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ICD-10-CM · FY 2026 APRIL UPDATE

O36.83

Maternal care for abnormalities of the fetal heart rate or rhythm

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
O36.831Maternal care for abnormalities of the fetal heart rate or rhythm, first trimesterCategory
O36.8310Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, not applicable or unspecifiedBillable
O36.8311Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 1Billable
O36.8312Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 2Billable
O36.8313Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 3Billable
O36.8314Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 4Billable
O36.8315Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 5Billable
O36.8319Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, other fetusBillable
O36.832Maternal care for abnormalities of the fetal heart rate or rhythm, second trimesterCategory
O36.8320Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, not applicable or unspecifiedBillable
O36.8321Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 1Billable
O36.8322Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 2Billable
O36.8323Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 3Billable
O36.8324Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 4Billable
O36.8325Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 5Billable
O36.8329Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, other fetusBillable
O36.833Maternal care for abnormalities of the fetal heart rate or rhythm, third trimesterCategory
O36.8330Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, not applicable or unspecifiedBillable
O36.8331Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 1Billable
O36.8332Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 2Billable
O36.8333Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 3Billable
O36.8334Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 4Billable
O36.8335Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 5Billable
O36.8339Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, other fetusBillable
O36.839Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimesterCategory
O36.8390Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimester, not applicable or unspecifiedBillable
O36.8391Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimester, fetus 1Billable
O36.8392Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimester, fetus 2Billable
O36.8393Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimester, fetus 3Billable
O36.8394Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimester, fetus 4Billable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.