T42.8X6 — Underdosing of antiparkinsonism drugs and other central muscle-tone depressants
Is T42.8X6 billable?
No — T42.8X6 is a non-billable header code. T42.8X6 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 3 billable codes beneath T42.8X6.
Billable codes under this header
- T42.8X6AUnderdosing of antiparkinsonism drugs and other central muscle-tone depressants, initial encounter
- T42.8X6DUnderdosing of antiparkinsonism drugs and other central muscle-tone depressants, subsequent encounter
- T42.8X6SUnderdosing of antiparkinsonism drugs and other central muscle-tone depressants, sequela
T42.8X6 at a glance
| Code | T42.8X6 |
|---|---|
| Description | Underdosing of antiparkinsonism drugs and other central muscle-tone depressants |
| 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 T42.8X6 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 T42.8X6. T42.8X6 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T42.8X6 to fully describe the condition. T42.8X6 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 T42.8X6 to fully describe the condition. T42.8X6 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T42.8X6, but a patient may have both at the same time. When documentation supports it, T42.8X6 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T42.8X6, but a patient may have both at the same time. When documentation supports it, T42.8X6 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T42
The conditions below are not part of T42.8X6, but a patient may have both at the same time. When documentation supports it, T42.8X6 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 T42.8X6? (3)
- T42.8X6AUnderdosing of antiparkinsonism drugs and other central muscle-tone depressants, initial encounter
- T42.8X6DUnderdosing of antiparkinsonism drugs and other central muscle-tone depressants, subsequent encounter
- T42.8X6SUnderdosing of antiparkinsonism drugs and other central muscle-tone depressants, sequela
How long has T42.8X6 existed?
T42.8X6 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.
What other codes are in the T42.8X family? (5)
- T42.8X1Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional)not billable
- T42.8X2Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harmnot billable
- T42.8X3Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assaultnot billable
- T42.8X4Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undeterminednot billable
- T42.8X5Adverse effect of antiparkinsonism drugs and other central muscle-tone depressantsnot billable