2020 ICD-10-CM Diagnosis Code Z79.4

Long term (current) use of insulin

    2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
  • Z79.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM Z79.4 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Z79.4 - other international versions of ICD-10 Z79.4 may differ.
The following code(s) above Z79.4 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 Z79.4:
  • Z00-Z99
    2020 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
    2020 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
  • Z79
    ICD-10-CM Diagnosis Code Z79

    Long term (current) drug therapy

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code Also
    • any therapeutic drug level monitoring (Z51.81)
    Includes
    • long term (current) drug use for prophylactic purposes
    Type 2 Excludes
    • drug abuse and dependence (F11-F19)
    • drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)
    • long term (current) use of oral antidiabetic drugs (Z79.84)
    • long term (current) use of oral hypoglycemic drugs (Z79.84)
    Long term (current) drug therapy
Approximate Synonyms
  • Aftercare for long term current use of insulin done
  • Diabetes type 2 on insulin
  • Insulin treated type 2 diabetes mellitus
  • Insulin-treated non-insulin-dependent diabetes mellitus
  • Long term current use of insulin
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.
  • Z79.4 is considered exempt from POA reporting.
ICD-10-CM Z79.4 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 949 Aftercare with cc/mcc
  • 950 Aftercare without cc/mcc

Convert Z79.4 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
Code annotations containing back-references to Z79.4:
  • Type 2 Excludes: Z79.84
    ICD-10-CM Diagnosis Code Z79.84

    Long term (current) use of oral hypoglycemic drugs

      2017 - New Code 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Long term (current) use of oral antidiabetic drugs
    Type 2 Excludes
    • long term (current) use of insulin (Z79.4)
  • Use Additional: O24.1
    , O24.3
    , O24.8
    , O24.9
    , Z90.41
    , E08
    , E11
    , E13
    , E89.1
    ICD-10-CM Diagnosis Code O24.1

    Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium

      2016 2017 - Revised Code 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Insulin-resistant diabetes mellitus in pregnancy, childbirth and the puerperium
    Use Additional
    • code (for):
    • from category E11 to further identify any manifestations
    • long-term (current) use of insulin (Z79.4)
    ICD-10-CM Diagnosis Code O24.3

    Unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Use Additional
    • code (for):
    • from category E11 to further identify any manifestation
    • long-term (current) use of insulin (Z79.4)
    ICD-10-CM Diagnosis Code O24.8

    Other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Use Additional
    • code (for):
    • from categories E08, E09 and E13 to further identify any manifestation
    • long-term (current) use of insulin (Z79.4)
    ICD-10-CM Diagnosis Code O24.9

    Unspecified diabetes mellitus in pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Use Additional
    • code for long-term (current) use of insulin (Z79.4)
    ICD-10-CM Diagnosis Code Z90.41

    Acquired absence of pancreas

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code Also
    • exocrine pancreatic insufficiency (K86.81)
    Use Additional
    • code to identify any associated:
    • diabetes mellitus, postpancreatectomy (E13.-)
    • insulin use (Z79.4)
    ICD-10-CM Diagnosis Code E08

    Diabetes mellitus due to underlying condition

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code First
    • the underlying condition, such as:
    • congenital rubella (P35.0)
    • Cushing's syndrome (E24.-)
    • cystic fibrosis (E84.-)
    • malignant neoplasm (C00-C96)
    • malnutrition (E40-E46)
    • pancreatitis and other diseases of the pancreas (K85-K86.-)
    Type 1 Excludes
    • drug or chemical induced diabetes mellitus (E09.-)
    • gestational diabetes (O24.4-)
    • neonatal diabetes mellitus (P70.2)
    • postpancreatectomy diabetes mellitus (E13.-)
    • postprocedural diabetes mellitus (E13.-)
    • secondary diabetes mellitus NEC (E13.-)
    • type 1 diabetes mellitus (E10.-)
    • type 2 diabetes mellitus (E11.-)
    Use Additional
    • code to identify control using:
    • insulin (Z79.4)
    • oral antidiabetic drugs (Z79.84)
    • oral hypoglycemic drugs (Z79.84)
    ICD-10-CM Diagnosis Code E11

    Type 2 diabetes mellitus

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • diabetes (mellitus) due to insulin secretory defect
    • diabetes NOS
    • insulin resistant diabetes (mellitus)
    Type 1 Excludes
    • diabetes mellitus due to underlying condition (E08.-)
    • drug or chemical induced diabetes mellitus (E09.-)
    • gestational diabetes (O24.4-)
    • neonatal diabetes mellitus (P70.2)
    • postpancreatectomy diabetes mellitus (E13.-)
    • postprocedural diabetes mellitus (E13.-)
    • secondary diabetes mellitus NEC (E13.-)
    • type 1 diabetes mellitus (E10.-)
    Use Additional
    • code to identify control using:
    • insulin (Z79.4)
    • oral antidiabetic drugs (Z79.84)
    • oral hypoglycemic drugs (Z79.84)
    ICD-10-CM Diagnosis Code E13

    Other specified diabetes mellitus

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • diabetes mellitus due to genetic defects of beta-cell function
    • diabetes mellitus due to genetic defects in insulin action
    • postpancreatectomy diabetes mellitus
    • postprocedural diabetes mellitus
    • secondary diabetes mellitus NEC
    Type 1 Excludes
    • diabetes (mellitus) due to autoimmune process (E10.-)
    • diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction (E10.-)
    • diabetes mellitus due to underlying condition (E08.-)
    • drug or chemical induced diabetes mellitus (E09.-)
    • gestational diabetes (O24.4-)
    • neonatal diabetes mellitus (P70.2)
    • type 1 diabetes mellitus (E10.-)
    Use Additional
    • code to identify control using:
    • insulin (Z79.4)
    • oral antidiabetic drugs (Z79.84)
    • oral hypoglycemic drugs (Z79.84)
    ICD-10-CM Diagnosis Code E89.1

    Postprocedural hypoinsulinemia

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Postpancreatectomy hyperglycemia
    • Postsurgical hypoinsulinemia
    Type 1 Excludes
    • transient postprocedural hyperglycemia (R73.9)
    • transient postprocedural hypoglycemia (E16.2)
    Use Additional
    • code, if applicable, to identify:
    • acquired absence of pancreas (Z90.41-)
    • diabetes mellitus (postpancreatectomy) (postprocedural) (E13.-)
    • insulin use (Z79.4)

Diagnosis Index entries containing back-references to Z79.4:

ICD-10-CM Codes Adjacent To Z79.4
Z78.0 Asymptomatic menopausal state
Z78.1 Physical restraint status
Z78.9 Other specified health status
Z79 Long term (current) drug therapy
Z79.0 Long term (current) use of anticoagulants and antithrombotics/antiplatelets
Z79.01 Long term (current) use of anticoagulants
Z79.02 Long term (current) use of antithrombotics/antiplatelets
Z79.1 Long term (current) use of non-steroidal anti-inflammatories (NSAID)
Z79.2 Long term (current) use of antibiotics
Z79.3 Long term (current) use of hormonal contraceptives
Z79.4 Long term (current) use of insulin
Z79.5 Long term (current) use of steroids
Z79.51 Long term (current) use of inhaled steroids
Z79.52 Long term (current) use of systemic steroids
Z79.8 Other long term (current) drug therapy
Z79.81 Long term (current) use of agents affecting estrogen receptors and estrogen levels
Z79.810 Long term (current) use of selective estrogen receptor modulators (SERMs)
Z79.811 Long term (current) use of aromatase inhibitors
Z79.818 Long term (current) use of other agents affecting estrogen receptors and estrogen levels
Z79.82 Long term (current) use of aspirin
Z79.83 Long term (current) use of bisphosphonates

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