T36.AX1

Poisoning by fluoroquinolone antibiotics, accidental (unintentional)

Not billable — category only FY2026 2025-10-01 → 2026-09-30 FY2026–2027 only

Exclusions 6 never code together

T36code

Excludes1

antineoplastic antibiotics (T45.1-)T45.1-
locally applied antibiotic NEC (T49.0)T49.0
topically used antibiotic for ear, nose and throat (T49.6)T49.6
topically used antibiotic for eye (T49.5)T49.5

S00-T88chapter

Excludes2

birth trauma (P10-P15)P10-P15
obstetric trauma (O70-O71)O70-O71

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 3

A initial encounter

D subsequent encounter

S sequela

Instructional notes 4

T36.AX1code

Inclusion terms

Poisoning by fluoroquinolone antibiotics NOS

S00-T88chapter

Notes

Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

Use additional code

code to identify any retained foreign body, if applicable (Z18.-)Z18.-

Index entries leading here 2 filed at T36

The index files this at T36. The tabular extends it — laterality, staging, or the 7th character — so these entries lead to the family rather than to T36.AX1 exactly.

Noncompliance Z91.199
- with
  - medication regimen NEC Z91.148
    - underdosing Z91.148
Underdosing Z91.14

Alongside this code 5 same parent — T36.AX

T36.AX2 Poisoning by fluoroquinolone antibiotics, self-harm category T36.AX3 Poisoning by fluoroquinolone antibiotics, assault category T36.AX4 Poisoning by fluoroquinolone antibiotics, undetermined category T36.AX5 Adverse effect of fluoroquinolone antibiotics category T36.AX6 Underdosing of fluoroquinolone antibiotics category

Subordinate codes 3

T36.AX1A Poisoning by fluoroquinolone antibiotics, accidental, init T36.AX1D Poisoning by fluoroquinolone antibiotics, accidental, subs T36.AX1S Poisoning by fluoroquinolone antibiot, accidental, sequela

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: no
Code set: FY2026
Parent: T36.AX
Block: T07-T88
Siblings: 5
Subordinate: 3

Present FY2026–FY2027.