O36.0 vs R76.0
O36.0 (Maternal care for rhesus isoimmunization) compared with R76.0 (Raised antibody titer), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. R76.0 carries an Excludes1 note covering O36.0: “isoimmunization in pregnancy (O36.0-O36.1)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| O36.0Maternal care for rhesus isoimmunization | R76.0Raised antibody titer | |
|---|---|---|
| Billing status | Non-billable header Report instead: O36.0110, O36.0111, O36.0112, O36.0113, O36.0114 | Billable |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Maternal care for rhesus isoimmunization is a non-billable ICD-10-CM category code (O36.0). | Raised antibody titer is a billable ICD-10-CM diagnosis code (R76.0). |
| 7th character | One of the following 7th characters is to be assigned to each code under category O36. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O36 that has a 7th character of 1 through 9. | — |
| Includes | the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy Maternal care for Rh incompatibility (with hydrops fetalis) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources