| Full description | Patient's unintentional underdosing of medication regimen for other reason |
| Billable | Yes |
| Chapter | Chapter 21: Factors influencing health status and contact with health services (Z00-Z99) |
| Section | Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) |
| Parent code | Z91.13 — Patient's unintentional underdosing of medication regimen |