2026 ICD-10-CM Diagnosis Code T41.293APoisoning by other general anesthetics, assault, initial encounter

ICD-10-CM Codes›S00–T88›T36-T50›T41

ICD-10-CM T41.293A
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T41.293A is a billable ICD-10-CM diagnosis code for poisoning by other general anesthetics, assault, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 917 through 918. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under External cause codes: intent of injury, assault; External cause codes: poisoning by drug; and Poisoning by drugs, initial encounter.

Code Identity

ICD-10-CM Code
T41.293A
Billable Status
Yes — Valid for Submission
Code Describes
Poisoning by other general anesthetics, assault, initial encounter
Short Description
Poisoning by other general anesthetics, assault, init encntr
Parent Code
T41.293
Poisoning by other general anesthetics, assault

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT36-T50Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
CategoryT41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases
This CodeT41.293APoisoning by other general anesthetics, assault, initial encounter

Coding GuidelinesGuidance

When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined). If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.

The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases (T41). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR EXT022
External cause codes: intent of injury, assault
Default principal diagnosis: inpatient No · outpatient No
CCSR EXT014
External cause codes: poisoning by drug
Default principal diagnosis: inpatient No · outpatient No
CCSR INJ022
Poisoning by drugs, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Ketamine

    a cyclohexanone derivative used for induction of anesthesia. its mechanism of action is not well understood, but ketamine can block nmda receptors (receptors, n-methyl-d-aspartate) and may interact with sigma receptors.

  • Propanidid

    an intravenous anesthetic that has been used for rapid induction of anesthesia and for maintenance of anesthesia of short duration. (from martindale, the extra pharmacopoeia, 30th ed, p918)

  • Propofol

    an intravenous anesthetic agent which has the advantage of a very rapid onset after infusion or bolus injection plus a very short recovery period of a couple of minutes. (from smith and reynard, textbook of pharmacology, 1992, 1st ed, p206). propofol has been used as anticonvulsants and antiemetics.

  • Propofol Infusion Syndrome

    rare and often fatal drug complication which affects patients undergoing long-term treatment with high doses of propofol. it is characterized by metabolic acidosis; hyperlipidemia; rhabdomyolysis; cardiovascular circulatory collapse; cardiac failure; and kidney failure.

  • Tiletamine

    proposed anesthetic with possible anticonvulsant and sedative properties.

Table of Drugs and ChemicalsClinical

Substances in the Table of Drugs and Chemicals that reference this code family. Always confirm in the Tabular List before coding.

SubstanceAccidentalSelf-harmAssaultUndeter­minedAdverse
Effect		Under­dosing
CyclopropaneT41.291T41.292T41.293T41.294T41.295T41.296
DisoprofolT41.291T41.292T41.293T41.294T41.295T41.296
KetamineT41.291T41.292T41.293T41.294T41.295T41.296
MinaxoloneT41.291T41.292T41.293T41.294T41.295T41.296
Oxybate sodiumT41.291T41.292T41.293T41.294T41.295T41.296
PropanididT41.291T41.292T41.293T41.294T41.295T41.296
PropofolT41.291T41.292T41.293T41.294T41.295T41.296
TiletamineT41.291T41.292T41.293T41.294T41.295T41.296
Tribromoethanol, rectalT41.291T41.292T41.293T41.294T41.295T41.296

Patient EducationClinical

Anesthesia

Anesthesia is the use of medicines, called anesthetics, to prevent pain during surgery and other medical procedures. Medicine may be given by injection, inhalation, topical lotion, spray, eye drops, or a skin patch.

The full article covers:

  • What is anesthesia?
  • What is anesthesia used for?
  • What are the types of anesthesia?
  • What are the risks of anesthesia?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert T41.293A to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
968.4 Pois-gen anesth NEC/NOS
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
E962.0 Assault-pois w medic agt
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T41.293AOverview

Is T41.293A (Poisoning by other general anesthetics, assault) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report poisoning by other general anesthetics, assault, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character A in T41.293A mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for poisoning by other general anesthetics, assault, such as an emergency visit or first evaluation.

What MS-DRG does T41.293A group to?

When poisoning by other general anesthetics, assault, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 917, 918, with relative weights from 0.8571 to 1.5684 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of T41.293A?

Under the General Equivalence Mappings, poisoning by other general anesthetics, assault, initial encounter converts to ICD-9-CM 968.4 (pois-gen anesth NEC/NOS) and E962.0 (assault-pois w medic agt). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.