T43.506 — Underdosing of unspecified antipsychotics and neuroleptics
Is T43.506 billable?
No — T43.506 is a non-billable header code. T43.506 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 T43.506.
T43.506 at a glance
| Code | T43.506 |
|---|---|
| Description | Underdosing of unspecified antipsychotics and neuroleptics |
| 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 T43.506 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 T43.5
The conditions below can never be reported together with T43.506 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 rauwolfia (T46.5-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T43.506. T43.506 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T43.506 to fully describe the condition. T43.506 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 T43.506 to fully describe the condition. T43.506 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T43.506, but a patient may have both at the same time. When documentation supports it, T43.506 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T43.506, but a patient may have both at the same time. When documentation supports it, T43.506 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T43
The conditions below are not part of T43.506, but a patient may have both at the same time. When documentation supports it, T43.506 and the excluded code may both be reported.
What codes fall under T43.506? (3)
How long has T43.506 existed?
T43.506 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 T43.50 family? (5)
- T43.501Poisoning by unspecified antipsychotics and neuroleptics, accidental (unintentional)not billable
- T43.502Poisoning by unspecified antipsychotics and neuroleptics, intentional self-harmnot billable
- T43.503Poisoning by unspecified antipsychotics and neuroleptics, assaultnot billable
- T43.504Poisoning by unspecified antipsychotics and neuroleptics, undeterminednot billable
- T43.505Adverse effect of unspecified antipsychotics and neurolepticsnot billable