T46.4 — Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors
Is T46.4 billable?
No — T46.4 is a non-billable header code. T46.4 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 18 billable codes beneath T46.4.
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
- T46.4X2APoisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, initial encounter
- T46.4X2DPoisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, subsequent encounter
- T46.4X2SPoisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, sequela
- T46.4X3APoisoning by angiotensin-converting-enzyme inhibitors, assault, initial encounter
- T46.4X3DPoisoning by angiotensin-converting-enzyme inhibitors, assault, subsequent encounter
- T46.4X3SPoisoning by angiotensin-converting-enzyme inhibitors, assault, sequela
- T46.4X4APoisoning by angiotensin-converting-enzyme inhibitors, undetermined, initial encounter
- T46.4X4DPoisoning by angiotensin-converting-enzyme inhibitors, undetermined, subsequent encounter
- T46.4X4SPoisoning by angiotensin-converting-enzyme inhibitors, undetermined, sequela
- T46.4X5AAdverse effect of angiotensin-converting-enzyme inhibitors, initial encounter
- T46.4X5DAdverse effect of angiotensin-converting-enzyme inhibitors, subsequent encounter
- T46.4X5SAdverse effect of angiotensin-converting-enzyme inhibitors, sequela
- T46.4X6AUnderdosing of angiotensin-converting-enzyme inhibitors, initial encounter
- T46.4X6DUnderdosing of angiotensin-converting-enzyme inhibitors, subsequent encounter
- T46.4X6SUnderdosing of angiotensin-converting-enzyme inhibitors, sequela
T46.4 at a glance
| Code | T46.4 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors |
| 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 T36-T50
The conditions below can never be reported together with T46.4 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 T46.4 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 T46.4. T46.4 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T46.4 to fully describe the condition. T46.4 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 T46.4 to fully describe the condition. T46.4 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T46.4, but a patient may have both at the same time. When documentation supports it, T46.4 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T46.4, but a patient may have both at the same time. When documentation supports it, T46.4 and the excluded code may both be reported.
What codes fall under T46.4? (1)
How long has T46.4 existed?
T46.4 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 family? (9)
- T46.0Poisoning by, adverse effect of and underdosing of cardiac-stimulant glycosides and drugs of similar actionnot billable
- T46.1Poisoning by, adverse effect of and underdosing of calcium-channel blockersnot billable
- T46.2Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs, not elsewhere classifiednot billable
- T46.3Poisoning by, adverse effect of and underdosing of coronary vasodilatorsnot billable
- T46.5Poisoning by, adverse effect of and underdosing of other antihypertensive drugsnot billable
- T46.6Poisoning by, adverse effect of and underdosing of antihyperlipidemic and antiarteriosclerotic drugsnot billable
- T46.7Poisoning by, adverse effect of and underdosing of peripheral vasodilatorsnot billable
- T46.8Poisoning by, adverse effect of and underdosing of antivaricose drugs, including sclerosing agentsnot billable
- T46.9Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily affecting the cardiovascular systemnot billable