T48.1X — Poisoning by, adverse effect of and underdosing of skeletal muscle relaxants [neuromuscular blocking agents]
Is T48.1X billable?
No — T48.1X is a non-billable header code. T48.1X 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 T48.1X.
Billable codes under this header
- 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
T48.1X at a glance
| Code | T48.1X |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of skeletal muscle relaxants [neuromuscular blocking agents] |
| 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 T48.1X 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 T48.1X. T48.1X describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T48.1X to fully describe the condition. T48.1X 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 T48.1X to fully describe the condition. T48.1X is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T48.1X, but a patient may have both at the same time. When documentation supports it, T48.1X and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T48.1X, but a patient may have both at the same time. When documentation supports it, T48.1X and the excluded code may both be reported.
What codes fall under T48.1X? (6)
- T48.1X1Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional)not billable
- T48.1X2Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harmnot billable
- T48.1X3Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], assaultnot billable
- T48.1X4Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], undeterminednot billable
- T48.1X5Adverse effect of skeletal muscle relaxants [neuromuscular blocking agents]not billable
- T48.1X6Underdosing of skeletal muscle relaxants [neuromuscular blocking agents]not billable
How long has T48.1X existed?
T48.1X 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.