T46.5X5

⚠ Non-billable (Header)

Adverse effect of other antihypertensive drugs

Injury, poisoning and certain other consequences of external causes (S00-T88)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

T46

• poisoning by, adverse effect of and underdosing of metaraminol (T44.4)

⚠️ Excludes2

inherited

Rules inherited from parent codes.

T46.5

• poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists (T44.7)
• poisoning by, adverse effect of and underdosing of calcium-channel blockers (T46.1)
• poisoning by, adverse effect of and underdosing of diuretics (T50.0-T50.2)

Child Codes (3)

T46.5X5AAdverse effect of other antihypertensive drugs, initial encounter✓ Billable T46.5X5DAdverse effect of other antihypertensive drugs, subsequent encounter✓ Billable T46.5X5SAdverse effect of other antihypertensive drugs, sequela✓ Billable

Clinical Description

ICD-10-CM code T46.5X5 represents adverse effect of other antihypertensive drugs. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 7-character code at the 6th level of specificity. There are 3 more specific child codes under T46.5X5. Coders should note that T46.5X5 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code T46.5X5?

ICD-10-CM code T46.5X5 is "Adverse effect of other antihypertensive drugs". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is T46.5X5 a billable ICD-10 code?

No, T46.5X5 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with T46.5X5?

T46.5X5 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Can T46.5X5 be coded with other codes?

T46.5X5 has 3 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in T46.5X

Other codes in the same category that may be relevant for differential coding:

T46.5X1Poisoning by other antihypertensive drugs, accidental (unintentional)T46.5X2Poisoning by other antihypertensive drugs, intentional self-harm T46.5X3Poisoning by other antihypertensive drugs, assault T46.5X4Poisoning by other antihypertensive drugs, undetermined T46.5X6Underdosing of other antihypertensive drugs

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Code Information

CodeT46.5X5

BillableNo — Header code

ParentT46.5X

CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)

Excludes11 rule(s)

Excludes23 note(s)

Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)