Is T43.591 a billable ICD-10-CM code?

No. T43.591 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does T43.591 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).

T43.591

T43.591 — Poisoning by other antipsychotics and neuroleptics, accidental (unintentional)

Non-billable headerICD-10-CM

T43.591 is a non-billable header ICD-10-CM code for poisoning by other antipsychotics and neuroleptics, accidental (unintentional). It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T43

A: initial encounter
D: subsequent encounter
S: sequela

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Poisoning by other antipsychotics and neuroleptics NOS

Risk adjustment

T43.591 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead T43.591

3 child codes. Green means billable.

Related codes at this level

Codes that share T43.59. If T43.591 is not quite right, the correct code is usually one of these.

Questions about T43.591

Is T43.591 a billable ICD-10-CM code?: No. T43.591 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T43.591 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).