T56.811Header code — not billable
Toxic effect of thallium, accidental (unintentional)
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T56
- Effective date
- October 1, 2026
Related codes in category T56
T56Toxic effect of metalsT56.0Toxic effects of lead and its compoundsT56.0XToxic effects of lead and its compoundsT56.0X1Toxic effect of lead and its compounds, accidentalT56.0X1AToxic effect of lead and its compounds, accidental, initYesT56.0X1DToxic effect of lead and its compounds, accidental, subsYesT56.0X1SToxic effect of lead and its compounds, accidental, sequelaYesT56.0X2Toxic effect of lead and its compounds, self-harmT56.0X2AToxic effect of lead and its compounds, self-harm, initYesT56.0X2DToxic effect of lead and its compounds, self-harm, subsYesT56.0X2SToxic effect of lead and its compounds, self-harm, sequelaYesT56.0X3Toxic effect of lead and its compounds, assault
Frequently asked questions
What is ICD-10 code T56.811?
T56.811 is an ICD-10-CM diagnosis code for Toxic effect of thallium, accidental (unintentional).
Is T56.811 a billable code?
No. T56.811 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 T56.811 in?
T56.811 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T56.811 become effective?
T56.811 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T56.811?
T56.811 belongs to category T56, 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.