O41.0

ICD-10Non-billable category

Oligohydramnios

Official ICD-10-CM descriptor (FY2026)

Oligohydramnios

O41.0 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Inclusion terms

Oligohydramnios without rupture of membranes

ICD-10-CM FY2026 defines 4 codes beneath O41.0. See the ICD-10-CM index for what this site publishes.

Related codes in O41

Where this code sits

Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
Parent code: O41

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.