ICD-10-CM 2027 diagnosis code
T45.0X6Underdosing of antiallergic and antiemetic drugs
T45.0X6 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 T45.0X6
T45.0X6 is the ICD-10-CM diagnosis code for underdosing of antiallergic and antiemetic drugs. It belongs to category T45 (poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified), 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 T45.0X (poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugs), T45.0X6 is specifically for underdosing of antiallergic and antiemetic drugs. Related codes cover poisoning by antiallergic and antiemetic drugs, accidental (unintentional) (T45.0X1), poisoning by antiallergic and antiemetic drugs, intentional self-harm (T45.0X2), poisoning by antiallergic and antiemetic drugs, assault (T45.0X3), poisoning by antiallergic and antiemetic drugs, undetermined (T45.0X4) and adverse effect of antiallergic and antiemetic drugs (T45.0X5).
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 T45
Notes that apply from higher levels
Instructions written at a parent level also apply to T45.0X6.
› From T45.0 Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugs
- poisoning by, adverse effect of and underdosing of phenothiazine-based neuroleptics (T43.3)
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
- Acrivastine — Underdosing
- Alizapride — Underdosing
- Antazolin (e) — Underdosing
- Antiallergic NEC — Underdosing
- Antiemetic drug — Underdosing
- Antihistamine — Underdosing
- Antinausea drug — Underdosing
- Antistine — Underdosing
- Antivertigo drug — Underdosing
- Astemizole — Underdosing
- Azatadine — Underdosing
- Azelastine — Underdosing
- Bamipine — Underdosing
- Benadryl — Underdosing
- Benzhydramine (chloride) — Underdosing
- Benzquinamide — Underdosing
- Bisulepin (hydrochloride) — Underdosing
- Bonine — Underdosing
- Bromazine — Underdosing
- Bromodiphenhydramine — Underdosing
- Brompheniramine — Underdosing
- Buclizine — Underdosing
- Carbinoxamine — Underdosing
- Cerium oxalate — Underdosing
- Cerous oxalate — Underdosing
- Cetirizine — Underdosing
- Cetoxime — Underdosing
- Chlorcyclizine — Underdosing
- Chloropyramine — Underdosing
- Chloropyrilene — Underdosing
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 T45.0X6
Is T45.0X6 billable?
- No. T45.0X6 is a header code. Report one of its more specific subcodes instead.