Billable / Specific Code
ICD-10-CM O30.033 is the diagnosis code for Twin pregnancy, monochorionic/diamniotic, third trimester. This code falls under the section "Maternal care related to the fetus and amniotic cavity and possible delivery problems" 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 O30.033 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, O30.033 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
O30.033 is the ICD-10-CM diagnosis code for "Twin pregnancy, monochorionic/diamniotic, third trimester". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of O30.033 is O30.03 ("Twin pregnancy, monochorionic/diamniotic"). O30.033 provides a more specific classification within this category.
O30.033 is located in Section O30-O48 — "Maternal care related to the fetus and amniotic cavity and possible delivery problems" within Chapter 15 of the ICD-10-CM Tabular List.
Use O30.033 when the patients documented diagnosis matches "Twin pregnancy, monochorionic/diamniotic, third trimester" 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 Twin pregnancy, monochorionic/diamniotic, third trimester is O30.033.
Yes, O30.033 can be used as a primary diagnosis code since it is billable and specific.
O30.033 is in Chapter 15 of the ICD-10-CM Tabular List.
Yes, O30.033 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.