Personal risk factors, not elsewhere classified (Z91)

Browse all the diagnosis codes used for personal risk factors, not elsewhere classified (z91). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Clinical Information

Hemosiderosis - Conditions in which there is a generalized increase in the iron stores of body tissues, particularly of liver and the MONONUCLEAR PHAGOCYTE SYSTEM, without demonstrable tissue damage. The name refers to the presence of stainable iron in the tissue in the form of hemosiderin.

Hypoxanthine Phosphoribosyltransferase - An enzyme that catalyzes the conversion of 5-phosphoribosyl-1-pyrophosphate and hypoxanthine, guanine, or MERCAPTOPURINE to the corresponding 5'-mononucleotides and pyrophosphate. The enzyme is important in purine biosynthesis as well as central nervous system functions. Complete lack of enzyme activity is associated with the LESCH-NYHAN SYNDROME, while partial deficiency results in overproduction of uric acid. EC 2.4.2.8.

Lesch-Nyhan Syndrome - An inherited disorder transmitted as a sex-linked trait and caused by a deficiency of an enzyme of purine metabolism; HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE. Affected individuals are normal in the first year of life and then develop psychomotor retardation, extrapyramidal movement disorders, progressive spasticity, and seizures. Self-destructive behaviors such as biting of fingers and lips are seen frequently. Intellectual impairment may also occur but is typically not severe. Elevation of uric acid in the serum leads to the development of renal calculi and gouty arthritis. (Menkes, Textbook of Child Neurology, 5th ed, pp127)

Mononuclear Phagocyte System - Mononuclear cells with pronounced phagocytic ability that are distributed extensively in lymphoid and other organs. It includes MACROPHAGES and their precursors; PHAGOCYTES; KUPFFER CELLS; HISTIOCYTES; DENDRITIC CELLS; LANGERHANS CELLS; and MICROGLIA. The term mononuclear phagocyte system has replaced the former reticuloendothelial system, which also included less active phagocytic cells such as fibroblasts and endothelial cells. (From Illustrated Dictionary of Immunology, 2d ed.)

Self Mutilation - The act of injuring one's own body to the extent of cutting off or permanently destroying a limb or other essential part of a body.

Instructional Notations

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

  • 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
  • Factors influencing health status and contact with health services (Z00–Z99)

    • Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

        • Personal risk factors, not elsewhere classified (Z91)

        • 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
        • Z91.041 Radiographic dye allergy status
        • Z91.048 Other nonmedicinal substance allergy status
        • Z91.09 Other allergy status, other than to drugs and biological substances
        • Z91.1 Patient's noncompliance with medical treatment and regimen
        • Z91.11 Patient's noncompliance with dietary regimen
        • Z91.110 Patient's noncompliance with dietary regimen due to financial hardship
        • Z91.118 Patient's noncompliance with dietary regimen for other reason
        • Z91.119 Patient's noncompliance with dietary regimen due to unspecified reason
        • Z91.12 Patient's intentional underdosing of medication regimen
        • Z91.120 Patient's intentional underdosing of medication regimen due to financial hardship
        • Z91.128 Patient's intentional underdosing of medication regimen for other reason
        • Z91.13 Patient's unintentional underdosing of medication regimen
        • Z91.130 Patient's unintentional underdosing of medication regimen due to age-related debility
        • Z91.138 Patient's unintentional underdosing of medication regimen for other reason
        • Z91.14 Patient's other noncompliance with medication regimen
        • Z91.141 Patient's other noncompliance with medication regimen due to financial hardship
        • Z91.148 Patient's other noncompliance with medication regimen for other reason
        • Z91.15 Patient's noncompliance with renal dialysis
        • Z91.151 Patient's noncompliance with renal dialysis due to financial hardship
        • Z91.158 Patient's noncompliance with renal dialysis for other reason
        • Z91.19 Patient's noncompliance with other medical treatment and regimen
        • Z91.190 Patient's noncompliance with other medical treatment and regimen due to financial hardship
        • Z91.198 Patient's noncompliance with other medical treatment and regimen for other reason
        • Z91.199 Patient's noncompliance with other medical treatment and regimen due to unspecified reason
        • Z91.4 Personal history of psychological trauma, not elsewhere classified
        • Z91.41 Personal history of adult abuse
        • Z91.410 Personal history of adult physical and sexual abuse
        • Z91.411 Personal history of adult psychological abuse
        • Z91.412 Personal history of adult neglect
        • Z91.413 Personal history of adult financial abuse
        • Z91.414 Personal history of adult intimate partner abuse
        • Z91.419 Personal history of unspecified adult abuse
        • Z91.42 Personal history of forced labor or sexual exploitation
        • Z91.49 Other personal history of psychological trauma, not elsewhere classified
        • Z91.5 Personal history of self-harm
        • Z91.51 Personal history of suicidal behavior
        • Z91.52 Personal history of nonsuicidal self-harm
        • Z91.8 Other specified personal risk factors, not elsewhere classified
        • Z91.81 History of falling
        • Z91.82 Personal history of military deployment
        • Z91.83 Wandering in diseases classified elsewhere
        • Z91.84 Oral health risk factors
        • Z91.841 Risk for dental caries, low
        • Z91.842 Risk for dental caries, moderate
        • Z91.843 Risk for dental caries, high
        • Z91.849 Unspecified risk for dental caries
        • Z91.85 Personal history of military service NEW CODE
        • Z91.89 Other specified personal risk factors, not elsewhere classified
        • Z91.A Caregiver's noncompliance with patient's medical treatment and regimen
        • Z91.A1 Caregiver's noncompliance with patient's dietary regimen
        • Z91.A10 Caregiver's noncompliance with patient's dietary regimen due to financial hardship
        • Z91.A18 Caregiver's noncompliance with patient's dietary regimen for other reason
        • Z91.A2 Caregiver's intentional underdosing of patient's medication regimen
        • Z91.A20 Caregiver's intentional underdosing of patient's medication regimen due to financial hardship
        • Z91.A28 Caregiver's intentional underdosing of medication regimen for other reason
        • Z91.A3 Caregiver's unintentional underdosing of patient's medication regimen
        • Z91.A4 Caregiver's other noncompliance with patient's medication regimen NEW CODE
        • Z91.A41 Caregiver's other noncompliance with patient's medication regimen due to financial hardship NEW CODE
        • Z91.A48 Caregiver's other noncompliance with patient's medication regimen for other reason NEW CODE
        • Z91.A5 Caregiver's noncompliance with patient's renal dialysis NEW CODE
        • Z91.A51 Caregiver's noncompliance with patient's renal dialysis due to financial hardship NEW CODE
        • Z91.A58 Caregiver's noncompliance with patient's renal dialysis for other reason NEW CODE
        • Z91.A9 Caregiver's noncompliance with patient's other medical treatment and regimen NEW CODE
        • Z91.A91 Caregiver's noncompliance with patient's other medical treatment and regimen due to financial hardship NEW CODE
        • Z91.A98 Caregiver's noncompliance with patient's other medical treatment and regimen for other reason NEW CODE