| Z91 | Personal risk factors, not elsewhere classified | NON-BILLABLE CODE |
| Z91.0 | Allergy status, other than to drugs and biological substances | NON-BILLABLE CODE |
| Z91.01 | Food allergy status | NON-BILLABLE CODE |
| Z91.010 | Allergy to peanuts | BILLABLE CODE |
| Z91.011 | Allergy to milk products | BILLABLE CODE |
| Z91.012 | Allergy to eggs | BILLABLE CODE |
| Z91.013 | Allergy to seafood | BILLABLE CODE |
| Z91.014 | Allergy to mammalian meats | BILLABLE CODE |
| Z91.018 | Allergy to other foods | BILLABLE CODE |
| Z91.02 | Food additives allergy status | BILLABLE CODE |
| Z91.03 | Insect allergy status | NON-BILLABLE CODE |
| Z91.030 | Bee allergy status | BILLABLE CODE |
| Z91.04 | Nonmedicinal substance allergy status | NON-BILLABLE CODE |
| Z91.040 | Latex allergy status | BILLABLE CODE |
| Z91.041 | Radiographic dye allergy status | BILLABLE CODE |
| Z91.048 | Other nonmedicinal substance allergy status | BILLABLE CODE |
| Z91.09 | Other allergy status, other than to drugs and biological substances | BILLABLE CODE |
| Z91.1 | Patient's noncompliance with medical treatment and regimen | NON-BILLABLE CODE |
| Z91.11 | Patient's noncompliance with dietary regimen | NON-BILLABLE CODE |
| Z91.110 | Patient's noncompliance with dietary regimen due to financial hardship | BILLABLE CODE |
| Z91.118 | Patient's noncompliance with dietary regimen for other reason | BILLABLE CODE |
| Z91.119 | Patient's noncompliance with dietary regimen due to unspecified reason | BILLABLE CODE |
| Z91.12 | Patient's intentional underdosing of medication regimen | NON-BILLABLE CODE |
| Z91.120 | Patient's intentional underdosing of medication regimen due to financial hardship | BILLABLE CODE |
| Z91.128 | Patient's intentional underdosing of medication regimen for other reason | BILLABLE CODE |
| Z91.13 | Patient's unintentional underdosing of medication regimen | NON-BILLABLE CODE |
| Z91.130 | Patient's unintentional underdosing of medication regimen due to age-related debility | BILLABLE CODE |
| Z91.138 | Patient's unintentional underdosing of medication regimen for other reason | BILLABLE CODE |
| Z91.14 | Patient's other noncompliance with medication regimen | NON-BILLABLE CODE |
| Z91.141 | Patient's other noncompliance with medication regimen due to financial hardship | BILLABLE CODE |
| Z91.148 | Patient's other noncompliance with medication regimen for other reason | BILLABLE CODE |
| Z91.15 | Patient's noncompliance with renal dialysis | NON-BILLABLE CODE |
| Z91.151 | Patient's noncompliance with renal dialysis due to financial hardship | BILLABLE CODE |
| Z91.158 | Patient's noncompliance with renal dialysis for other reason | BILLABLE CODE |
| Z91.19 | Patient's noncompliance with other medical treatment and regimen | NON-BILLABLE CODE |
| Z91.190 | Patient's noncompliance with other medical treatment and regimen due to financial hardship | BILLABLE CODE |
| Z91.198 | Patient's noncompliance with other medical treatment and regimen for other reason | BILLABLE CODE |
| Z91.199 | Patient's noncompliance with other medical treatment and regimen due to unspecified reason | BILLABLE CODE |
| Z91.4 | Personal history of psychological trauma, not elsewhere classified | NON-BILLABLE CODE |
| Z91.41 | Personal history of adult abuse | NON-BILLABLE CODE |
| Z91.410 | Personal history of adult physical and sexual abuse | BILLABLE CODE |
| Z91.411 | Personal history of adult psychological abuse | BILLABLE CODE |
| Z91.412 | Personal history of adult neglect | BILLABLE CODE |
| Z91.413 | Personal history of adult financial abuse | BILLABLE CODE |
| Z91.414 | Personal history of adult intimate partner abuse | BILLABLE CODE |
| Z91.419 | Personal history of unspecified adult abuse | BILLABLE CODE |
| Z91.42 | Personal history of forced labor or sexual exploitation | BILLABLE CODE |
| Z91.49 | Other personal history of psychological trauma, not elsewhere classified | BILLABLE CODE |
| Z91.5 | Personal history of self-harm | NON-BILLABLE CODE |
| Z91.51 | Personal history of suicidal behavior | BILLABLE CODE |
| Z91.52 | Personal history of nonsuicidal self-harm | BILLABLE CODE |
| Z91.8 | Other specified personal risk factors, not elsewhere classified | NON-BILLABLE CODE |
| Z91.81 | History of falling | BILLABLE CODE |
| Z91.82 | Personal history of military deployment | BILLABLE CODE |
| Z91.83 | Wandering in diseases classified elsewhere | BILLABLE CODE |
| Z91.84 | Oral health risk factors | NON-BILLABLE CODE |
| Z91.841 | Risk for dental caries, low | BILLABLE CODE |
| Z91.842 | Risk for dental caries, moderate | BILLABLE CODE |
| Z91.843 | Risk for dental caries, high | BILLABLE CODE |
| Z91.849 | Unspecified risk for dental caries | BILLABLE CODE |
| Z91.85 | Personal history of military service | BILLABLE CODE |
| Z91.89 | Other specified personal risk factors, not elsewhere classified | BILLABLE CODE |
| Z91.A | Caregiver's noncompliance with patient's medical treatment and regimen | NON-BILLABLE CODE |
| Z91.A1 | Caregiver's noncompliance with patient's dietary regimen | NON-BILLABLE CODE |
| Z91.A10 | Caregiver's noncompliance with patient's dietary regimen due to financial hardship | BILLABLE CODE |
| Z91.A18 | Caregiver's noncompliance with patient's dietary regimen for other reason | BILLABLE CODE |
| Z91.A2 | Caregiver's intentional underdosing of patient's medication regimen | NON-BILLABLE CODE |
| Z91.A20 | Caregiver's intentional underdosing of patient's medication regimen due to financial hardship | BILLABLE CODE |
| Z91.A28 | Caregiver's intentional underdosing of medication regimen for other reason | BILLABLE CODE |
| Z91.A3 | Caregiver's unintentional underdosing of patient's medication regimen | BILLABLE CODE |
| Z91.A4 | Caregiver's other noncompliance with patient's medication regimen | NON-BILLABLE CODE |
| Z91.A41 | Caregiver's other noncompliance with patient's medication regimen due to financial hardship | BILLABLE CODE |
| Z91.A48 | Caregiver's other noncompliance with patient's medication regimen for other reason | BILLABLE CODE |
| Z91.A5 | Caregiver's noncompliance with patient's renal dialysis | NON-BILLABLE CODE |
| Z91.A51 | Caregiver's noncompliance with patient's renal dialysis due to financial hardship | BILLABLE CODE |
| Z91.A58 | Caregiver's noncompliance with patient's renal dialysis for other reason | BILLABLE CODE |
| Z91.A9 | Caregiver's noncompliance with patient's other medical treatment and regimen | NON-BILLABLE CODE |
| Z91.A91 | Caregiver's noncompliance with patient's other medical treatment and regimen due to financial hardship | BILLABLE CODE |
| Z91.A98 | Caregiver's noncompliance with patient's other medical treatment and regimen for other reason | BILLABLE CODE |
