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ICD-10-CM · FY 2026 APRIL UPDATE

T50.3

Poisoning by, adverse effect of and underdosing of electrolytic, caloric and water-balance agents

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
T50.3XPoisoning by, adverse effect of and underdosing of electrolytic, caloric and water-balance agentsCategory
T50.3X1Poisoning by electrolytic, caloric and water-balance agents, accidental (unintentional)Category
T50.3X1APoisoning by electrolytic, caloric and water-balance agents, accidental (unintentional), initial encounterBillable
T50.3X1DPoisoning by electrolytic, caloric and water-balance agents, accidental (unintentional), subsequent encounterBillable
T50.3X1SPoisoning by electrolytic, caloric and water-balance agents, accidental (unintentional), sequelaBillable
T50.3X2Poisoning by electrolytic, caloric and water-balance agents, intentional self-harmCategory
T50.3X2APoisoning by electrolytic, caloric and water-balance agents, intentional self-harm, initial encounterBillable
T50.3X2DPoisoning by electrolytic, caloric and water-balance agents, intentional self-harm, subsequent encounterBillable
T50.3X2SPoisoning by electrolytic, caloric and water-balance agents, intentional self-harm, sequelaBillable
T50.3X3Poisoning by electrolytic, caloric and water-balance agents, assaultCategory
T50.3X3APoisoning by electrolytic, caloric and water-balance agents, assault, initial encounterBillable
T50.3X3DPoisoning by electrolytic, caloric and water-balance agents, assault, subsequent encounterBillable
T50.3X3SPoisoning by electrolytic, caloric and water-balance agents, assault, sequelaBillable
T50.3X4Poisoning by electrolytic, caloric and water-balance agents, undeterminedCategory
T50.3X4APoisoning by electrolytic, caloric and water-balance agents, undetermined, initial encounterBillable
T50.3X4DPoisoning by electrolytic, caloric and water-balance agents, undetermined, subsequent encounterBillable
T50.3X4SPoisoning by electrolytic, caloric and water-balance agents, undetermined, sequelaBillable
T50.3X5Adverse effect of electrolytic, caloric and water-balance agentsCategory
T50.3X5AAdverse effect of electrolytic, caloric and water-balance agents, initial encounterBillable
T50.3X5DAdverse effect of electrolytic, caloric and water-balance agents, subsequent encounterBillable
T50.3X5SAdverse effect of electrolytic, caloric and water-balance agents, sequelaBillable
T50.3X6Underdosing of electrolytic, caloric and water-balance agentsCategory
T50.3X6AUnderdosing of electrolytic, caloric and water-balance agents, initial encounterBillable
T50.3X6DUnderdosing of electrolytic, caloric and water-balance agents, subsequent encounterBillable
T50.3X6SUnderdosing of electrolytic, caloric and water-balance agents, 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.