Convert to ICD-10-CM: 
988.9 converts approximately to:
- 2015/16 ICD-10-CM T62.91XA Toxic effect of unspecified noxious substance eaten as food, accidental (unintentional), initial encounterOr: 
- 2015/16 ICD-10-CM T62.92XA Toxic effect of unspecified noxious substance eaten as food, intentional self-harm, initial encounterOr: 
- 2015/16 ICD-10-CM T62.93XA Toxic effect of unspecified noxious substance eaten as food, assault, initial encounterOr: 
- 2015/16 ICD-10-CM T62.94XA Toxic effect of unspecified noxious substance eaten as food, undetermined, initial encounter