O90 ICD-10-CA category: Complications of the puerperium, not elsewhere classified
O90 isn’t a code on its own. Choose one of the 24 codes beneath it, the one the documentation supports.
Official description
O90Complications of the puerperium, not elsewhere classified
ICD-10-CA · Canada
Codes in O90
O90 isn’t a code on its own. Open the group that matches what the note documents.
O90.0Disruption of caesarean section wound (3 codes)O90.1Disruption of perineal obstetric wound (3 codes)O90.2Haematoma of obstetric wound (3 codes)O90.3Cardiomyopathy in the puerperium (3 codes)O90.4Postpartum acute renal failure (3 codes)O90.5Postpartum thyroiditis (3 codes)O90.8Other complications of the puerperium, not elsewhere classified (3 codes)O90.9Complication of the puerperium, unspecified (3 codes)Notes for O90
As CIHI prints them, with any note O90 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Mental and behavioural disorders associated with the puerperium (F53.-)obstetrical tetanus (A34)puerperal osteomalacia (M83.0)From O85-O92 Complications predominantly related to the puerperium
- 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
- Categories O88.-, O91.- and O92.- include the listed conditions even if they occur during pregnancy and childbirth.From O85-O92 Complications predominantly related to the puerperium
- 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 O90 sits
- 1ChapterChapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
- 2Block O85-O92Complications predominantly related to the puerperium
- 3Category O90Complications of the puerperium, not elsewhere classified
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
Is O90 a valid ICD-10-CA code?
No. O90 (Complications of the puerperium, not elsewhere classified) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 24 codes; record the one the documentation supports.
Where is O90 in ICD-10-CA?
O90 sits under O85-O92 Complications predominantly related to the puerperium, within Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99).
What coding notes apply to O90?
ICD-10-CA lists Note, Excludes notes for O90, 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.