T40.49 — Poisoning by, adverse effect of and underdosing of other synthetic narcotics
Is T40.49 billable?
No — T40.49 is a non-billable header code. T40.49 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 T40.49.
Billable codes under this header
- T40.491APoisoning by other synthetic narcotics, accidental (unintentional), initial encounter
- T40.491DPoisoning by other synthetic narcotics, accidental (unintentional), subsequent encounter
- T40.491SPoisoning by other synthetic narcotics, accidental (unintentional), sequela
- T40.492APoisoning by other synthetic narcotics, intentional self-harm, initial encounter
- T40.492DPoisoning by other synthetic narcotics, intentional self-harm, subsequent encounter
- T40.492SPoisoning by other synthetic narcotics, intentional self-harm, sequela
- T40.493APoisoning by other synthetic narcotics, assault, initial encounter
- T40.493DPoisoning by other synthetic narcotics, assault, subsequent encounter
- T40.493SPoisoning by other synthetic narcotics, assault, sequela
- T40.494APoisoning by other synthetic narcotics, undetermined, initial encounter
- T40.494DPoisoning by other synthetic narcotics, undetermined, subsequent encounter
- T40.494SPoisoning by other synthetic narcotics, undetermined, sequela
- T40.495AAdverse effect of other synthetic narcotics, initial encounter
- T40.495DAdverse effect of other synthetic narcotics, subsequent encounter
- T40.495SAdverse effect of other synthetic narcotics, sequela
- T40.496AUnderdosing of other synthetic narcotics, initial encounter
- T40.496DUnderdosing of other synthetic narcotics, subsequent encounter
- T40.496SUnderdosing of other synthetic narcotics, sequela
T40.49 at a glance
| Code | T40.49 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of other synthetic narcotics |
| 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 T40.49 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-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T40.49. T40.49 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T40.49 to fully describe the condition. T40.49 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 T40.49 to fully describe the condition. T40.49 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T40.49, but a patient may have both at the same time. When documentation supports it, T40.49 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T40.49, but a patient may have both at the same time. When documentation supports it, T40.49 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T40
The conditions below are not part of T40.49, but a patient may have both at the same time. When documentation supports it, T40.49 and the excluded code may both be reported.
- drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.-F19.-)
What codes fall under T40.49? (6)
- T40.491Poisoning by other synthetic narcotics, accidental (unintentional)not billable
- T40.492Poisoning by other synthetic narcotics, intentional self-harmnot billable
- T40.493Poisoning by other synthetic narcotics, assaultnot billable
- T40.494Poisoning by other synthetic narcotics, undeterminednot billable
- T40.495Adverse effect of other synthetic narcoticsnot billable
- T40.496Underdosing of other synthetic narcoticsnot billable
How long has T40.49 existed?
T40.49 first appears in FY2021 (FY2020 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.