2026
ICD-10-CM
Diagnosis
Code

T40.4 Poisoning by, adverse effect of and underdosing of other synthetic narcotics

Non-billable
2016–2026

T40.4 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Poisoning by, adverse effect of and underdosing of other synthetic narcotics.

Codes

T40.41
Poisoning by, adverse effect of and underdosing of fentanyl or fentanyl analogs
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T40.42
Poisoning by, adverse effect of and underdosing of tramadol
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T40.49
Poisoning by, adverse effect of and underdosing of other synthetic narcotics
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Versions

2026
No changes
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code