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ICD-10-CM · FY 2026 APRIL UPDATE

T40.42

Poisoning by, adverse effect of and underdosing of tramadol

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
T40.421Poisoning by tramadol, accidental (unintentional)Category
T40.421APoisoning by tramadol, accidental (unintentional), initial encounterBillable
T40.421DPoisoning by tramadol, accidental (unintentional), subsequent encounterBillable
T40.421SPoisoning by tramadol, accidental (unintentional), sequelaBillable
T40.422Poisoning by tramadol, intentional self-harmCategory
T40.422APoisoning by tramadol, intentional self-harm, initial encounterBillable
T40.422DPoisoning by tramadol, intentional self-harm, subsequent encounterBillable
T40.422SPoisoning by tramadol, intentional self-harm, sequelaBillable
T40.423Poisoning by tramadol, assaultCategory
T40.423APoisoning by tramadol, assault, initial encounterBillable
T40.423DPoisoning by tramadol, assault, subsequent encounterBillable
T40.423SPoisoning by tramadol, assault, sequelaBillable
T40.424Poisoning by tramadol, undeterminedCategory
T40.424APoisoning by tramadol, undetermined, initial encounterBillable
T40.424DPoisoning by tramadol, undetermined, subsequent encounterBillable
T40.424SPoisoning by tramadol, undetermined, sequelaBillable
T40.425Adverse effect of tramadolCategory
T40.425AAdverse effect of tramadol, initial encounterBillable
T40.425DAdverse effect of tramadol, subsequent encounterBillable
T40.425SAdverse effect of tramadol, sequelaBillable
T40.426Underdosing of tramadolCategory
T40.426AUnderdosing of tramadol, initial encounterBillable
T40.426DUnderdosing of tramadol, subsequent encounterBillable
T40.426SUnderdosing of tramadol, 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.