Z91.1 (Patient's noncompliance with medical treatment and regimen) is an umbrella ICD-10-CM medical diagnosis code in the Factors influencing health status and contact with health services chapter. It identifies cases of patient's noncompliance with medical treatment and regimen for clinical documentation, billing and

ICD-10-CM · Category

Z91.1 — Patient's noncompliance with medical treatment and regimen

Chapter Z00-Z99: Factors influencing health status and contact with health services

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Sub-codes under Z91.1

Z91.11Patient's noncompliance with dietary regimenZ91.12Patient's intentional underdosing of medication regimenZ91.13Patient's unintentional underdosing of medication regimenZ91.14Patient's other noncompliance with medication regimenZ91.15Patient's noncompliance with renal dialysisZ91.19Patient's noncompliance w oth medical treatment and regimen

Related diagnoses

Z91.0Allergy status, oth than to drugs and biological substancesZ91.ACarers noncompl with patient's medical treatment and regimenZ91.4Personal history of psychological trauma, NECZ91.5Personal history of self-harmZ91.8Oth personal risk factors, not elsewhere classified

Common questions about Z91.1 (Patient's noncompliance with medical treatment and regimen)

What does ICD-10 code Z91.1 mean?
Z91.1 is the ICD-10-CM 2025 code for Patient's noncompliance with medical treatment and regimen. 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 Z91.1 a billable diagnosis code?
Z91.1 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under Z91.1. Browse the sub-codes listed on this page.
Which ICD-10 chapter does Z91.1 belong to?
Z91.1 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 noncompliance with medical treatment and regimen?
For a plain-language explanation of Patient's noncompliance with medical treatment and regimen, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Patient's noncompliance with medical treatment and regimen" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗