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ICD-10/T40.712A

T40.712A ICD-10-CM Code: Poisoning by cannabis, intentional self-harm, initial encounter

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 917 — POISONING AND TOXIC EFFECTS OF DRUGS WITH MCC (MDC 21)
  • MS-DRG 918 — POISONING AND TOXIC EFFECTS OF DRUGS WITHOUT MCC (MDC 21)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Risk Adjustment (CMS-HCC)

Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.

  • HCC 155 — Major Depression, Moderate or Severe, without Psychosis

Other models: CMS-HCC V22 HCC 58 · RxHCC V08 HCC 132

Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.

Official Registry Overview & Definition

Poisoning by cannabis, intentional self-harm, initial encounter is a billable ICD-10-CM diagnosis code (T40.712A).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T40.712A in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • adverse effect of correct substance properly administered
  • poisoning by overdose of substance
  • poisoning by wrong substance given or taken in error
  • underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Code First

Underlying conditions that must be sequenced before this code.

  • Code first, for adverse effects, the nature of the adverse effect, such as:
  • adverse effect NOS (T88.7)
  • aspirin gastritis (K29.-)
  • blood disorders (D56-D76)
  • contact dermatitis (L23-L25)
  • dermatitis due to substances taken internally (L27.-)
  • nephropathy (N14.0-N14.2)

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code(s) to specify:
  • manifestations of poisoning
  • underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
  • underdosing of medication regimen (Z91.12-, Z91.13-)

Change history

  • FY2022 — 2021-10-01
    Added to the code set
    Poisoning by cannabis, intentional self-harm, initial encounter
    FY2022 changes

Verify Before Coding

  • Billable — reportable as written.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Contextual Map

Every relationship of T40.712A in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88) [Hierarchy]
  • T36-T50 — Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances [Hierarchy]
  • T40-T41 — Analgesics & Antipyretics [Hierarchy]

Referenced by Excludes2 notes

  • F12.2 — Cannabis dependence [Excludes2](via T40.7.-): “cannabis poisoning (T40.7-)” · check together
  • T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified [Excludes2](via T40.7.-): “psychodysleptics [hallucinogens] (T40.7-T40.9-)” · check together

Clinical classification (CCSR)

  • MBD012 — Suicidal ideation/attempt/intentional self-harm [CCSR]
  • EXT014 — External cause codes: poisoning by drug [CCSR]
  • EXT021 — External cause codes: intent of injury, self-harm [CCSR]
  • INJ022 — Poisoning by drugs, initial encounter [CCSR]
  • MBD019 — Cannabis-related disorders [CCSR]

Risk adjustment (CMS-HCC)

  • HCC 155 — Major Depression, Moderate or Severe, without Psychosis [CMS-HCC]

Potential MS-DRG

  • DRG 917 — POISONING AND TOXIC EFFECTS OF DRUGS WITH MCC [MS-DRG]: “POISONING AND TOXIC EFFECTS OF DRUGS WITH MCC (MDC 21)”
  • DRG 918 — POISONING AND TOXIC EFFECTS OF DRUGS WITHOUT MCC [MS-DRG]: “POISONING AND TOXIC EFFECTS OF DRUGS WITHOUT MCC (MDC 21)”

MDC crossing · procedures (32029)

  • MDC 21 — Injuries, Poisonings and Toxic Effects of Drugs [MDC crossing]: “Injuries, Poisonings and Toxic Effects of Drugs — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • 0016070 — Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • 0016071 — Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • 0016072 — Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • 0016073 — Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • 0016074 — Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Open Approach — grouped in MDC 21, the procedure side of this code's crossing.” · check together
  • and 32024 more

Drugs & chemicals (14)

  • Afghanistan black — Afghanistan black — Poisoning, Intentional self-harm [Drug table]: “Afghanistan black (Poisoning, Intentional self-harm)”
  • Bhang+C394 — Bhang+C394 — Poisoning, Intentional self-harm [Drug table]: “Bhang+C394 (Poisoning, Intentional self-harm)”
  • Cannabinol — Cannabinol — Poisoning, Intentional self-harm [Drug table]: “Cannabinol (Poisoning, Intentional self-harm)”
  • Cannabis (derivatives) — Cannabis (derivatives) — Poisoning, Intentional self-harm [Drug table]: “Cannabis (derivatives) (Poisoning, Intentional self-harm)”
  • Dronabinol — Dronabinol — Poisoning, Intentional self-harm [Drug table]: “Dronabinol (Poisoning, Intentional self-harm)”
  • Ganja — Ganja — Poisoning, Intentional self-harm [Drug table]: “Ganja (Poisoning, Intentional self-harm)”
  • Hashish — Hashish — Poisoning, Intentional self-harm [Drug table]: “Hashish (Poisoning, Intentional self-harm)”
  • Lebanese red — Lebanese red — Poisoning, Intentional self-harm [Drug table]: “Lebanese red (Poisoning, Intentional self-harm)”
  • and 6 more

Nearest codes (40)

  • T40 — Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens] [Sibling]
  • T40.693S — Poisoning by other narcotics, assault, sequela [Sibling]
  • T40.694 — Poisoning by other narcotics, undetermined [Sibling]
  • T40.694A — Poisoning by other narcotics, undetermined, initial encounter [Sibling]
  • T40.694D — Poisoning by other narcotics, undetermined, subsequent encounter [Sibling]
  • T40.694S — Poisoning by other narcotics, undetermined, sequela [Sibling]
  • T40.695 — Adverse effect of other narcotics [Sibling]
  • T40.695A — Adverse effect of other narcotics, initial encounter [Sibling]
  • and 32 more

Change history

  • FY2022 — Added to the code set [Change history]

Referenced by Other Codes

Clinical classification (AHRQ CCSR):MBD012 — Suicidal ideation/attempt/intentional self-harm (default); EXT014 — External cause codes: poisoning by drug; EXT021 — External cause codes: intent of injury, self-harm; INJ022 — Poisoning by drugs, initial encounter; MBD019 — Cannabis-related disorders.

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 2 MS-DRGs: DRG 917 (MDC 21), DRG 918 (MDC 21).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Official ICD-10-CM tabular notes on other codes that name T40.712A or its code family.

2 Excludes2 notes across 2 chapters: F12.2 (via T40.7.-), T43 (via T40.7.-).

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T40.712A require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T40.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T40.712A in its code family, with their registry titles.

  • T40.711 — Poisoning by cannabis, accidental (unintentional)
  • T40.711A — Poisoning by cannabis, accidental (unintentional), initial encounter
  • T40.711D — Poisoning by cannabis, accidental (unintentional), subsequent encounter
  • T40.711S — Poisoning by cannabis, accidental (unintentional), sequela
  • T40.712 — Poisoning by cannabis, intentional self-harm
  • T40.712D — Poisoning by cannabis, intentional self-harm, subsequent encounter
  • T40.712S — Poisoning by cannabis, intentional self-harm, sequela
  • T40.713 — Poisoning by cannabis, assault
  • T40.713A — Poisoning by cannabis, assault, initial encounter
  • T40.713D — Poisoning by cannabis, assault, subsequent encounter

View all codes in the T40 family

Associated Substances (14)

Substances from the official ICD-10-CM Table of Drugs and Chemicals that map to this code.

  • Afghanistan black
  • Bhang+C394
  • Cannabinol
  • Cannabis (derivatives)
  • Dronabinol
  • Ganja
  • Hashish
  • Lebanese red
  • Marihuana
  • Marijuana
  • Nabilone
  • Pot
  • Tetrahydrocannabinol
  • THC