ICD-10-CM > Z00-Z99 > Z77-Z99 > Z91 > Z91.1 > Z91.11 Z91.11 Patient's noncompliance with dietary regimen Non-Billable/Non-Specific Code Also , if applicable, food insecurity (Z59.4-) Codes Z91.110Patient's noncompliance with dietary regimen due to financial hardshipZ91.118Patient's noncompliance with dietary regimen for other reasonZ91.119Patient's noncompliance with dietary regimen due to unspecified reason