ICDcodes.org
FY2027

Z91.0 — Allergy status, other than to drugs and biological substances

Not billable

Is Z91.0 billable?

No — Z91.0 is a non-billable header code. Z91.0 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 17 billable codes beneath Z91.0.

Z91.0 at a glance

CodeZ91.0
DescriptionAllergy status, other than to drugs and biological substances
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Excludes2 — not included here

The conditions below are not part of Z91.0, but a patient may have both at the same time. When documentation supports it, Z91.0 and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from Z91

The conditions below are not part of Z91.0, but a patient may have both at the same time. When documentation supports it, Z91.0 and the excluded code may both be reported.

  • 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-)

Code also — inherited from Z77-Z99

Two codes may be needed to describe the condition fully. Whether Z91.0 is sequenced first depends on the reason for the encounter.

  • any follow-up examination (Z08-Z09)

What codes fall under Z91.0? (5)

How long has Z91.0 existed?

Z91.0 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the Z91 family? (6)