2026 ICD-10-CM Diagnosis Code T36.AX5
Adverse effect of fluoroquinolone antibiotics
- ICD-10-CM Code:
- T36.AX5
- ICD-10 Code for:
- Adverse effect of fluoroquinolone antibiotics
- Is Billable?
- Not Valid for Submission
- Code Navigator:
T36.AX5 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of adverse effect of fluoroquinolone antibiotics. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.
Specific Coding Applicable to Adverse effect of fluoroquinolone antibiotics
Non-specific codes like T36.AX5 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for adverse effect of fluoroquinolone antibiotics:
Coding Guidelines
When coding an adverse effect of a drug that has been correctly prescribed and properly administered, assign the appropriate code for the nature of the adverse effect followed by the appropriate code for the adverse effect of the drug.
The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of systemic antibiotics (T36). Use the following options for the aplicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Table of Drugs and Chemicals
The code is referenced in the Table of Drugs and Chemicals, this table contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents.
According to ICD-10-CM coding guidelines it is advised to do not code directly from the Table of Drugs and Chemicals, instead always refer back to the Tabular List when doing the initial coding. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. It is important to use as many codes as necessary to specify all reported drugs, medicinal or chemical substances. If the same diagnosis code describes the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, utilize the code only once.
| Substance | Poisoning Accidental (unintentional) |
Poisoning Accidental (self-harm) |
Poisoning Assault |
Poisoning Undetermined |
Adverse effect |
Underdosing |
|---|---|---|---|---|---|---|
| Fluoroquinolone antibiotics | T36.AX1 | T36.AX2 | T36.AX3 | T36.AX4 | T36.AX5 | T36.AX6 |
Code History
- FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
