Z91

Personal risk factors, not elsewhere classified

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027

SourceCMS ICD-10-CM order file

ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODE	DESCRIPTION	TYPE
Z91.0	Allergy status, other than to drugs and biological substances	Category
Z91.01	Food allergy status	Category
Z91.010	Allergy to peanuts	Billable
Z91.011	Allergy to milk products	Category
Z91.0110	Allergy to milk products, unspecified	Billable
Z91.0111	Allergy to milk products with tolerance to baked milk	Billable
Z91.0112	Allergy to milk products with reactivity to baked milk	Billable
Z91.012	Allergy to eggs	Category
Z91.0120	Allergy to eggs, unspecified	Billable
Z91.0121	Allergy to eggs with tolerance to baked egg	Billable
Z91.0122	Allergy to eggs with reactivity to baked egg	Billable
Z91.013	Allergy to seafood	Billable
Z91.014	Allergy to mammalian meats	Billable
Z91.018	Allergy to other foods	Billable
Z91.02	Food additives allergy status	Billable
Z91.03	Insect allergy status	Category
Z91.030	Bee allergy status	Billable
Z91.038	Other insect allergy status	Billable
Z91.04	Nonmedicinal substance allergy status	Category
Z91.040	Latex allergy status	Billable
Z91.041	Radiographic dye allergy status	Billable
Z91.048	Other nonmedicinal substance allergy status	Billable
Z91.09	Other allergy status, other than to drugs and biological substances	Billable
Z91.1	Patient's noncompliance with medical treatment and regimen	Category
Z91.11	Patient's noncompliance with dietary regimen	Category
Z91.110	Patient's noncompliance with dietary regimen due to financial hardship	Billable
Z91.118	Patient's noncompliance with dietary regimen for other reason	Billable
Z91.119	Patient's noncompliance with dietary regimen due to unspecified reason	Billable
Z91.12	Patient's intentional underdosing of medication regimen	Category
Z91.120	Patient's intentional underdosing of medication regimen due to financial hardship	Billable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.