| Full description | Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, not applicable or unspecified |
| Billable | Yes |
| Chapter | Chapter 15: Pregnancy, childbirth and the puerperium (O00-O9A) |
| Section | Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48) |
| Parent code | O36.833 — Matern care for abnlt of fetal heart rate or rhym, third tri |