ICD-10-CM

T40.691D: Poisoning by other narcotics, accidental (unintentional), subsequent encounter

A billable ICD-10-CM diagnosis code.

Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page

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A header groups codes and is not billed. A billable code is one you can report.

It's the public CDC file. Check the current ICD-10-CM guidelines before you code.

Excludes2 means the other condition can be reported with this one when both are documented.

From T40. A note on a category applies to every code under it.