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T63.94XS ICD-10-CM Code: Toxic effect of contact with unspecified venomous animal, undetermined, sequela

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.

  • MS-DRG 922 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC (MDC 21)
  • MS-DRG 923 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC (MDC 21)

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.

Code Overview

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

Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T63.94XS 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 inherited from T63
  • pricked or stuck by thorn or leaf inherited from T63

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): inherited from T51-T65
  • for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70) inherited from T51-T65
  • personal history of foreign body fully removed (Z87.821) inherited from T51-T65
  • to identify any retained foreign body, if applicable (Z18.-) inherited from T51-T65

Frequently Compared Codes

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

Change history

  • FY2016 — 2015-10-01
    In the code set at ICD-10-CM adoption
    Toxic effect of contact with unspecified venomous animal, undetermined, sequela

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

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 in Claim Check.

Relationships & Classification

Other codes that name T63.94XS or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 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.-), W59 (via T63.-), W60 (via T63.-), W61 (via T63.-), W62 (via T63.-), W64 (via T63.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 1 Excludes2 note: S71 (via T63.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper 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 922 (MDC 21), DRG 923 (MDC 21).

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

Clinical classification (AHRQ CCSR):INJ075 — Poisoning/toxic effect/adverse effects/underdosing, sequela (default).

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

Related Codes

Same injury, other encounter phase

Same injury, coded at a different phase of treatment via the 7th character.

T63.94XA — Toxic effect of contact with unspecified venomous animal, undetermined, initial encounter Compare T63.94XS vs T63.94XA →, T63.94XD — Toxic effect of contact with unspecified venomous animal, undetermined, subsequent encounter

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Poisoning/toxic effect/adverse effects/underdosing, sequela).

+1606 more

Contextual Map

Every relationship of T63.94XS 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)

  • INJ075 — Poisoning/toxic effect/adverse effects/underdosing, sequela [CCSR]

MS-DRG Grouper

  • DRG 922 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC [MS-DRG]: “OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC (MDC 21)”
  • DRG 923 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC [MS-DRG]: “OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC (MDC 21)”

MDC crossing · procedures (32029)

  • MDC 21 — Injuries, Poisonings and Toxic Effects of Drugs [MDC crossing]: “Injuries, Poisonings and Toxic Effects of Drugs — 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.”
  • 0016070 — Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • 0016071 — Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • 0016072 — Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • 0016073 — Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • 0016074 — Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • and 32024 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

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T63.94XS 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 T63.94XS 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