Is T39.4X4S a billable ICD-10-CM code?

Yes. T39.4X4S is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does T39.4X4S 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).

What cannot be coded together with T39.4X4S?

T39.4X4S carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above T39.4X4S (T39.4) and apply to it just the same.

T39.4X4S

T39.4X4S — Poisoning by antirheumatics, not elsewhere classified, undetermined, sequela

Billable / specific codeICD-10-CMPOA exempt

T39.4X4S is a billable, specific ICD-10-CM code for poisoning by antirheumatics, not elsewhere classified, undetermined, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to each code from category T39

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above T39.4X4S

These are not written on T39.4X4S, but they bind it: a note on a category applies to every code beneath it. Billing T39.4X4S with anything listed here is a denial.

Written on T39.4 — Poisoning by, adverse effect of and underdosing of antirheumatics, not elsewhere classified

poisoning by, adverse effect of and underdosing of glucocorticoids (T38.0-)
poisoning by, adverse effect of and underdosing of salicylates (T39.0-)

Risk adjustment

T39.4X4S 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 history

T39.4X4S has not changed since FY2024 — no addition, revision or deletion across the FY2024–FY2027 ICD-10-CM releases.

Related codes at this level

Codes that share T39.4X4. If T39.4X4S is not quite right, the correct code is usually one of these.

Questions about T39.4X4S

Is T39.4X4S a billable ICD-10-CM code?: Yes. T39.4X4S is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T39.4X4S 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).
What cannot be coded together with T39.4X4S?: T39.4X4S carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above T39.4X4S (T39.4) and apply to it just the same.