What overdose ICD codes can I use?
If you’re looking for overdose ICD codes, you’ve come to the right place. Please note that the majority of these codes have one of three labels:
- Initial Encounter, which means that the patient is currently receiving active treatment for it,
- Subsequent Encounter, which means that the patient is currently in the recovery phase and is still being given active care,
- and Sequela, which means that the patient is dealing with the after-effects of a problem, which, in the context of this guide, is an overdose. Given this, two other ICD-10 codes should accompany an ICD-10 code with this label, and one should designate the sequela’s nature, while the other should describe the sequela (meaning its effects).
Most of these codes will also be labeled as accidental (meaning they overdosed by accident) or intentional self-harm (meaning they intended to overdose).
For this guide, we will only list the ones labeled with Initial Encounter. What’s important is that you see at least ten overdose ICD codes so you can see the variety of causes for overdose. We will also only list down those that are Accidental. It’s best to assume that there is an Intentional Self-harm variation of it.
Here are some examples of overdose-related ICD-10 codes you can use:
- T36.0X1A - Poisoning by penicillins, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on penicillin.
- T36.1X1A - Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on cephalosporins and/or other beta-lactam antibiotics.
- T36.2X1A - Poisoning by chloramphenicol group, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on a substance from a chloramphenicol group.
- T36.3X1A - Poisoning by macrolides, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on macrolides.
- T36.4X1A - Poisoning by tetracyclines, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on tetracyclines.
- T36.6X1A - Poisoning by rifampicins, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on rifampicins.
- T36.7X1A - Poisoning by antifungal antibiotics, systemically used, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on antifungal antibiotics that they’ve been using systemically.
- T37.0X1A - Poisoning by sulfonamides, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on sulfonamides.
- T37.1X1A - Poisoning by antimycobacterial drugs, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on antimycobacterial drugs.
- T37.2X1A - Poisoning by antimalarials and drugs acting on other blood protozoa, accidental (unintentional), initial encounter
This ICD-10 code is meant to be used on a patient who accidentally/unintentionally overdosed on antimalarials and/or drugs that act on other blood protozoa.

