous animal, undetermined
  • T63.94XA — Toxic effect of contact with unspecified venomous animal, undetermined, initial encounter

View all codes in the T63 family