T65.3X1 — Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional)

Not billable

Is T65.3X1 billable?

No — T65.3X1 is a non-billable header code. T65.3X1 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 3 billable codes beneath T65.3X1.

Billable codes under this header

T65.3X1AToxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional), initial encounter
T65.3X1DToxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional), subsequent encounter
T65.3X1SToxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional), sequela

T65.3X1 at a glance

Code	T65.3X1
Description	Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional)
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Inclusion terms

Alternative wording in documentation that is classified to T65.3X1.

Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues NOS

Excludes1 — never code together — inherited from T51-T65

The conditions below can never be reported together with T65.3X1 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.-)

Use additional code — inherited from Chapter 19

Report an additional code alongside T65.3X1 to fully describe the condition. T65.3X1 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 T65.3X1 to fully describe the condition. T65.3X1 is sequenced first.

code(s):
for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
personal history of foreign body fully removed (Z87.821)
to identify any retained foreign body, if applicable (Z18.-)

Excludes2 — not included here — inherited from Chapter 19

The conditions below are not part of T65.3X1, but a patient may have both at the same time. When documentation supports it, T65.3X1 and the excluded code may both be reported.

birth trauma (P10-P15)
obstetric trauma (O70-O71)

What codes fall under T65.3X1? (3)

How long has T65.3X1 existed?

T65.3X1 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.