All ICD10 Codes

T40.99

Non-Billable
ChapterS00–T88
Ranksubcategory
Official Description

Poisoning by, adverse effect of and underdosing of other psychodysleptics [hallucinogens]

Use a more specific code (6 billable)
T40.991Poisoning by other psychodysleptics [hallucinogens], accidental (unintentional)T40.992Poisoning by other psychodysleptics [hallucinogens], intentional self-harmT40.993Poisoning by other psychodysleptics [hallucinogens], assaultT40.994Poisoning by other psychodysleptics [hallucinogens], undeterminedT40.995Adverse effect of other psychodysleptics [hallucinogens]T40.996Underdosing of other psychodysleptics [hallucinogens]
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).
General instructions are available for the parent sections:
View CH19 NotesView T36-T50 NotesView T40 Notes

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
T36-T50Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
T40Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]
T40.9Poisoning by, adverse effect of and underdosing of other and unspecified psychodysleptics [hallucinogens]
T40.99Poisoning by, adverse effect of and underdosing of other psychodysleptics [hallucinogens]Not billable
T40.991Poisoning by other psychodysleptics [hallucinogens], accidental (unintentional)Billable
T40.992Poisoning by other psychodysleptics [hallucinogens], intentional self-harmBillable
T40.993Poisoning by other psychodysleptics [hallucinogens], assaultBillable
T40.994Poisoning by other psychodysleptics [hallucinogens], undeterminedBillable
T40.995Adverse effect of other psychodysleptics [hallucinogens]Billable
T40.996Underdosing of other psychodysleptics [hallucinogens]Billable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T40.99:

categoryT40
Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]
View context instructions
blockT36-T50
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
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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