Z88
ICD-10Non-billable categoryAllergy status to drug/meds/biol subst
Official ICD-10-CM descriptor (FY2026)
Allergy status to drugs, medicaments and biological substances
Z88 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- Allergy status, other than to drugs and biological substances (Z91.0-)
More specific codes under Z88
- Z88.0Allergy status to penicillin
- Z88.1Allergy status to other antibiotic agents
- Z88.2Allergy status to sulfonamides
- Z88.3Allergy status to other anti-infective agents
- Z88.4Allergy status to anesthetic agent
- Z88.5Allergy status to narcotic agent
- Z88.6Allergy status to analgesic agent
- Z88.7Allergy status to serum and vaccine
- Z88.8Allergy status to other drug/meds/biol subst
- Z88.9Allergy status to unspecified drug/meds/biol subst
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.