O09.33
Billable codeSupervision of pregnancy with insufficient antenatal care, third trimester
The ICD-10 code for supervision of pregnancy with insufficient antenatal care, third trimester is O09.33.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- O09.30Supervision of pregnancy with insufficient antenatal care, unspecified trimester
- O09.31Supervision of pregnancy with insufficient antenatal care, first trimester
- O09.32Supervision of pregnancy with insufficient antenatal care, second trimester
- O09.33Supervision of pregnancy with insufficient antenatal care, third trimester
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- V237Approximate match
Associated MS-DRGs
O09.33 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.