T48.9 — Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily acting on the respiratory system
Not billable
Is T48.9 billable?
No — T48.9 is a non-billable header code. T48.9 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 36 billable codes beneath T48.9.
Billable codes under this header
- T48.901APoisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional), initial encounter
- T48.901DPoisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional), subsequent encounter
- T48.901SPoisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional), sequela
- T48.902APoisoning by unspecified agents primarily acting on the respiratory system, intentional self-harm, initial encounter
- T48.902DPoisoning by unspecified agents primarily acting on the respiratory system, intentional self-harm, subsequent encounter
- T48.902SPoisoning by unspecified agents primarily acting on the respiratory system, intentional self-harm, sequela
- T48.903APoisoning by unspecified agents primarily acting on the respiratory system, assault, initial encounter
- T48.903DPoisoning by unspecified agents primarily acting on the respiratory system, assault, subsequent encounter
- T48.903SPoisoning by unspecified agents primarily acting on the respiratory system, assault, sequela
- T48.904APoisoning by unspecified agents primarily acting on the respiratory system, undetermined, initial encounter
- T48.904DPoisoning by unspecified agents primarily acting on the respiratory system, undetermined, subsequent encounter
- T48.904SPoisoning by unspecified agents primarily acting on the respiratory system, undetermined, sequela
- T48.905AAdverse effect of unspecified agents primarily acting on the respiratory system, initial encounter
- T48.905DAdverse effect of unspecified agents primarily acting on the respiratory system, subsequent encounter
- T48.905SAdverse effect of unspecified agents primarily acting on the respiratory system, sequela
- T48.906AUnderdosing of unspecified agents primarily acting on the respiratory system, initial encounter
- T48.906DUnderdosing of unspecified agents primarily acting on the respiratory system, subsequent encounter
- T48.906SUnderdosing of unspecified agents primarily acting on the respiratory system, sequela
- T48.991APoisoning by other agents primarily acting on the respiratory system, accidental (unintentional), initial encounter
- T48.991DPoisoning by other agents primarily acting on the respiratory system, accidental (unintentional), subsequent encounter
- T48.991SPoisoning by other agents primarily acting on the respiratory system, accidental (unintentional), sequela
- T48.992APoisoning by other agents primarily acting on the respiratory system, intentional self-harm, initial encounter
- T48.992DPoisoning by other agents primarily acting on the respiratory system, intentional self-harm, subsequent encounter
- T48.992SPoisoning by other agents primarily acting on the respiratory system, intentional self-harm, sequela
- T48.993APoisoning by other agents primarily acting on the respiratory system, assault, initial encounter
- T48.993DPoisoning by other agents primarily acting on the respiratory system, assault, subsequent encounter
- T48.993SPoisoning by other agents primarily acting on the respiratory system, assault, sequela
- T48.994APoisoning by other agents primarily acting on the respiratory system, undetermined, initial encounter
- T48.994DPoisoning by other agents primarily acting on the respiratory system, undetermined, subsequent encounter
- T48.994SPoisoning by other agents primarily acting on the respiratory system, undetermined, sequela
- T48.995AAdverse effect of other agents primarily acting on the respiratory system, initial encounter
- T48.995DAdverse effect of other agents primarily acting on the respiratory system, subsequent encounter
- T48.995SAdverse effect of other agents primarily acting on the respiratory system, sequela
- T48.996AUnderdosing of other agents primarily acting on the respiratory system, initial encounter
- T48.996DUnderdosing of other agents primarily acting on the respiratory system, subsequent encounter
- T48.996SUnderdosing of other agents primarily acting on the respiratory system, sequela
T48.9 at a glance
| Code | T48.9 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily acting on 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 T48.9 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 T48.9. T48.9 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T48.9 to fully describe the condition. T48.9 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 T48.9 to fully describe the condition. T48.9 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T48.9, but a patient may have both at the same time. When documentation supports it, T48.9 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T48.9, but a patient may have both at the same time. When documentation supports it, T48.9 and the excluded code may both be reported.
What codes fall under T48.9? (2)
How long has T48.9 existed?
T48.9 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 T48 family? (7)
- 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