T42.3X2

⚠ Non-billable (Header)

Poisoning by barbiturates, intentional self-harm

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.

Check This Code

❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

T42.3

• poisoning by, adverse effect of and underdosing of thiobarbiturates (T41.1-)

⚠️ Excludes2

inherited

Rules inherited from parent codes.

T42

• drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.--F19.-)

Child Codes (3)

T42.3X2APoisoning by barbiturates, intentional self-harm, initial encounter✓ Billable T42.3X2DPoisoning by barbiturates, intentional self-harm, subsequent encounter✓ Billable T42.3X2SPoisoning by barbiturates, intentional self-harm, sequela✓ Billable

Clinical Description

ICD-10-CM code T42.3X2 represents poisoning by barbiturates, intentional self-harm. 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 T42.3X2. Coders should note that T42.3X2 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code T42.3X2?

ICD-10-CM code T42.3X2 is "Poisoning by barbiturates, intentional self-harm". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is T42.3X2 a billable ICD-10 code?

No, T42.3X2 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with T42.3X2?

T42.3X2 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Can T42.3X2 be coded with other codes?

T42.3X2 has 1 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in T42.3X

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

T42.3X1Poisoning by barbiturates, accidental (unintentional)T42.3X3Poisoning by barbiturates, assault T42.3X4Poisoning by barbiturates, undetermined T42.3X5Adverse effect of barbiturates T42.3X6Underdosing of barbiturates

🧪 Validate Combinations

Add T42.3X2 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeT42.3X2

BillableNo — Header code

ParentT42.3X

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

Excludes11 rule(s)

Excludes21 note(s)

Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)