ICD-10 Diagnosis Code Z91.09

Oth allergy status, oth than to drugs and biolg substances

Diagnosis Code Z91.09

ICD-10: Z91.09
Short Description: Oth allergy status, oth than to drugs and biolg substances
Long Description: Other allergy status, other than to drugs and biological substances
This is the 2018 version of the ICD-10-CM diagnosis code Z91.09

Valid for Submission
The code Z91.09 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Factors influencing health status and contact with health services (Z00–Z99)
    • Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
      • Personal risk factors, not elsewhere classified (Z91)

Information for Medical Professionals

Code Edits
The following edits are applicable to this code:
Unacceptable principal diagnosis Additional informationCallout TooltipUnacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual’s health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Present on Admission (POA) Additional informationCallout TooltipPresent on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

The code Z91.09 is exempt from POA reporting.

  • Allergy to aluminum
  • Allergy to animal dander
  • Allergy to biocide
  • Allergy to cosmetic
  • Allergy to cow dander
  • Allergy to Dermatophagoides farinae
  • Allergy to Dermatophagoides pteronyssinus
  • Allergy to dye
  • Allergy to fungus
  • Allergy to fungus
  • Allergy to guinea pig dander
  • Allergy to horse dander
  • Allergy to lichen
  • Allergy to plant
  • Allergy to plant fiber
  • Allergy to rubber
  • Allergy to rust
  • Allergy to tree resin
  • Allergy to wood
  • Allergy to wool
  • Allergy to yeast
  • Base allergy
  • Dimethicone allergy
  • Feather allergy
  • History of non-drug allergy
  • House dust mite allergy
  • House dust mite allergy
  • Laboratory animal dander allergy
  • Liquid paraffin allergy
  • Metal allergy
  • Paraffin allergy
  • Paraffin-white soft allergy
  • Paraffin-yellow soft allergy
  • Perfume allergy
  • Silicone allergy
  • Sulfur allergy
  • Terpenes allergy
  • Wool alcohol allergy

Information for Patients


Also called: Hypersensitivity

An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are

  • Pollen
  • Dust mites
  • Mold spores
  • Pet dander
  • Food
  • Insect stings
  • Medicines

Normally, your immune system fights germs. It is your body's defense system. In most allergic reactions, however, it is responding to a false alarm. Genes and the environment probably both play a role.

Allergies can cause a variety of symptoms such as a runny nose, sneezing, itching, rashes, swelling, or asthma. Allergies can range from minor to severe. Anaphylaxis is a severe reaction that can be life-threatening. Doctors use skin and blood tests to diagnose allergies. Treatments include medicines, allergy shots, and avoiding the substances that cause the reactions.

NIH: National Institute of Allergy and Infectious Diseases

  • Allergic reactions (Medical Encyclopedia)
  • Allergic rhinitis - self-care (Medical Encyclopedia)
  • Allergies (Medical Encyclopedia)
  • Allergies, asthma, and dust (Medical Encyclopedia)
  • Allergies, asthma, and molds (Medical Encyclopedia)
  • Allergy testing - skin (Medical Encyclopedia)
  • Angioedema (Medical Encyclopedia)
  • Antihistamines for allergies (Medical Encyclopedia)

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