Z91.09

Z91.09: Other allergy status, other than to drugs and biological substances

Billable / specific codeICD-10-CMPOA exempt

Z91.09 is a billable, specific ICD-10-CM code for other allergy status, other than to drugs and biological substances. It is valid for submission on a claim.

Check Z91.09 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above Z91.09

Not part of this code, but both may be coded when both are present.

Written on Z91.0: Allergy status, other than to drugs and biological substances

Allergy status to drugs, medicaments, and biological substances (Z88.-)

Written on Z91: Personal risk factors, not elsewhere classified

contact with and (suspected) exposures hazardous to health (Z77.-)
exposure to pollution and other problems related to physical environment (Z77.1-)
female genital mutilation status (N90.81-)
occupational exposure to risk factors (Z57.-)
personal history of physical injury and trauma (Z87.81, Z87.82-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

Z91.09 is named in 12 Medicare coverage policies: 12 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56844Billing and Coding: RAST Type Tests
A57043Billing and Coding: RAST Type Tests
A60360Billing and Coding: Allergy Diagnostic Testing
A60361Billing and Coding: Allergy Diagnostic Testing

Alphabetic index entries that lead here

History›personal›allergy›specified NEC

Code history

Unchanged in every release from FY2024 to FY2027.