T44.7X4A Poisoning by beta-adrenoreceptor antagonists, undetermined, initial encounter

ICD-10-CM T44.7X4A: Poisoning by beta-adrenoreceptor antagonists, undetermined, initial encounter

ICD-10-CM code T44.7X4A identifies an initial encounter for poisoning by beta-adrenoreceptor antagonists when the intent is undetermined. Official sources map this code to the ICD-10-CM system and distinguish it from related codes for assault, self-harm, or subsequent encounters. Beta-adrenergic antagonist poisoning is noted in clinical literature as a differential diagnosis for calcium channel blocker toxicity due to similar presentations. 1 3 5

Plain-language overview

Code T44.7X4A is an ICD-10-CM diagnosis code with the official label "Poisoning by beta-adrenoreceptor antagonists, undetermined, initial encounter." This code is mapped to the ICD-10-CM system and identifies a diagnosis or health-status concept. 3 4

What this code represents

The code T44.7X4A is listed alongside other beta-adrenoreceptor antagonist codes that specify different intents and encounter types, including T44.7X2A for intentional self-harm and T44.7X3A for assault, both for initial encounters. Additional codes include T44.7X4D for a subsequent encounter and T44.7X4S for sequela. 5

The code T44.7X4A is listed in the same category as T44.7X4, which identifies poisoning by beta-adrenoreceptor antagonists, undetermined. The sources list T44.7X4A as a distinct code from T44.7X4 within the ICD-10-CM hierarchy. 3 5

Coding details

The code T44.7X4A is listed in an official state public health document among violent injury ICD-10 inclusion codes. Other codes in this document include T44.7X2A for intentional self-harm and T44.7X3A for assault, both for initial encounters. 2

Documentation considerations

The official label for T44.7X4A includes the terms "undetermined" and "initial encounter," and the code is listed separately from codes for subsequent encounters and sequelae. The sources do not specify documentation elements beyond what is in the official code label. 3 5

Clinical context

Beta-adrenergic antagonists are listed in clinical literature as part of the differential diagnosis for calcium channel blocker poisoning. The source notes that similar clinical presentations may occur with other pharmacologic toxicities, including beta-adrenergic antagonists. 1

What the sources add

The National Center for Biotechnology Information source discusses calcium channel blocker poisoning and lists beta-adrenergic antagonists in the differential diagnosis, while the Illinois Department of Public Health source lists T44.7X4A among violent injury inclusion codes. These sources provide clinical and public health reporting context for the code. 1 2

The EVS Explore sources confirm the official display label for T44.7X4A and its mapping to the ICD-10-CM system. The Unbound Medicine source lists T44.7X4A within a code tree that includes related codes for adverse effects, underdosing, and different encounter types. 3 4 5

Sources

1. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Violent Injury ICD-10 Inclusion Codes — dph.illinois.gov; accessed 2026-07-25.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-25.
4. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-25.
5. ICD-10-CM 2024 | T44.7X - Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists — unboundmedicine.com; accessed 2026-07-25.