Z91.013

Billable

ChapterZ00–Z99

Ranksubcategory

Official Description

Allergy to seafood

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Instructional Notes

Includes

Allergy to shellfish
Allergy to octopus or squid ink

General instructions are available for the parent sections:

View Z77-Z99 Notes View Z91 Notes View Z91.0 Notes View Z91.01 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

Z91.013Allergy to seafood

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Z91.013:

subcategoryZ91.01

Food allergy status

View context instructions

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 Z91.013. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

2 raw paths

Allergy, allergic (reaction) (to)1 unique routes

food (any) (ingested) NEC

status (without reaction)

seafood→Z91.013

History1 unique routes