Is T39.4X a billable code?
No. T39.4X is a header code that groups 18 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T39.4X: Poisoning by, adverse effect of and underdosing of antirheumatics, not elsewhere classified
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T39.4X groups related diagnoses under poisoning by, adverse effect of and underdosing of antirheumatics, not elsewhere classified. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T39.4X
- T39.4X1APoisoning by antirheumatics, not elsewhere classified, accidental (unintentional), initial encounter
- T39.4X1DPoisoning by antirheumatics, not elsewhere classified, accidental (unintentional), subsequent encounter
- T39.4X1SPoisoning by antirheumatics, not elsewhere classified, accidental (unintentional), sequela
- T39.4X2APoisoning by antirheumatics, not elsewhere classified, intentional self-harm, initial encounter
- T39.4X2DPoisoning by antirheumatics, not elsewhere classified, intentional self-harm, subsequent encounter
- T39.4X2SPoisoning by antirheumatics, not elsewhere classified, intentional self-harm, sequela
- T39.4X3APoisoning by antirheumatics, not elsewhere classified, assault, initial encounter
- T39.4X3DPoisoning by antirheumatics, not elsewhere classified, assault, subsequent encounter
- T39.4X3SPoisoning by antirheumatics, not elsewhere classified, assault, sequela
- T39.4X4APoisoning by antirheumatics, not elsewhere classified, undetermined, initial encounter
- T39.4X4DPoisoning by antirheumatics, not elsewhere classified, undetermined, subsequent encounter
- T39.4X4SPoisoning by antirheumatics, not elsewhere classified, undetermined, sequela
- T39.4X5AAdverse effect of antirheumatics, not elsewhere classified, initial encounter
- T39.4X5DAdverse effect of antirheumatics, not elsewhere classified, subsequent encounter
- T39.4X5SAdverse effect of antirheumatics, not elsewhere classified, sequela
- T39.4X6AUnderdosing of antirheumatics, not elsewhere classified, initial encounter
- T39.4X6DUnderdosing of antirheumatics, not elsewhere classified, subsequent encounter
- T39.4X6SUnderdosing of antirheumatics, not elsewhere classified, sequela
T39.4X questions
What does T39.4X mean?
T39.4X is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of antirheumatics, not elsewhere classified. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.