T48 — Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system
Not billable
Is T48 billable?
No — T48 is a non-billable header code. T48 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 60 billable codes beneath T48.
Billable codes under this header
- T48.0X1APoisoning by oxytocic drugs, accidental (unintentional), initial encounter
- T48.0X1DPoisoning by oxytocic drugs, accidental (unintentional), subsequent encounter
- T48.0X1SPoisoning by oxytocic drugs, accidental (unintentional), sequela
- T48.0X2APoisoning by oxytocic drugs, intentional self-harm, initial encounter
- T48.0X2DPoisoning by oxytocic drugs, intentional self-harm, subsequent encounter
- T48.0X2SPoisoning by oxytocic drugs, intentional self-harm, sequela
- T48.0X3APoisoning by oxytocic drugs, assault, initial encounter
- T48.0X3DPoisoning by oxytocic drugs, assault, subsequent encounter
- T48.0X3SPoisoning by oxytocic drugs, assault, sequela
- T48.0X4APoisoning by oxytocic drugs, undetermined, initial encounter
- T48.0X4DPoisoning by oxytocic drugs, undetermined, subsequent encounter
- T48.0X4SPoisoning by oxytocic drugs, undetermined, sequela
- T48.0X5AAdverse effect of oxytocic drugs, initial encounter
- T48.0X5DAdverse effect of oxytocic drugs, subsequent encounter
- T48.0X5SAdverse effect of oxytocic drugs, sequela
- T48.0X6AUnderdosing of oxytocic drugs, initial encounter
- T48.0X6DUnderdosing of oxytocic drugs, subsequent encounter
- T48.0X6SUnderdosing of oxytocic drugs, sequela
- T48.1X1APoisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional), initial encounter
- T48.1X1DPoisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional), subsequent encounter
- T48.1X1SPoisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional), sequela
- T48.1X2APoisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harm, initial encounter
- T48.1X2DPoisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harm, subsequent encounter
- T48.1X2SPoisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harm, sequela
- T48.1X3APoisoning by skeletal muscle relaxants [neuromuscular blocking agents], assault, initial encounter
- T48.1X3DPoisoning by skeletal muscle relaxants [neuromuscular blocking agents], assault, subsequent encounter
- T48.1X3SPoisoning by skeletal muscle relaxants [neuromuscular blocking agents], assault, sequela
- T48.1X4APoisoning by skeletal muscle relaxants [neuromuscular blocking agents], undetermined, initial encounter
- T48.1X4DPoisoning by skeletal muscle relaxants [neuromuscular blocking agents], undetermined, subsequent encounter
- T48.1X4SPoisoning by skeletal muscle relaxants [neuromuscular blocking agents], undetermined, sequela
- T48.1X5AAdverse effect of skeletal muscle relaxants [neuromuscular blocking agents], initial encounter
- T48.1X5DAdverse effect of skeletal muscle relaxants [neuromuscular blocking agents], subsequent encounter
- T48.1X5SAdverse effect of skeletal muscle relaxants [neuromuscular blocking agents], sequela
- T48.1X6AUnderdosing of skeletal muscle relaxants [neuromuscular blocking agents], initial encounter
- T48.1X6DUnderdosing of skeletal muscle relaxants [neuromuscular blocking agents], subsequent encounter
- T48.1X6SUnderdosing of skeletal muscle relaxants [neuromuscular blocking agents], sequela
- T48.201APoisoning by unspecified drugs acting on muscles, accidental (unintentional), initial encounter
- T48.201DPoisoning by unspecified drugs acting on muscles, accidental (unintentional), subsequent encounter
- T48.201SPoisoning by unspecified drugs acting on muscles, accidental (unintentional), sequela
- T48.202APoisoning by unspecified drugs acting on muscles, intentional self-harm, initial encounter
- T48.202DPoisoning by unspecified drugs acting on muscles, intentional self-harm, subsequent encounter
- T48.202SPoisoning by unspecified drugs acting on muscles, intentional self-harm, sequela
- T48.203APoisoning by unspecified drugs acting on muscles, assault, initial encounter
- T48.203DPoisoning by unspecified drugs acting on muscles, assault, subsequent encounter
- T48.203SPoisoning by unspecified drugs acting on muscles, assault, sequela
- T48.204APoisoning by unspecified drugs acting on muscles, undetermined, initial encounter
- T48.204DPoisoning by unspecified drugs acting on muscles, undetermined, subsequent encounter
- T48.204SPoisoning by unspecified drugs acting on muscles, undetermined, sequela
- T48.205AAdverse effect of unspecified drugs acting on muscles, initial encounter
- T48.205DAdverse effect of unspecified drugs acting on muscles, subsequent encounter
- T48.205SAdverse effect of unspecified drugs acting on muscles, sequela
- T48.206AUnderdosing of unspecified drugs acting on muscles, initial encounter
- T48.206DUnderdosing of unspecified drugs acting on muscles, subsequent encounter
- T48.206SUnderdosing of unspecified drugs acting on muscles, sequela
- T48.291APoisoning by other drugs acting on muscles, accidental (unintentional), initial encounter
- T48.291DPoisoning by other drugs acting on muscles, accidental (unintentional), subsequent encounter
- T48.291SPoisoning by other drugs acting on muscles, accidental (unintentional), sequela
- T48.292APoisoning by other drugs acting on muscles, intentional self-harm, initial encounter
- T48.292DPoisoning by other drugs acting on muscles, intentional self-harm, subsequent encounter
- T48.292SPoisoning by other drugs acting on muscles, intentional self-harm, sequela
T48 at a glance
| Code | T48 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system |
| 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 T48 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 T48. T48 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T48 to fully describe the condition. T48 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 T48 to fully describe the condition. T48 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T48, but a patient may have both at the same time. When documentation supports it, T48 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T48, but a patient may have both at the same time. When documentation supports it, T48 and the excluded code may both be reported.
What codes fall under T48? (8)
- T48.0Poisoning by, adverse effect of and underdosing of oxytocic drugsnot billable
- T48.1Poisoning by, adverse effect of and underdosing of skeletal muscle relaxants [neuromuscular blocking agents]not billable
- T48.2Poisoning by, adverse effect of and underdosing of other and unspecified drugs acting on musclesnot billable
- T48.3Poisoning by, adverse effect of and underdosing of antitussivesnot billable
- T48.4Poisoning by, adverse effect of and underdosing of expectorantsnot billable
- T48.5Poisoning by, adverse effect of and underdosing of other anti-common-cold drugsnot billable
- T48.6Poisoning by, adverse effect of and underdosing of antiasthmatics, not elsewhere classifiednot billable
- T48.9Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily acting on the respiratory systemnot billable
How long has T48 existed?
T48 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.