T45.51 — Poisoning by, adverse effect of and underdosing of anticoagulants
Is T45.51 billable?
No — T45.51 is a non-billable header code. T45.51 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 T45.51.
Billable codes under this header
- T45.511APoisoning by anticoagulants, accidental (unintentional), initial encounter
- T45.511DPoisoning by anticoagulants, accidental (unintentional), subsequent encounter
- T45.511SPoisoning by anticoagulants, accidental (unintentional), sequela
- T45.512APoisoning by anticoagulants, intentional self-harm, initial encounter
- T45.512DPoisoning by anticoagulants, intentional self-harm, subsequent encounter
- T45.512SPoisoning by anticoagulants, intentional self-harm, sequela
- T45.513APoisoning by anticoagulants, assault, initial encounter
- T45.513DPoisoning by anticoagulants, assault, subsequent encounter
- T45.513SPoisoning by anticoagulants, assault, sequela
- T45.514APoisoning by anticoagulants, undetermined, initial encounter
- T45.514DPoisoning by anticoagulants, undetermined, subsequent encounter
- T45.514SPoisoning by anticoagulants, undetermined, sequela
- T45.515AAdverse effect of anticoagulants, initial encounter
- T45.515DAdverse effect of anticoagulants, subsequent encounter
- T45.515SAdverse effect of anticoagulants, sequela
- T45.516AUnderdosing of anticoagulants, initial encounter
- T45.516DUnderdosing of anticoagulants, subsequent encounter
- T45.516SUnderdosing of anticoagulants, sequela
T45.51 at a glance
| Code | T45.51 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of anticoagulants |
| 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 T45.51 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 T45.51. T45.51 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T45.51 to fully describe the condition. T45.51 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 T45.51 to fully describe the condition. T45.51 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T45.51, but a patient may have both at the same time. When documentation supports it, T45.51 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T45.51, but a patient may have both at the same time. When documentation supports it, T45.51 and the excluded code may both be reported.
What codes fall under T45.51? (6)
- T45.511Poisoning by anticoagulants, accidental (unintentional)not billable
- T45.512Poisoning by anticoagulants, intentional self-harmnot billable
- T45.513Poisoning by anticoagulants, assaultnot billable
- T45.514Poisoning by anticoagulants, undeterminednot billable
- T45.515Adverse effect of anticoagulantsnot billable
- T45.516Underdosing of anticoagulantsnot billable
How long has T45.51 existed?
T45.51 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.