T40.696S

✓ Billable

Underdosing of other narcotics, sequela

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

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⚠️ Excludes2

inherited

Rules inherited from parent codes.

T40

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

Clinical Description

ICD-10-CM code T40.696S represents underdosing of other narcotics, sequela. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 8-character code at the 7th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code T40.696S?

ICD-10-CM code T40.696S is "Underdosing of other narcotics, sequela". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is T40.696S a billable ICD-10 code?

Yes, T40.696S is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Can T40.696S be coded with other codes?

T40.696S has 1 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in T40.696

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

T40.696AUnderdosing of other narcotics, initial encounter T40.696DUnderdosing of other narcotics, subsequent encounter

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Code Information

CodeT40.696S

BillableYes

ParentT40.696

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

Excludes10 rule(s)

Excludes21 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)