O36.221 ICD-10-CA code: Maternal care for hydrops fetalis, second trimester, delivered, with or without mention of antepartum condition
O36.221 is the ICD-10-CA code for “Maternal care for hydrops fetalis, second trimester, delivered, with or without mention of antepartum condition” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
O36.221Maternal care for hydrops fetalis, second trimester, delivered, with or without mention of antepartum condition
Short description: Mat care hyd fetalis 2nd trim/delivered
ICD-10-CA · Canada · Also written O36221
Notes for O36.221
As CIHI prints them, with any note O36.221 takes from the headings above it.
Includes
- Hydrops fetalis:• NOS• not associated with isoimmunizationFrom O36.2 Maternal care for hydrops fetalis
- The listed conditions in the fetus as a reason for observation, hospitalization or other obstetric care of the mother, or for termination of pregnancyFrom O36 Maternal care for other known or suspected fetal problems
Excludes
Conditions classified elsewhere.
- Labour and delivery complicated by fetal stress [distress] (O68.-)placental transfusion syndromes (O43.-)From O36 Maternal care for other known or suspected fetal problems
- 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 O36.221 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 O36Maternal care for other known or suspected fetal problems
- 4Subcategory O36.2Maternal care for hydrops fetalis
- 5Subcategory O36.22Maternal care for hydrops fetalis, second trimester
- 6Valid code O36.221Maternal care for hydrops fetalis, second trimester, delivered, with or without mention of antepartum condition
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 O36.221 mean?
O36.221 is the ICD-10-CA code for “Maternal care for hydrops fetalis, second trimester, delivered, with or without mention of antepartum condition” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is O36.221 in ICD-10-CA?
O36.221 sits under O36.22 Maternal care for hydrops fetalis, second trimester, within O36.2 Maternal care for hydrops fetalis, within O36 Maternal care for other known or suspected fetal problems, 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 O36.221?
ICD-10-CA lists Includes, Excludes, Note notes for O36.221, 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.