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ICD-10-CM 2027

ICD-10 code for oligohydramnios

O41.0

Oligohydramnios

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Oligohydramnios”. Page updated September 29, 2026.

About coding oligohydramnios

The ICD-10-CM code for oligohydramnios is O41.0 (Oligohydramnios).

Within O41 (other disorders of amniotic fluid and membranes), O41.0 is specifically for oligohydramnios. Related codes cover infection of amniotic sac and membranes (O41.1), other specified disorders of amniotic fluid and membranes (O41.8) and disorder of amniotic fluid and membranes, unspecified (O41.9).

Codes in this range require a 7th character: 0 for not applicable or unspecified, 1 for fetus 1, 2 for fetus 2, 3 for fetus 3, 4 for fetus 4, 5 for fetus 5 and 1 more. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about oligohydramnios ICD-10 codes

What is the ICD-10 code for oligohydramnios?

O41.0 — Oligohydramnios (a header code; report a more specific subcode).

Is O41.0 billable?

No. O41.0 is a header code. Report one of its more specific subcodes instead.