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ICD-10-CM · FY 2026 APRIL UPDATE

T36.AX

Poisoning by, adverse effect of and underdosing of fluoroquinolone antibiotics

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
T36.AX1Poisoning by fluoroquinolone antibiotics, accidental (unintentional)Category
T36.AX1APoisoning by fluoroquinolone antibiotics, accidental (unintentional), initial encounterBillable
T36.AX1DPoisoning by fluoroquinolone antibiotics, accidental (unintentional), subsequent encounterBillable
T36.AX1SPoisoning by fluoroquinolone antibiotics, accidental (unintentional), sequelaBillable
T36.AX2Poisoning by fluoroquinolone antibiotics, intentional self-harmCategory
T36.AX2APoisoning by fluoroquinolone antibiotics, intentional self-harm, initial encounterBillable
T36.AX2DPoisoning by fluoroquinolone antibiotics, intentional self-harm, subsequent encounterBillable
T36.AX2SPoisoning by fluoroquinolone antibiotics, intentional self-harm, sequelaBillable
T36.AX3Poisoning by fluoroquinolone antibiotics, assaultCategory
T36.AX3APoisoning by fluoroquinolone antibiotics, assault, initial encounterBillable
T36.AX3DPoisoning by fluoroquinolone antibiotics, assault, subsequent encounterBillable
T36.AX3SPoisoning by fluoroquinolone antibiotics, assault, sequelaBillable
T36.AX4Poisoning by fluoroquinolone antibiotics, undeterminedCategory
T36.AX4APoisoning by fluoroquinolone antibiotics, undetermined, initial encounterBillable
T36.AX4DPoisoning by fluoroquinolone antibiotics, undetermined, subsequent encounterBillable
T36.AX4SPoisoning by fluoroquinolone antibiotics, undetermined, sequelaBillable
T36.AX5Adverse effect of fluoroquinolone antibioticsCategory
T36.AX5AAdverse effect of fluoroquinolone antibiotics, initial encounterBillable
T36.AX5DAdverse effect of fluoroquinolone antibiotics, subsequent encounterBillable
T36.AX5SAdverse effect of fluoroquinolone antibiotics, sequelaBillable
T36.AX6Underdosing of fluoroquinolone antibioticsCategory
T36.AX6AUnderdosing of fluoroquinolone antibiotics, initial encounterBillable
T36.AX6DUnderdosing of fluoroquinolone antibiotics, subsequent encounterBillable
T36.AX6SUnderdosing of fluoroquinolone antibiotics, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.