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ICD-10-CM · FY 2026 APRIL UPDATE

O36.19

Maternal care for other isoimmunization

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
O36.191Maternal care for other isoimmunization, first trimesterCategory
O36.1910Maternal care for other isoimmunization, first trimester, not applicable or unspecifiedBillable
O36.1911Maternal care for other isoimmunization, first trimester, fetus 1Billable
O36.1912Maternal care for other isoimmunization, first trimester, fetus 2Billable
O36.1913Maternal care for other isoimmunization, first trimester, fetus 3Billable
O36.1914Maternal care for other isoimmunization, first trimester, fetus 4Billable
O36.1915Maternal care for other isoimmunization, first trimester, fetus 5Billable
O36.1919Maternal care for other isoimmunization, first trimester, other fetusBillable
O36.192Maternal care for other isoimmunization, second trimesterCategory
O36.1920Maternal care for other isoimmunization, second trimester, not applicable or unspecifiedBillable
O36.1921Maternal care for other isoimmunization, second trimester, fetus 1Billable
O36.1922Maternal care for other isoimmunization, second trimester, fetus 2Billable
O36.1923Maternal care for other isoimmunization, second trimester, fetus 3Billable
O36.1924Maternal care for other isoimmunization, second trimester, fetus 4Billable
O36.1925Maternal care for other isoimmunization, second trimester, fetus 5Billable
O36.1929Maternal care for other isoimmunization, second trimester, other fetusBillable
O36.193Maternal care for other isoimmunization, third trimesterCategory
O36.1930Maternal care for other isoimmunization, third trimester, not applicable or unspecifiedBillable
O36.1931Maternal care for other isoimmunization, third trimester, fetus 1Billable
O36.1932Maternal care for other isoimmunization, third trimester, fetus 2Billable
O36.1933Maternal care for other isoimmunization, third trimester, fetus 3Billable
O36.1934Maternal care for other isoimmunization, third trimester, fetus 4Billable
O36.1935Maternal care for other isoimmunization, third trimester, fetus 5Billable
O36.1939Maternal care for other isoimmunization, third trimester, other fetusBillable
O36.199Maternal care for other isoimmunization, unspecified trimesterCategory
O36.1990Maternal care for other isoimmunization, unspecified trimester, not applicable or unspecifiedBillable
O36.1991Maternal care for other isoimmunization, unspecified trimester, fetus 1Billable
O36.1992Maternal care for other isoimmunization, unspecified trimester, fetus 2Billable
O36.1993Maternal care for other isoimmunization, unspecified trimester, fetus 3Billable
O36.1994Maternal care for other isoimmunization, 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.