Billable / Specific Code
ICD-10-CM O24.420 is the diagnosis code for Gestational diabetes mellitus in childbirth, diet controlled. This code falls under the section "Other maternal disorders predominantly related to pregnancy" within Chapter 15 — Pregnancy, childbirth and the puerperium (O00-O9A). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where O24.420 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, O24.420 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
O24.420 is the ICD-10-CM diagnosis code for "Gestational diabetes mellitus in childbirth, diet controlled". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of O24.420 is O24.42 ("Gestational diabetes mellitus in childbirth"). O24.420 provides a more specific classification within this category.
O24.420 is located in Section O20-O29 — "Other maternal disorders predominantly related to pregnancy" within Chapter 15 of the ICD-10-CM Tabular List.
Use O24.420 when the patients documented diagnosis matches "Gestational diabetes mellitus in childbirth, diet controlled" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Gestational diabetes mellitus in childbirth, diet controlled is O24.420.
Yes, O24.420 can be used as a primary diagnosis code since it is billable and specific.
O24.420 is in Chapter 15 of the ICD-10-CM Tabular List.
Yes, O24.420 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.