ICD-10-CM · Billable Code
Z91.128 — Patient's intentl undrdose of meds regimen for oth reason
Patient's intentional underdosing of medication regimen for other reason
Chapter Z00-Z99: Factors influencing health status and contact with health services
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Common questions about Z91.128 (Patient's intentl undrdose of meds regimen for oth reason)
What does ICD-10 code Z91.128 mean?
Z91.128 is the ICD-10-CM 2025 code for Patient's intentl undrdose of meds regimen for oth reason. Patient's intentional underdosing of medication regimen for other reason. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is Z91.128 a billable diagnosis code?
Yes, Z91.128 is a billable / specific ICD-10-CM code, meaning it can be used by clinicians and hospitals as a primary or secondary diagnosis on claims and electronic health records.
Which ICD-10 chapter does Z91.128 belong to?
Z91.128 belongs to the chapter "Factors influencing health status and contact with health services" (codes Z00-Z99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Patient's intentl undrdose of meds regimen for oth reason?
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Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗