T46.4X1 — Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional)
Is T46.4X1 billable?
No — T46.4X1 is a non-billable header code. T46.4X1 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 T46.4X1.
Billable codes under this header
- T46.4X1APoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), initial encounter
- T46.4X1DPoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), subsequent encounter
- T46.4X1SPoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), sequela
T46.4X1 at a glance
| Code | T46.4X1 |
|---|---|
| Description | Poisoning by angiotensin-converting-enzyme inhibitors, 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 T46.4X1.
- Poisoning by angiotensin-converting-enzyme inhibitors NOS
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T46.4X1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes1 — never code together — inherited from T46
The conditions below can never be reported together with T46.4X1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- poisoning by, adverse effect of and underdosing of metaraminol (T44.4)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T46.4X1. T46.4X1 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T46.4X1 to fully describe the condition. T46.4X1 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T46.4X1 to fully describe the condition. T46.4X1 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T46.4X1, but a patient may have both at the same time. When documentation supports it, T46.4X1 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T46.4X1, but a patient may have both at the same time. When documentation supports it, T46.4X1 and the excluded code may both be reported.
What codes fall under T46.4X1? (3)
- T46.4X1APoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), initial encounter
- T46.4X1DPoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), subsequent encounter
- T46.4X1SPoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), sequela
How long has T46.4X1 existed?
T46.4X1 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.
What other codes are in the T46.4X family? (5)
- T46.4X2Poisoning by angiotensin-converting-enzyme inhibitors, intentional self-harmnot billable
- T46.4X3Poisoning by angiotensin-converting-enzyme inhibitors, assaultnot billable
- T46.4X4Poisoning by angiotensin-converting-enzyme inhibitors, undeterminednot billable
- T46.4X5Adverse effect of angiotensin-converting-enzyme inhibitorsnot billable
- T46.4X6Underdosing of angiotensin-converting-enzyme inhibitorsnot billable