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ICD-10-CM · FY 2026 APRIL UPDATE

T43.21

Poisoning by, adverse effect of and underdosing of selective serotonin and norepinephrine reuptake inhibitors

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
T43.211Poisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional)Category
T43.211APoisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional), initial encounterBillable
T43.211DPoisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional), subsequent encounterBillable
T43.211SPoisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional), sequelaBillable
T43.212Poisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harmCategory
T43.212APoisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harm, initial encounterBillable
T43.212DPoisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harm, subsequent encounterBillable
T43.212SPoisoning by selective serotonin and norepinephrine reuptake inhibitors, intentional self-harm, sequelaBillable
T43.213Poisoning by selective serotonin and norepinephrine reuptake inhibitors, assaultCategory
T43.213APoisoning by selective serotonin and norepinephrine reuptake inhibitors, assault, initial encounterBillable
T43.213DPoisoning by selective serotonin and norepinephrine reuptake inhibitors, assault, subsequent encounterBillable
T43.213SPoisoning by selective serotonin and norepinephrine reuptake inhibitors, assault, sequelaBillable
T43.214Poisoning by selective serotonin and norepinephrine reuptake inhibitors, undeterminedCategory
T43.214APoisoning by selective serotonin and norepinephrine reuptake inhibitors, undetermined, initial encounterBillable
T43.214DPoisoning by selective serotonin and norepinephrine reuptake inhibitors, undetermined, subsequent encounterBillable
T43.214SPoisoning by selective serotonin and norepinephrine reuptake inhibitors, undetermined, sequelaBillable
T43.215Adverse effect of selective serotonin and norepinephrine reuptake inhibitorsCategory
T43.215AAdverse effect of selective serotonin and norepinephrine reuptake inhibitors, initial encounterBillable
T43.215DAdverse effect of selective serotonin and norepinephrine reuptake inhibitors, subsequent encounterBillable
T43.215SAdverse effect of selective serotonin and norepinephrine reuptake inhibitors, sequelaBillable
T43.216Underdosing of selective serotonin and norepinephrine reuptake inhibitorsCategory
T43.216AUnderdosing of selective serotonin and norepinephrine reuptake inhibitors, initial encounterBillable
T43.216DUnderdosing of selective serotonin and norepinephrine reuptake inhibitors, subsequent encounterBillable
T43.216SUnderdosing of selective serotonin and norepinephrine reuptake inhibitors, 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.

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