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O26.501 ICD-10-CA code: Maternal hypotension syndrome, delivered, with or without mention of antepartum condition

O26.501 is the ICD-10-CA code for “Maternal hypotension syndrome, delivered, with or without mention of antepartum condition” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

O26.501

Maternal hypotension syndrome, delivered, with or without mention of antepartum condition

Short description: Maternal hypotension syndrome/delivered

ICD-10-CA · Canada · Also written O26501

Notes for O26.501

As CIHI prints them, with any note O26.501 takes from the headings above it.

Includes

Excludes

Conditions classified elsewhere.

  • Maternal:• care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)• diseases classifiable elsewhere but complicating pregnancy, labour and delivery, and the puerperium (O98-O99)From O20-O29 Other maternal disorders predominantly related to pregnancy
  • 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 O24.- and O25.- include the listed conditions even if they occur during childbirth or the puerperium.From O20-O29 Other maternal disorders predominantly related to pregnancy
  • 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 O26.501 sits

  1. 1ChapterChapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
  2. 2Block O20-O29Other maternal disorders predominantly related to pregnancy
  3. 3Category O26Maternal care for other conditions predominantly related to pregnancy
  4. 4Subcategory O26.5Maternal hypotension syndrome
  5. 5Valid code O26.501Maternal hypotension syndrome, 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.

See O26.501 in the CIHI source

Frequently asked questions

What does ICD-10-CA code O26.501 mean?

O26.501 is the ICD-10-CA code for “Maternal hypotension syndrome, delivered, with or without mention of antepartum condition” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is O26.501 in ICD-10-CA?

O26.501 sits under O26.5 Maternal hypotension syndrome, within O26 Maternal care for other conditions predominantly related to pregnancy, within O20-O29 Other maternal disorders predominantly related to pregnancy, within Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99).

What coding notes apply to O26.501?

ICD-10-CA lists Includes, Note, Excludes notes for O26.501, 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.

Codes beside O26.501

O26.502Maternal hypotension syndrome, delivered, with mention of postpartum complicationO26.503Maternal hypotension syndrome, antepartum condition or complicationO26.504Maternal hypotension syndrome, postpartum condition or complicationO26.509Maternal hypotension syndrome, unspecified as to episode of care, or not applicable