ICD-10-CM 2027 diagnosis code
T41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases
T41 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.Short description: Anesthetics and therapeutic gases
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About T41
T41 is the ICD-10-CM diagnosis code for poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases. It belongs to block T36-T50 (poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: T41.0 (anesthetics), T41.1 (anesthetics), T41.2 (anesthetics), T41.3 (anesthetics), T41.4 (anesthetic) and T41.5 (gases).
Don't report T41 together with the conditions in its Excludes1 note: benzodiazepines (T42.4-), cocaine (T40.5-), complications of anesthesia during pregnancy (O29.-), complications of anesthesia during labor and delivery (O74.-) and 2 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under T41
- T41.0Poisoning by, adverse effect of and underdosing of inhaled anesthetics
- T41.0XPoisoning by, adverse effect of and underdosing of inhaled anesthetics
- T41.0X1Poisoning by inhaled anesthetics, accidental (unintentional)
- T41.0X2Poisoning by inhaled anesthetics, intentional self-harm
- T41.0X3Poisoning by inhaled anesthetics, assault
- T41.0X4Poisoning by inhaled anesthetics, undetermined
- T41.0X5Adverse effect of inhaled anesthetics
- T41.0X6Underdosing of inhaled anesthetics
- T41.0XPoisoning by, adverse effect of and underdosing of inhaled anesthetics
- T41.1Poisoning by, adverse effect of and underdosing of intravenous anesthetics
- T41.1XPoisoning by, adverse effect of and underdosing of intravenous anesthetics
- T41.1X1Poisoning by intravenous anesthetics, accidental (unintentional)
- T41.1X2Poisoning by intravenous anesthetics, intentional self-harm
- T41.1X3Poisoning by intravenous anesthetics, assault
- T41.1X4Poisoning by intravenous anesthetics, undetermined
- T41.1X5Adverse effect of intravenous anesthetics
- T41.1X6Underdosing of intravenous anesthetics
- T41.1XPoisoning by, adverse effect of and underdosing of intravenous anesthetics
- T41.2Poisoning by, adverse effect of and underdosing of other and unspecified general anesthetics
- T41.20Poisoning by, adverse effect of and underdosing of unspecified general anesthetics
- T41.201Poisoning by unspecified general anesthetics, accidental (unintentional)
- T41.202Poisoning by unspecified general anesthetics, intentional self-harm
- T41.203Poisoning by unspecified general anesthetics, assault
- T41.204Poisoning by unspecified general anesthetics, undetermined
- T41.205Adverse effect of unspecified general anesthetics
- T41.206Underdosing of unspecified general anesthetics
- T41.29Poisoning by, adverse effect of and underdosing of other general anesthetics
- T41.291Poisoning by other general anesthetics, accidental (unintentional)
- T41.292Poisoning by other general anesthetics, intentional self-harm
- T41.293Poisoning by other general anesthetics, assault
- T41.294Poisoning by other general anesthetics, undetermined
- T41.295Adverse effect of other general anesthetics
- T41.296Underdosing of other general anesthetics
- T41.20Poisoning by, adverse effect of and underdosing of unspecified general anesthetics
- T41.3Poisoning by, adverse effect of and underdosing of local anesthetics
- T41.3XPoisoning by, adverse effect of and underdosing of local anesthetics
- T41.3X1Poisoning by local anesthetics, accidental (unintentional)
- T41.3X2Poisoning by local anesthetics, intentional self-harm
- T41.3X3Poisoning by local anesthetics, assault
- T41.3X4Poisoning by local anesthetics, undetermined
- T41.3X5Adverse effect of local anesthetics
- T41.3X6Underdosing of local anesthetics
- T41.3XPoisoning by, adverse effect of and underdosing of local anesthetics
- T41.4Poisoning by, adverse effect of and underdosing of unspecified anesthetic
- T41.41Poisoning by unspecified anesthetic, accidental (unintentional)
- T41.42Poisoning by unspecified anesthetic, intentional self-harm
- T41.43Poisoning by unspecified anesthetic, assault
- T41.44Poisoning by unspecified anesthetic, undetermined
- T41.45Adverse effect of unspecified anesthetic
- T41.46Underdosing of unspecified anesthetics
- T41.5Poisoning by, adverse effect of and underdosing of therapeutic gases
- T41.5XPoisoning by, adverse effect of and underdosing of therapeutic gases
- T41.5X1Poisoning by therapeutic gases, accidental (unintentional)
- T41.5X2Poisoning by therapeutic gases, intentional self-harm
- T41.5X3Poisoning by therapeutic gases, assault
- T41.5X4Poisoning by therapeutic gases, undetermined
- T41.5X5Adverse effect of therapeutic gases
- T41.5X6Underdosing of therapeutic gases
- T41.5XPoisoning by, adverse effect of and underdosing of therapeutic gases
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to T41.
Codes whose notes reference T41
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about T41
Is T41 billable?
- No. T41 is a header code. Report one of its more specific subcodes instead.