O44.33 Partial placenta previa with hemorrhage, third trimester

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from O44.3 Partial placenta previa with hemorrhage

Applicable to

• Marginal placenta previa with hemorrhage

MS-DRG index

Defines the logic of DRG(s) 817-819 in MDC 14.

Approximate ICD-9-CM (GEMs)

• 641.11 Hemorrhage from placenta previa, delivered, with or without mention of antepartum condition (approximate)
• 641.13 Hemorrhage from placenta previa, antepartum condition or complication (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Maternity diagnoses (age 9 through 64): Age conflict edit. These diagnoses are clinically expected only in patients age 9 through 64.

Code annotations containing back-references to O44.33

Back-references to O44

• Type 2 Excludes: O43 Placental disorders ("placenta previa (O44.-)")
• Type 1 Excludes: O46 Antepartum hemorrhage, not elsewhere classified ("placenta previa (O44.-)")
• Type 1 Excludes: O67 Labor and delivery complicated by intrapartum hemorrhage, not elsewhere classified ("placenta previa (O44.-)")

Nearby codes

• O44.23 Partial placenta previa NOS or without hemorrhage, third trimester
• O44.3 Partial placenta previa with hemorrhage
• O44.30 Partial placenta previa with hemorrhage, unspecified trimester
• O44.31 Partial placenta previa with hemorrhage, first trimester
• O44.32 Partial placenta previa with hemorrhage, second trimester
• O44.33 Partial placenta previa with hemorrhage, third trimester (this code)
• O44.4 Low lying placenta NOS or without hemorrhage
• O44.40 Low lying placenta NOS or without hemorrhage, unspecified trimester
• O44.41 Low lying placenta NOS or without hemorrhage, first trimester
• O44.42 Low lying placenta NOS or without hemorrhage, second trimester
• O44.43 Low lying placenta NOS or without hemorrhage, third trimester