O36.011
Maternal care for anti-D [Rh] antibodies, first trimester
O36.011 is a non-billable ICD-10-CM code header for maternal care for anti-D [Rh] antibodies, first trimester. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. A 7th character is required to complete the code. Its coding notes include a Use additional code instruction, 3 Excludes1 entries and 5 Excludes2 entries.
7th character
Category O36 requires a 7th character.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
The trimester character comes from the provider's documentation for the current encounter. The unspecified trimester code should rarely be used.
Use additional code
Add the listed code as a secondary code, if known.
Also from chapter/block level (1 note)
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Also from chapter/block level (1 note)
- supervision of normal pregnancy (Z34.-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- labor and delivery complicated by fetal stress (O77.-)
Also from chapter/block level (4 notes)
Includes
Further defines or gives examples of the content of the category.
- the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy
Notes
Also from chapter/block level (6 notes)
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
7th-character codes under O36.011 7
- O36.0110Maternal care for anti-D [Rh] antibodies, first trimester, not applicable or unspecifiedBillable
- O36.0111Maternal care for anti-D [Rh] antibodies, first trimester, fetus 1Billable
- O36.0112Maternal care for anti-D [Rh] antibodies, first trimester, fetus 2Billable
- O36.0113Maternal care for anti-D [Rh] antibodies, first trimester, fetus 3Billable
- O36.0114Maternal care for anti-D [Rh] antibodies, first trimester, fetus 4Billable
- O36.0115Maternal care for anti-D [Rh] antibodies, first trimester, fetus 5Billable
- O36.0119Maternal care for anti-D [Rh] antibodies, first trimester, other fetusBillable