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T63.691 vs T63.693

T63.691 (Toxic effect of contact with other venomous marine animals, accidental (unintentional)) compared with T63.693 (Toxic effect of contact with other venomous marine animals, assault), from the official CMS tabular data. T63.691 and T63.693 code the same substance (Coral) with a different intent.

Relationship

Informational

Drug table relationship

T63.691
Toxic effect of contact with other venomous marine animals, accidental (unintentional)
↔
T63.693
Toxic effect of contact with other venomous marine animals, assault

Same substance, different circumstance of exposure.

Same substance — assault (Coral)

Accidental poisoning, intentional self-harm, assault, undetermined intent, adverse effect and underdosing are mutually exclusive columns — exactly one applies to a given encounter.

Source: CMS Table of Drugs and Chemicals

Can these codes be reported together?

Same substance, different intent. T63.691 and T63.693 code the same substance (Coral) with a different circumstance of exposure.

From the CMS Table of Drugs and Chemicals: accidental poisoning, intentional self-harm, assault, undetermined intent, adverse effect and underdosing are mutually exclusive columns — only one of them applies to a given encounter.

Side by side

T63.691Toxic effect of contact with other venomous marine animals, accidental (unintentional)T63.693Toxic effect of contact with other venomous marine animals, assault
Billing statusNon-billable headerNon-billable header
ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionToxic effect of contact with other venomous marine animals, accidental (unintentional) is a non-billable ICD-10-CM category code (T63.691).Toxic effect of contact with other venomous marine animals, assault is a non-billable ICD-10-CM category code (T63.693).
7th characterThe appropriate 7th character is to be added to each code from category T63The appropriate 7th character is to be added to each code from category T63
Includes
bite or touch of venomous animal
pricked or stuck by thorn or leaf
bite or touch of venomous animal
pricked or stuck by thorn or leaf
Use additional code
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)
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)
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources