1. ICD-10-CM Codes
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2. O00-O9A Pregnancy, childbirth and the puerperium
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3. O20-O29 Other maternal disorders predominantly related to pregnancy
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4. O24- Diabetes mellitus in pregnancy, childbirth, and the puerperium
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5. 2021 ICD-10-CM Diagnosis Code O24.4

2021 ICD-10-CM Diagnosis Code O24.4

Gestational diabetes mellitus

2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

• O24.4 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
• The 2021 edition of ICD-10-CM O24.4 became effective on October 1, 2020.
• This is the American ICD-10-CM version of O24.4 - other international versions of ICD-10 O24.4 may differ.

• diabetes is a disease in which your blood glucose, or sugar, levels are too high. When you are pregnant, too much glucose is not good for your baby. Out of every 100 pregnant women in the United States, between three and eight get gestational diabetes. Gestational diabetes is diabetes that happens for the first time when a woman is pregnant. Gestational diabetes goes away when you have your baby, but it does increase your risk for having diabetes later. If you already have diabetes before you get pregnant, you need to monitor and control your blood sugar levels.either type of diabetes during pregnancy raises the risk of problems for the baby and the mother. To help reduce these risks, you should follow your meal plan, exercise, test your blood sugar and take your medicine.
• Diabetes mellitus induced by pregnancy but resolved at the end of pregnancy. It does not include previously diagnosed diabetics who become pregnant (pregnancy in diabetics). Gestational diabetes usually develops in late pregnancy when insulin antagonistic hormones peaks leading to insulin resistance; glucose intolerance; and hyperglycemia.
• Diabetes that develops during pregnancy. It usually resolves after delivery.
• Glucose intolerance which onsets during pregnancy; does not include diabetics who become pregnant or women who become lactosuric; after pregnancy, the woman is reclassified as diabetic or not depending on whether glucose intolerance persists.

• 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

• Type 1 Excludes: O99.81
  , E08
  , E09
  , E10
  , E11
  , E13
  , Z86.32
  , R73.0
  ICD-10-CM Diagnosis Code O99.81

  Abnormal glucose complicating pregnancy, childbirth and the puerperium

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Type 1 Excludes

  • gestational diabetes (O24.4-)
  ICD-10-CM Diagnosis Code E08

  Diabetes mellitus due to underlying condition

  2016 2017 2018 2019 2020 2021 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 E09

  Drug or chemical induced diabetes mellitus

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Code First

  • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4 or 6)

  Type 1 Excludes

  • diabetes mellitus due to underlying condition (E08.-)
  • 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 for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  ICD-10-CM Diagnosis Code E10

  Type 1 diabetes mellitus

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Includes

  • brittle diabetes (mellitus)
  • diabetes (mellitus) due to autoimmune process
  • diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction
  • idiopathic diabetes (mellitus)
  • juvenile onset diabetes (mellitus)
  • ketosis-prone diabetes (mellitus)

  Type 1 Excludes

  • diabetes mellitus due to underlying condition (E08.-)
  • drug or chemical induced diabetes mellitus (E09.-)
  • gestational diabetes (O24.4-)
  • hyperglycemia NOS (R73.9)
  • neonatal diabetes mellitus (P70.2)
  • postpancreatectomy diabetes mellitus (E13.-)
  • postprocedural diabetes mellitus (E13.-)
  • secondary diabetes mellitus NEC (E13.-)
  • type 2 diabetes mellitus (E11.-)
  ICD-10-CM Diagnosis Code E11

  Type 2 diabetes mellitus

  2016 2017 2018 2019 2020 2021 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 2021 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 Z86.32

  Personal history of gestational diabetes

  2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt

  Applicable To

  • Personal history of conditions classifiable to O24.4-

  Type 1 Excludes

  • gestational diabetes mellitus in current pregnancy (O24.4-)
  ICD-10-CM Diagnosis Code R73.0

  Abnormal glucose

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Type 1 Excludes

  • abnormal glucose in pregnancy (O99.81-)
  • diabetes mellitus (E08-E13)
  • dysmetabolic syndrome X (E88.81)
  • gestational diabetes (O24.4-)
  • glycosuria (R81)
  • hypoglycemia (E16.2)
• Applicable To: Z86.32
  ICD-10-CM Diagnosis Code Z86.32

  Personal history of gestational diabetes

  2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt

  Applicable To

  • Personal history of conditions classifiable to O24.4-

  Type 1 Excludes

  • gestational diabetes mellitus in current pregnancy (O24.4-)

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