T65.91

Billable
ChapterS00–T88
Ranksubcategory
Official Description

Toxic effect of unspecified substance, accidental (unintentional)

Metadata & Insights
  • Billable/specific code (valid for reimbursement).
  • Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

Instructional Notes

Includes
  • Poisoning NOS
General instructions are available for the parent sections:

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
T51-T65Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)
T65Toxic effect of other and unspecified substances
T65.9Toxic effect of unspecified substance
T65.91Toxic effect of unspecified substance, accidental (unintentional)Billable
T65.91XAToxic effect of unspecified substance, accidental (unintentional), initial encounterBillable
T65.91XDToxic effect of unspecified substance, accidental (unintentional), subsequent encounterBillable
T65.91XSToxic effect of unspecified substance, accidental (unintentional), sequelaBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T65.91:

blockT51-T65
Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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