T63.311Header code — not billable
Toxic effect of venom of black widow spider, accidental (unintentional)
Short description: Toxic effect of venom of black widow spider, accidental
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T63
- Effective date
- October 1, 2026
Related codes in category T63
T63Toxic effect of contact with venomous animals and plantsT63.0Toxic effect of snake venomT63.00Toxic effect of unspecified snake venomT63.001Toxic effect of unsp snake venom, accidental (unintentional)T63.001AToxic effect of unsp snake venom, accidental, initYesT63.001DToxic effect of unsp snake venom, accidental, subsYesT63.001SToxic effect of unsp snake venom, accidental, sequelaYesT63.002Toxic effect of unsp snake venom, intentional self-harmT63.002AToxic effect of unsp snake venom, self-harm, initYesT63.002DToxic effect of unsp snake venom, self-harm, subsYesT63.002SToxic effect of unsp snake venom, self-harm, sequelaYesT63.003Toxic effect of unspecified snake venom, assault
Frequently asked questions
What is ICD-10 code T63.311?
T63.311 is an ICD-10-CM diagnosis code for Toxic effect of venom of black widow spider, accidental (unintentional).
Is T63.311 a billable code?
No. T63.311 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 T63.311 in?
T63.311 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T63.311 become effective?
T63.311 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T63.311?
T63.311 belongs to category T63, 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.