T36.4 — Poisoning by, adverse effect of and underdosing of tetracyclines
Is T36.4 billable?
No — T36.4 is a non-billable header code. T36.4 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 T36.4.
Billable codes under this header
- T36.4X1APoisoning by tetracyclines, accidental (unintentional), initial encounter
- T36.4X1DPoisoning by tetracyclines, accidental (unintentional), subsequent encounter
- T36.4X1SPoisoning by tetracyclines, accidental (unintentional), sequela
- T36.4X2APoisoning by tetracyclines, intentional self-harm, initial encounter
- T36.4X2DPoisoning by tetracyclines, intentional self-harm, subsequent encounter
- T36.4X2SPoisoning by tetracyclines, intentional self-harm, sequela
- T36.4X3APoisoning by tetracyclines, assault, initial encounter
- T36.4X3DPoisoning by tetracyclines, assault, subsequent encounter
- T36.4X3SPoisoning by tetracyclines, assault, sequela
- T36.4X4APoisoning by tetracyclines, undetermined, initial encounter
- T36.4X4DPoisoning by tetracyclines, undetermined, subsequent encounter
- T36.4X4SPoisoning by tetracyclines, undetermined, sequela
- T36.4X5AAdverse effect of tetracyclines, initial encounter
- T36.4X5DAdverse effect of tetracyclines, subsequent encounter
- T36.4X5SAdverse effect of tetracyclines, sequela
- T36.4X6AUnderdosing of tetracyclines, initial encounter
- T36.4X6DUnderdosing of tetracyclines, subsequent encounter
- T36.4X6SUnderdosing of tetracyclines, sequela
T36.4 at a glance
| Code | T36.4 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of tetracyclines |
| 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 T36.4 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-)
Excludes1 — never code together — inherited from T36
The conditions below can never be reported together with T36.4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T36.4. T36.4 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T36.4 to fully describe the condition. T36.4 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 T36.4 to fully describe the condition. T36.4 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T36.4, but a patient may have both at the same time. When documentation supports it, T36.4 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T36.4, but a patient may have both at the same time. When documentation supports it, T36.4 and the excluded code may both be reported.
What codes fall under T36.4? (1)
How long has T36.4 existed?
T36.4 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 T36 family? (10)
- T36.0Poisoning by, adverse effect of and underdosing of penicillinsnot billable
- T36.1Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibioticsnot billable
- T36.2Poisoning by, adverse effect of and underdosing of chloramphenicol groupnot billable
- T36.3Poisoning by, adverse effect of and underdosing of macrolidesnot billable
- T36.5Poisoning by, adverse effect of and underdosing of aminoglycosidesnot billable
- T36.6Poisoning by, adverse effect of and underdosing of rifampicinsnot billable
- T36.7Poisoning by, adverse effect of and underdosing of antifungal antibiotics, systemically usednot billable
- T36.8Poisoning by, adverse effect of and underdosing of other systemic antibioticsnot billable
- T36.9Poisoning by, adverse effect of and underdosing of unspecified systemic antibioticnot billable
- T36.APoisoning by, adverse effect of and underdosing of fluoroquinolone antibioticsnot billable