ICD-10-CM > Z00-Z99 > Z77-Z99 > Z91 > Z91.1 > Z91.19 Z91.19 Patient's noncompliance with other medical treatment and regimen Non-Billable/Non-Specific Applicable To Patient's nonadherence to medical treatment Codes Z91.190Patient's noncompliance with other medical treatment and regimen due to financial hardshipZ91.198Patient's noncompliance with other medical treatment and regimen for other reasonZ91.199Patient's noncompliance with other medical treatment and regimen due to unspecified reason