T59.5X — Toxic effect of fluorine gas and hydrogen fluoride
Is T59.5X billable?
No — T59.5X is a non-billable header code. T59.5X groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 12 billable codes beneath T59.5X.
Billable codes under this header
- T59.5X1AToxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional), initial encounter
- T59.5X1DToxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional), subsequent encounter
- T59.5X1SToxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional), sequela
- T59.5X2AToxic effect of fluorine gas and hydrogen fluoride, intentional self-harm, initial encounter
- T59.5X2DToxic effect of fluorine gas and hydrogen fluoride, intentional self-harm, subsequent encounter
- T59.5X2SToxic effect of fluorine gas and hydrogen fluoride, intentional self-harm, sequela
- T59.5X3AToxic effect of fluorine gas and hydrogen fluoride, assault, initial encounter
- T59.5X3DToxic effect of fluorine gas and hydrogen fluoride, assault, subsequent encounter
- T59.5X3SToxic effect of fluorine gas and hydrogen fluoride, assault, sequela
- 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
T59.5X at a glance
| Code | T59.5X |
|---|---|
| Description | Toxic effect of fluorine gas and hydrogen fluoride |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together — inherited from T51-T65
The conditions below can never be reported together with T59.5X on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- contact with and (suspected) exposure to toxic substances (Z77.-)
Excludes1 — never code together — inherited from T59
The conditions below can never be reported together with T59.5X on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- chlorofluorocarbons (T53.5)
Use additional code — inherited from Chapter 19
Report an additional code alongside T59.5X to fully describe the condition. T59.5X is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T51-T65
Report an additional code alongside T59.5X to fully describe the condition. T59.5X is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T59.5X, but a patient may have both at the same time. When documentation supports it, T59.5X and the excluded code may both be reported.
What codes fall under T59.5X? (4)
- T59.5X1Toxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional)not billable
- T59.5X2Toxic effect of fluorine gas and hydrogen fluoride, intentional self-harmnot billable
- T59.5X3Toxic effect of fluorine gas and hydrogen fluoride, assaultnot billable
- T59.5X4Toxic effect of fluorine gas and hydrogen fluoride, undeterminednot billable
How long has T59.5X existed?
T59.5X has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.