Z91.118 Patient's noncompliance with dietary regimen for other reason

The ICD-10-CM code for Patient's noncompliance with dietary regimen for other reason is Z91.118 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

21: Factors influencing health status and contact with health services (Z00-Z99)

Section

Z77-Z99: Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

Category Z91

87 codes (62 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Z91.118:

• Inability to › comply with dietary regimen
• Noncompliance › with › dietary regimen › due to › specified reason NEC

Inclusion Terms

• Inability to comply with dietary regimen

U.S. Hospital Utilization

• An estimated 3,285 U.S. inpatient stays in 2023 included Z91.118 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Unlabeled Z code list + cross-reference to I.B.14

Z76.3 Healthy person accompanying sick person Z76.4 Other boarder to healthcare facility Z76.5 Malingerer [conscious simulation] Z91.1- Patient’s noncompliance with medical treatment and regimen Z91.A- Caregiver’s noncompliance with patient’s medical treatment and regimen Z91.B Personal risk factor of exposure to diethylstilbestrol Z91.83 Wandering in diseases classified elsewhere Z91.84- Oral health risk factors Z91.89 Other specified personal risk factors, not elsewhere classified See Section I.B.14. for Z55-Z65 Persons with potential health hazards related to socioeconomic and psychosocial circumstances, documentation by clinicians other than the patient’s provider

Used with any code in range A00.0-T88.9, Z00-Z99

1) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference Z91.118 with the canonical source and edition:

Z91.118 — Patient's noncompliance with dietary regimen for other reason. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/Z91.118

Canonical URL: https://icd10codingpro.com/codes/Z91.118