ICD-10-CM 2027 diagnosis code
T46.1X2Poisoning by calcium-channel blockers, intentional self-harm
T46.1X2 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 T46.1X2
T46.1X2 is the ICD-10-CM diagnosis code for poisoning by calcium-channel blockers, intentional self-harm. It belongs to category T46 (poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system), 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 T46.1X (poisoning by, adverse effect of and underdosing of calcium-channel blockers), T46.1X2 is specifically for poisoning by calcium-channel blockers, intentional self-harm. Related codes cover poisoning by calcium-channel blockers, accidental (unintentional) (T46.1X1), poisoning by calcium-channel blockers, assault (T46.1X3), poisoning by calcium-channel blockers, undetermined (T46.1X4), adverse effect of calcium-channel blockers (T46.1X5) and underdosing of calcium-channel blockers (T46.1X6).
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 T46
Notes that apply from higher levels
Instructions written at a parent level also apply to T46.1X2.
› From T46 Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system
- poisoning by, adverse effect of and underdosing of metaraminol (T44.4)
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
- Bepridil — Poisoning Intentional self-harm
- Blockers, calcium channel — Poisoning Intentional self-harm
- Diltiazem — Poisoning Intentional self-harm
- Felodipine — Poisoning Intentional self-harm
- Fendiline — Poisoning Intentional self-harm
- Gallopamil — Poisoning Intentional self-harm
- Iproveratril — Poisoning Intentional self-harm
- Isradipine — Poisoning Intentional self-harm
- Lidoflazine — Poisoning Intentional self-harm
- Monoxidine hydrochloride — Poisoning Intentional self-harm
- Nicardipine — Poisoning Intentional self-harm
- Nifedipine — Poisoning Intentional self-harm
- Nimodipine — Poisoning Intentional self-harm
- Nisoldipine — Poisoning Intentional self-harm
- Nitrendipine — Poisoning Intentional self-harm
- Oxodipine — Poisoning Intentional self-harm
- Tiapamil — Poisoning Intentional self-harm
- Verapamil — Poisoning Intentional self-harm
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 T46.1X2
Is T46.1X2 billable?
- No. T46.1X2 is a header code. Report one of its more specific subcodes instead.