ICD-10-CM Codes
Z00-Z99
Z77-Z99
Z91-
2023 ICD-10-CM Diagnosis Code Z91.011

2023 ICD-10-CM Diagnosis Code Z91.011

Allergy to milk products

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

POA Exempt

Z91.011 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM Z91.011 became effective on October 1, 2022.
This is the American ICD-10-CM version of Z91.011 - other international versions of ICD-10 Z91.011 may differ.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Z91.011. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

lactose intolerance (
ICD-10-CM Diagnosis Code E73
- E73 Lactose intolerance
  - E73.0 Congenital lactase deficiency
  - E73.1 Secondary lactase deficiency
  - E73.8 Other lactose intolerance
  - E73.9 Lactose intolerance, unspecified
E73.-
)

The following code(s) above Z91.011 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to Z91.011:

Z00-Z99
2023 ICD-10-CM Range Z00-Z99
Factors influencing health status and contact with health services
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:
- (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.
- (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.
Factors influencing health status and contact with health services
Z77-Z99
2023 ICD-10-CM Range Z77-Z99
Persons with potential health hazards related to family and personal history and certain conditions influencing health status
Code Also
- any follow-up examination (Z08-Z09)
Persons with potential health hazards related to family and personal history and certain conditions influencing health status
Z91
ICD-10-CM Diagnosis Code Z91
Personal risk factors, not elsewhere classified
Type 2 Excludes
- 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-)
Personal risk factors, not elsewhere classified
Z91.0
ICD-10-CM Diagnosis Code Z91.0
Allergy status, other than to drugs and biological substances
Type 2 Excludes
- Allergy status to drugs, medicaments, and biological substances (Z88.-)
Allergy status, other than to drugs and biological substances
Z91.01
ICD-10-CM Diagnosis Code Z91.01
Food allergy status
Type 2 Excludes
- food additives allergy status (Z91.02)
Food allergy status

Approximate Synonyms

Allergy to dairy product
History of cow's milk protein sensitivity
History of sensitivity to cow milk protein
Milk product allergy

Present On Admission

POA Help

"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.

Z91.011 is considered exempt from POA reporting.

ICD-10-CM Z91.011 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

951 Other factors influencing health status

Convert Z91.011 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to Z91.011:

Allergy, allergic (reaction) (to) T78.40
ICD-10-CM Diagnosis Code T78.40
Allergy, unspecified
Applicable To
Allergic reaction NOS
Hypersensitivity NOS
- food (any) (ingested) T78.1
  ICD-10-CM Diagnosis Code T78.1
  Other adverse food reactions, not elsewhere classified
  2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  Type 1 Excludes
  anaphylactic reaction or shock due to adverse food reaction (T78.0-)
  anaphylactic reaction due to food (T78.0-)
  bacterial food borne intoxications (A05.-)
  Type 2 Excludes
  allergic and dietetic gastroenteritis and colitis (K52.29)
  allergic rhinitis due to food (J30.5)
  dermatitis due to food in contact with skin (L23.6, L24.6, L25.4)
  dermatitis due to ingested food (L27.2)
  food protein-induced enterocolitis syndrome (K52.21)
  food protein-induced enteropathy (K52.22)
  Use Additional
  code to identify the type of reaction, if applicable
  - status (without reaction) Z91.018
    ICD-10-CM Diagnosis Code Z91.018
    Allergy to other foods
    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
    Applicable To
    Allergy to nuts other than peanuts
    - milk products Z91.011
- milk protein Z91.011 - see also Allergy, food
History
- personal (of) - see also History, family (of)
  - allergy (to) Z88.9
    ICD-10-CM Diagnosis Code Z88.9
    Allergy status to unspecified drugs, medicaments and biological substances
    2016 2017 2018 2019 2020 2021 - Revised Code 2022 2023 Billable/Specific Code POA Exempt
    - food Z91.018
      ICD-10-CM Diagnosis Code Z91.018
      Allergy to other foods
      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
      Applicable To
      Allergy to nuts other than peanuts
      - milk products Z91.011

ICD-10-CM Codes Adjacent To Z91.011

Z90.721 …… unilateral

Z90.722 …… bilateral

Z90.79 Acquired absence of other genital organ(s)

Z90.8 Acquired absence of other organs

Z90.81 Acquired absence of spleen

Z90.89 Acquired absence of other organs

Z91 Personal risk factors, not elsewhere classified

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

Z91.01 Food allergy status

Z91.010 Allergy to peanuts

Z91.011 Allergy to milk products

Z91.012 Allergy to eggs

Z91.013 Allergy to seafood

Z91.014 Allergy to mammalian meats

Z91.018 Allergy to other foods

Z91.02 Food additives allergy status

Z91.03 Insect allergy status

Z91.030 Bee allergy status

Z91.038 Other insect allergy status

Z91.04 Nonmedicinal substance allergy status

Z91.040 Latex allergy status

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code Z91.011

Allergy to milk products

Factors influencing health status and contact with health services

Persons with potential health hazards related to family and personal history and certain conditions influencing health status

Personal risk factors, not elsewhere classified

Allergy status, other than to drugs and biological substances

Food allergy status

Allergy, unspecified

Other adverse food reactions, not elsewhere classified

Allergy to other foods

Allergy status to unspecified drugs, medicaments and biological substances

Allergy to other foods