T36.A — Poisoning by, adverse effect of and underdosing of fluoroquinolone antibiotics
Is T36.A billable?
No — T36.A is a non-billable header code. T36.A 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.A.
Billable codes under this header
- T36.AX1APoisoning by fluoroquinolone antibiotics, accidental (unintentional), initial encounter
- T36.AX1DPoisoning by fluoroquinolone antibiotics, accidental (unintentional), subsequent encounter
- T36.AX1SPoisoning by fluoroquinolone antibiotics, accidental (unintentional), sequela
- T36.AX2APoisoning by fluoroquinolone antibiotics, intentional self-harm, initial encounter
- T36.AX2DPoisoning by fluoroquinolone antibiotics, intentional self-harm, subsequent encounter
- T36.AX2SPoisoning by fluoroquinolone antibiotics, intentional self-harm, sequela
- T36.AX3APoisoning by fluoroquinolone antibiotics, assault, initial encounter
- T36.AX3DPoisoning by fluoroquinolone antibiotics, assault, subsequent encounter
- T36.AX3SPoisoning by fluoroquinolone antibiotics, assault, sequela
- T36.AX4APoisoning by fluoroquinolone antibiotics, undetermined, initial encounter
- T36.AX4DPoisoning by fluoroquinolone antibiotics, undetermined, subsequent encounter
- T36.AX4SPoisoning by fluoroquinolone antibiotics, undetermined, sequela
- T36.AX5AAdverse effect of fluoroquinolone antibiotics, initial encounter
- T36.AX5DAdverse effect of fluoroquinolone antibiotics, subsequent encounter
- T36.AX5SAdverse effect of fluoroquinolone antibiotics, sequela
- T36.AX6AUnderdosing of fluoroquinolone antibiotics, initial encounter
- T36.AX6DUnderdosing of fluoroquinolone antibiotics, subsequent encounter
- T36.AX6SUnderdosing of fluoroquinolone antibiotics, sequela
T36.A at a glance
| Code | T36.A |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of fluoroquinolone antibiotics |
| 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.A 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.A 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.A. T36.A 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.A to fully describe the condition. T36.A 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.A to fully describe the condition. T36.A is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T36.A, but a patient may have both at the same time. When documentation supports it, T36.A and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T36.A, but a patient may have both at the same time. When documentation supports it, T36.A and the excluded code may both be reported.
What codes fall under T36.A? (1)
How long has T36.A existed?
T36.A first appears in FY2026.
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
- T36.4Poisoning by, adverse effect of and underdosing of tetracyclinesnot 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