O36.831 — Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester
Is O36.831 billable?
No — O36.831 is a non-billable header code. O36.831 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 7 billable codes beneath O36.831.
Billable codes under this header
- O36.8310Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, not applicable or unspecified
- O36.8311Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 1
- O36.8312Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 2
- O36.8313Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 3
- O36.8314Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 4
- O36.8315Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 5
- O36.8319Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, other fetus
O36.831 at a glance
| Code | O36.831 |
|---|---|
| Description | Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is O36.831 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under O36.83, the nearest indexed parent of O36.831. Use them to find the family, then select the specific code.
- Pregnancy › complicated by › abnormal, abnormality › fetal heart rate or rhythm (single) (uterine)
- Pregnancy › complicated by › fetal › bradycardia (single) (uterine)
- Pregnancy › complicated by › fetal › depressed heart rate tones (single) (uterine)
- Pregnancy › complicated by › fetal › heart rate irregularity (single) (uterine)
- Pregnancy › complicated by › fetal › non-reassuring heart rate or rhythm (single) (uterine)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O36.831 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- supervision of normal pregnancy (Z34.-)
Excludes1 — never code together — inherited from O36
The conditions below can never be reported together with O36.831 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 15
Report an additional code alongside O36.831 to fully describe the condition. O36.831 is sequenced first.
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Excludes2 — not included here — inherited from Chapter 15
The conditions below are not part of O36.831, but a patient may have both at the same time. When documentation supports it, O36.831 and the excluded code may both be reported.
Excludes2 — not included here — inherited from O36
The conditions below are not part of O36.831, but a patient may have both at the same time. When documentation supports it, O36.831 and the excluded code may both be reported.
- labor and delivery complicated by fetal stress (O77.-)
What codes fall under O36.831? (7)
- O36.8310Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, not applicable or unspecified
- O36.8311Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 1
- O36.8312Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 2
- O36.8313Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 3
- O36.8314Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 4
- O36.8315Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 5
- O36.8319Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, other fetus
How long has O36.831 existed?
O36.831 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the O36.83 family? (3)
- O36.832Maternal care for abnormalities of the fetal heart rate or rhythm, second trimesternot billable
- O36.833Maternal care for abnormalities of the fetal heart rate or rhythm, third trimesternot billable
- O36.839Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimesternot billable