O66.903 ICD-10-CA code: Obstructed labour, unspecified, antepartum condition or complication
O66.903 is the ICD-10-CA code for “Obstructed labour, unspecified, antepartum condition or complication” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
O66.903Obstructed labour, unspecified, antepartum condition or complication
Short description: Obstructed lab unspecified/antepartum
ICD-10-CA · Canada · Also written O66903
Notes for O66.903
As CIHI prints them, with any note O66.903 takes from the headings above it.
Includes
- • Dystocia fetal NOS• Dystocia maternal NOS• Dystocia NOSFrom O66.9 Obstructed labour, unspecified
Excludes
Conditions classified elsewhere.
- 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 O66.903 sits
- 1ChapterChapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
- 2Block O60-O75Complications of labour and delivery
- 3Category O66Other obstructed labour
- 4Subcategory O66.9Obstructed labour, unspecified
- 5Valid code O66.903Obstructed labour, unspecified, 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 O66.903 mean?
O66.903 is the ICD-10-CA code for “Obstructed labour, unspecified, antepartum condition or complication” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is O66.903 in ICD-10-CA?
O66.903 sits under O66.9 Obstructed labour, unspecified, within O66 Other obstructed labour, within O60-O75 Complications of labour and delivery, within Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99).
What coding notes apply to O66.903?
ICD-10-CA lists Includes, Note, Excludes notes for O66.903, 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.