O43.91 is the authoritative medical code for Unspecified placental disorder, first trimester. This classification is used in medical billing and clinical recording to specify the clinical criteria for unspecified placental disorder, first trimester (ICD-10-CM O43.91), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Unspecified placental disorder, first trimester is a billable ICD-10-CM diagnosis code O43.91. Excludes2 (not included here): maternal care for poor fetal growth due to placental insufficiency O36.5-; placenta previa O44.-; placental polyp O90.89; placentitis O41.14-; premature separation of placenta abruptio placentae.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for O43.91 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- maternal care for poor fetal growth due to placental insufficiency O36.5-
- placenta previa O44.-
- placental polyp O90.89
- placentitis O41.14-
- premature separation of placenta abruptio placentae
Frequently Asked Questions (FAQ) & Clinical Guidance
Can O43.91 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, O43.91 and the following are not considered part of each other and may both be reported when both conditions are present: maternal care for poor fetal growth due to placental insufficiency (O36.5-); placenta previa (O44.-); placental polyp (O90.89); placentitis (O41.14-).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to O43.91 in its code family, with their registry titles.
- O43 — Placental disorders
- O43.0 — Placental transfusion syndromes
- O43.01 — Fetomaternal placental transfusion syndrome
- O43.011 — Fetomaternal placental transfusion syndrome, first trimester
- O43.012 — Fetomaternal placental transfusion syndrome, second trimester
- O43.013 — Fetomaternal placental transfusion syndrome, third trimester
- O43.019 — Fetomaternal placental transfusion syndrome, unspecified trimester
- O43.02 — Fetus-to-fetus placental transfusion syndrome
- O43.021 — Fetus-to-fetus placental transfusion syndrome, first trimester
- O43.022 — Fetus-to-fetus placental transfusion syndrome, second trimester
View all 40 codes in the O43 family