ICD-10-CM 2027 diagnosis code
T41.3X5Adverse effect of local anesthetics
T41.3X5 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.
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 T41.3X5
T41.3X5 is the ICD-10-CM diagnosis code for adverse effect of local anesthetics. It belongs to category T41 (poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases), 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 3 subcodes must be used instead.
Within T41.3X (poisoning by, adverse effect of and underdosing of local anesthetics), T41.3X5 is specifically for adverse effect of local anesthetics. Related codes cover poisoning by local anesthetics, accidental (unintentional) (T41.3X1), poisoning by local anesthetics, intentional self-harm (T41.3X2), poisoning by local anesthetics, assault (T41.3X3), poisoning by local anesthetics, undetermined (T41.3X4) and underdosing of local anesthetics (T41.3X6).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
7th character
The appropriate 7th character is to be added to each code from category T41
Notes that apply from higher levels
Instructions written at a parent level also apply to T41.3X5.
Broader instructions also apply from 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.
Table of Drugs & Neoplasms entries
- Amethocaine — Adverse effect
- Amethocaine › regional — Adverse effect
- Amethocaine › spinal — Adverse effect
- Amyleine, regional — Adverse effect
- Amylocaine, regional — Adverse effect
- Amylocaine, regional › infiltration (subcutaneous) — Adverse effect
- Amylocaine, regional › nerve block (peripheral) (plexus) — Adverse effect
- Amylocaine, regional › spinal — Adverse effect
- Amylocaine, regional › topical (surface) — Adverse effect
- Anesthesia › caudal — Adverse effect
- Anesthesia › epidural — Adverse effect
- Anesthesia › local — Adverse effect
- Anesthesia › mucosal — Adverse effect
- Anesthesia › nerve blocking — Adverse effect
- Anesthesia › plexus blocking — Adverse effect
- Anesthesia › rectal › local — Adverse effect
- Anesthesia › regional — Adverse effect
- Anesthesia › surface — Adverse effect
- Anesthetic NEC › with muscle relaxant › local — Adverse effect
- Anesthetic NEC › infiltration NEC — Adverse effect
- Anesthetic NEC › local NEC — Adverse effect
- Anesthetic NEC › rectal › local — Adverse effect
- Anesthetic NEC › regional NEC — Adverse effect
- Anesthetic NEC › spinal NEC — Adverse effect
- Anesthetic NEC › topical — Adverse effect
- Aptocaine — Adverse effect
- Articaine — Adverse effect
- Benoxinate — Adverse effect
- Benzamine — Adverse effect
- Benzocaine — Adverse effect
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 T41.3X5
Is T41.3X5 billable?
- No. T41.3X5 is a header code. Report one of its more specific subcodes instead.