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O36.831

Non-billable

Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester

O36.831 is the ICD-10-CM code for Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester. It is a non-billable category code — use a more specific child code such as O36.8310 for billing.

Status
Header (non-billable)
Chapter
O00-O9A
Parent
O36.83
Subcodes
7
Edition
FY2026

O00-O9A Pregnancy, childbirth and the puerperium

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code O36.831?
O36.831 is the ICD-10-CM code for "Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
Is O36.831 a billable code?
No — O36.831 is a non-billable header code. Use a more specific child code (such as O36.8310) for billing.
What are the subcodes of O36.831?
O36.831 has 7 more specific child codes, including O36.8310, O36.8311, O36.8312.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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