O41.023 ICD-10-CA code: Oligohydramnios, second trimester, antepartum condition or complication
O41.023 is the ICD-10-CA code for “Oligohydramnios, second trimester, antepartum condition or complication” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
O41.023Oligohydramnios, second trimester, antepartum condition or complication
Short description: Oligohydramnios 2nd trim/antepart
ICD-10-CA · Canada · Also written O41023
Notes for O41.023
As CIHI prints them, with any note O41.023 takes from the headings above it.
Includes
- • Oligohydramnios without mention of rupture of membranesFrom O41.02 Oligohydramnios, second trimester
Excludes
Conditions classified elsewhere.
- Premature rupture of membranes (O42.-)From O41 Other disorders of amniotic fluid and membranes
- Certain diseases or injuries complicating pregnancy, childbirth, and the puerperium classified elsewhere:external causes (for mortality) (V,W,X,Y)injury, poisoning and certain other consequences of external causes (S00-T88.1, T88.6-T98)mental and behavioural disorders associated with the puerperium (F53.-)obstetrical tetanus (A34)postpartum necrosis of pituitary gland (E23.0)puerperal osteomalacia (M83.0)supervision of:• high-risk pregnancy (Z35.-)• normal pregnancy (Z34.-)From Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
Note
- The codes included in this chapter are to be used for conditions related to or aggravated by the pregnancy, childbirth or by the puerperium (maternal causes or obstetric causes)From Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
Where O41.023 sits
- 1ChapterChapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
- 2Block O30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems
- 3Category O41Other disorders of amniotic fluid and membranes
- 4Subcategory O41.0Oligohydramnios
- 5Subcategory O41.02Oligohydramnios, second trimester
- 6Valid code O41.023Oligohydramnios, second trimester, antepartum condition or complication
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code O41.023 mean?
O41.023 is the ICD-10-CA code for “Oligohydramnios, second trimester, antepartum condition or complication” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is O41.023 in ICD-10-CA?
O41.023 sits under O41.02 Oligohydramnios, second trimester, within O41.0 Oligohydramnios, within O41 Other disorders of amniotic fluid and membranes, within O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems, within Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99).
What coding notes apply to O41.023?
ICD-10-CA lists Includes, Excludes, Note notes for O41.023, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.