All ICD10 Codes

Z91.01

Non-Billable
ChapterZ00–Z99
Ranksubcategory
Official Description

Food allergy status

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Instructional Notes

Excludes2(Not included here)
  • food additives allergy status (Z91.02)
General instructions are available for the parent sections:
View Z77-Z99 NotesView Z91 NotesView Z91.0 Notes

Clinical Hierarchy

CH21Factors influencing health status and contact with health services (Z00-Z99)
Z77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Z91Personal risk factors, not elsewhere classified
Z91.0Allergy status, other than to drugs and biological substances
Z91.01Food allergy status
Z91.010Allergy to peanuts
Z91.011Allergy to milk products
Z91.012Allergy to eggs
Z91.013Allergy to seafood
Z91.014Allergy to mammalian meats
Z91.018Allergy to other foods

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Z91.01:

subcategoryZ91.0
Allergy status, other than to drugs and biological substances
View context instructions
categoryZ91
Personal risk factors, not elsewhere classified
View context instructions
blockZ77-Z99
Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Z91.01. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Allergy, allergic (reaction) (to)18 unique routes
food (any) (ingested) NEC(15 variants)
status (without reaction)→Z91.01(15 variants)
beef→Z91.01
eggs→Z91.01(3 variants)
with(2 variants)
reactivity to baked egg→Z91.01
tolerance to baked egg→Z91.01
lamb→Z91.01
mammalian meats→Z91.01
milk products→Z91.01(3 variants)
with(2 variants)
reactivity to baked milk→Z91.01
tolerance to baked milk→Z91.01
peanuts→Z91.01
pork→Z91.01
red meats→Z91.01
seafood→Z91.01
specified NEC→Z91.01
milk protein→Z91.01(3 variants)
with(2 variants)
reactivity to baked milk→Z91.01
tolerance to baked milk→Z91.01
History7 unique routes
personal (of)(7 variants)
allergy (to)(7 variants)
food→Z91.01(7 variants)
beef→Z91.01
eggs→Z91.01(3 variants)
with(2 variants)
reactivity to baked egg→Z91.01
tolerance to baked egg→Z91.01
lamb→Z91.01
mammalian meats→Z91.01

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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