Z91.12
Non-billablePatient's intentional underdosing of medication regimen
Z91.12 is the ICD-10-CM code for Patient's intentional underdosing of medication regimen. It is a non-billable category code — use a more specific child code such as Z91.120 for billing.
Z00-Z99 Factors influencing health status and contact with health services
What this means — in plain language
MedlinePlus · NIHMedicines treat infectious diseases, prevent problems from chronic diseases, and ease pain. But medicines can also cause harmful reactions if not used correctly. Errors can happen in the hospital, at the health care provider's office, at the pharmacy, or at home. You can help prevent errors by: Knowing your medicines. When you get a prescription, ask the name of the medicine and check to make sure that the pharmacy…
Read more about Medication Errors at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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