T36.4XHeader code — not billable
Poisoning by, adverse effect of and underdosing of tetracyclines
Short description: Tetracyclines
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T36
- Effective date
- October 1, 2026
Related codes in category T36
T36Systemic antibioticsT36.0PenicillinsT36.0XPenicillinsT36.0X1Poisoning by penicillins, accidental (unintentional)T36.0X1APoisoning by penicillins, accidental (unintentional), initYesT36.0X1DPoisoning by penicillins, accidental (unintentional), subsYesT36.0X1SPoisoning by penicillins, accidental, sequelaYesT36.0X2Poisoning by penicillins, intentional self-harmT36.0X2APoisoning by penicillins, intentional self-harm, init encntrYesT36.0X2DPoisoning by penicillins, intentional self-harm, subs encntrYesT36.0X2SPoisoning by penicillins, intentional self-harm, sequelaYesT36.0X3Poisoning by penicillins, assault
Frequently asked questions
What is ICD-10 code T36.4X?
T36.4X is an ICD-10-CM diagnosis code for Poisoning by, adverse effect of and underdosing of tetracyclines.
Is T36.4X a billable code?
No. T36.4X is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is T36.4X in?
T36.4X falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T36.4X become effective?
T36.4X has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T36.4X?
T36.4X belongs to category T36, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.