2024 ICD-10-CM Diagnosis Code Z91.09
Other allergy status, other than to drugs and biological substances
- ICD-10-CM Code:
- Z91.09
- ICD-10 Code for:
- Oth allergy status, oth than to drugs and biolg substances
- Is Billable?
- Yes - Valid for Submission
- Code Navigator:
Z91.09 is a billable diagnosis code used to specify a medical diagnosis of other allergy status, other than to drugs and biological substances. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.
This code describes a circumstance which influences the patient's health status but not a current illness or injury. The code is unacceptable as a principal diagnosis.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Allergy to aluminum
- Allergy to animal protein
- Allergy to bird protein
- Allergy to cattle protein
- Allergy to citric acid
- Allergy to Dermatophagoides farinae protein
- Allergy to Dermatophagoides pteronyssinus protein
- Allergy to dimethicone
- Allergy to domestic cat protein
- Allergy to domestic dog protein
- Allergy to domestic Guinea pig protein
- Allergy to dust
- Allergy to dust mite protein
- Allergy to dust mite protein
- Allergy to fungus
- Allergy to horse protein
- Allergy to metal and/or metal compound
- Allergy to mineral oil
- Allergy to mugwort pollen
- Allergy to paraffin
- Allergy to plant fiber
- Allergy to pollen
- Allergy to pollen
- Allergy to pyrethroid
- Allergy to rubber
- Allergy to rust protein
- Allergy to silicone
- Allergy to terpene
- Allergy to tree resin
- Allergy to wall pellitory pollen
- Allergy to weed pollen
- Allergy to white paraffin
- Allergy to wood dust
- Allergy to wool
- Allergy to wool alcohol
- Allergy to yellow paraffin
- Diffuse dermatitis
- H/O: non-drug allergy
- Severe dermatitis, multiple allergies, metabolic wasting syndrome
Clinical Classification
Clinical Category is Other specified status
- CCSR Category Code: FAC025
- Inpatient Default CCSR: X - Not applicable.
- Outpatient Default CCSR: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Index to Diseases and Injuries References
The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).
- - History
- - personal (of) - See Also: History, family (of);
- - allergy (to) - Z88.9
- - specified NEC - Z91.09
- - allergy (to) - Z88.9
- - personal (of) - See Also: History, family (of);
Code Edits
The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:
- Unacceptable 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.
Present on Admission (POA)
Z91.09 is exempt from POA reporting - 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. Review other POA exempt codes here.
CMS POA Indicator Options and Definitions
| POA Indicator | Reason for Code | CMS will pay the CC/MCC DRG? |
|---|---|---|
| Y | Diagnosis was present at time of inpatient admission. | YES |
| N | Diagnosis was not present at time of inpatient admission. | NO |
| U | Documentation insufficient to determine if the condition was present at the time of inpatient admission. | NO |
| W | Clinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission. | YES |
| 1 | Unreported/Not used - Exempt from POA reporting. | NO |
Convert Z91.09 to ICD-9-CM
- ICD-9-CM Code: V15.09 - Hx-allergy NEC
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
Patient Education
Allergy
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.
[Learn More in MedlinePlus]
Code History
- FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
- FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
- FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
- FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
- FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
- FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
- FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
- FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
- FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.