Z91.0

Allergy status, other than to drugs and biological substances

Non-billable header

Z91.0 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes (from Z91)

  • Note: Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • Note: (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • Note: (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Excludes2

Not included here — may be reported together when both conditions exist.

  • Allergy status to drugs, medicaments, and biological substances (Z88.-)
  • contact with and (suspected) exposures hazardous to health (Z77.-) (from Z91)
  • exposure to pollution and other problems related to physical environment (Z77.1-) (from Z91)
  • female genital mutilation status (N90.81-) (from Z91)
  • occupational exposure to risk factors (Z57.-) (from Z91)
  • personal history of physical injury and trauma (Z87.81, Z87.82-) (from Z91)

Code also

An additional code may be needed.

  • any follow-up examination (Z08-Z09) (from Z91)

Parent code

  • Z91Personal risk factors, not elsewhere classifiedHeader

More specific codes Z91.0

  • Z91.01Food allergy statusHeader
  • Z91.02Food additives allergy statusBillable
  • Z91.03Insect allergy statusHeader
  • Z91.04Nonmedicinal substance allergy statusHeader
  • Z91.09Other allergy status, other than to drugs and biological substancesBillable

Related codes

  • Z91.1Patient's noncompliance with medical treatment and regimenHeader
  • Z91.ACaregiver's noncompliance with patient's medical treatment and regimenHeader
  • Z91.4Personal history of psychological trauma, not elsewhere classifiedHeader
  • Z91.5Personal history of self-harmHeader
  • Z91.8Other specified personal risk factors, not elsewhere classifiedHeader
  • Z91.BPersonal risk factor of exposure to diethylstilbestrolBillable

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