T45.7X2A Poisoning by anticoagulant antagonists, vitamin K and other coagulants, intentional self-harm, initial encounter

ICD-10-CM T45.7X2A: Poisoning by anticoagulant antagonists, vitamin K and other coagulants, intentional self-harm, initial encounter

ICD-10-CM code T45.7X2A identifies an initial encounter for poisoning by anticoagulant antagonists, vitamin K, and other coagulants due to intentional self-harm. The concept is classified as an injury. Public health and clinical sources detail the code's inclusion in violent injury tracking and the clinical context of superwarfarin poisoning, which occurs in adults through deliberate self-harm. 1 3 4 6

Plain-language overview

The ICD-10-CM code T45.7X2A is assigned a semantic type of injury and specifically denotes poisoning by anticoagulant antagonists, vitamin K, and other coagulants when the cause is intentional self-harm during an initial encounter. 6

What this code represents

The code T45.7X2A appears in official lists of violent injury inclusion codes alongside related codes like T45.7x3A for assault and T45.7x4A for undetermined intent, establishing its specific role for intentional self-harm. 4

North Dakota and Illinois public health documents both list T45.7X2A within their official state resources for reportable suicide attempts and violent injury ICD-10 inclusion codes, whereas the NCI EVS source provides the formal concept definition. 3 4 6

Clinical context

Clinical literature establishes that superwarfarin poisoning, which involves long-acting anticoagulant rodenticides like bromadiolone, occurs in adults through deliberate self-harm and suicide attempts. 1

Management of pharmaceutical and recreational drug poisoning includes specific expert suggestions for asymptomatic patients following suspected exposure, noting that an initial psychiatric assessment is carried out in case of attempted suicide. 2

Documentation considerations

The official code description for T45.7X2A explicitly includes the phrases intentional self-harm and initial encounter, establishing the specific clinical elements directly present in the code's title. 6

What the sources add

While the NCI EVS source provides the formal semantic definition of T45.7X2A as an injury concept, the Illinois Department of Public Health source places it within a broader operational context of violent injury tracking alongside assault and undetermined intent codes. 4 6

The clinical management source details pre-hospital and hospital triage protocols for pharmaceutical poisoning, whereas the public health sources simply list the T45.7X2A code as an inclusion criterion for state-level injury reporting. 2 3 4

Sources

1. Superwarfarin (Long-Acting Anticoagulant Rodenticides) Poisoning: from Pathophysiology to Laboratory-Guided Clinical Management — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Management of pharmaceutical and recreational drug poisoning — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
3. ICD 10 codes for Reportable Suicide Attempt and ... — hhs.nd.gov; accessed 2026-07-25.
4. Violent Injury ICD-10 Inclusion Codes — dph.illinois.gov; accessed 2026-07-25.
5. National Health Statistics Reports — cdc.gov; accessed 2026-07-25.
6. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-25.