Is T59.5X4 a billable code?
No. T59.5X4 is a header code that groups 3 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T59.5X4: Toxic effect of fluorine gas and hydrogen fluoride, undetermined
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T59.5X4 groups related diagnoses under toxic effect of fluorine gas and hydrogen fluoride, undetermined. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T59.5X4
- T59.5X4AToxic effect of fluorine gas and hydrogen fluoride, undetermined, initial encounter
- T59.5X4DToxic effect of fluorine gas and hydrogen fluoride, undetermined, subsequent encounter
- T59.5X4SToxic effect of fluorine gas and hydrogen fluoride, undetermined, sequela
Other codes in T59.5X Toxic effect of fluorine gas and hydrogen fluoride
T59.5X4 questions
What does T59.5X4 mean?
T59.5X4 is the ICD-10-CM code for Toxic effect of fluorine gas and hydrogen fluoride, undetermined. 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.