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O74.503 ICD-10-CA code: Spinal and epidural anaesthesia-induced headache during labour and delivery, antepartum condition or complication

O74.503 is the ICD-10-CA code for “Spinal and epidural anaesthesia-induced headache during labour and delivery, antepartum condition or complication” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

O74.503

Spinal and epidural anaesthesia-induced headache during labour and delivery, antepartum condition or complication

Short description: Spn epid headdache in lab&del/antepart

ICD-10-CA · Canada · Also written O74503

Notes for O74.503

As CIHI prints them, with any note O74.503 takes from the headings above it.

Includes

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 O74.503 sits

  1. 1ChapterChapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
  2. 2Block O60-O75Complications of labour and delivery
  3. 3Category O74Complications of anaesthesia during labour and delivery
  4. 4Subcategory O74.5Spinal and epidural anaesthesia-induced headache during labour and delivery
  5. 5Valid code O74.503Spinal and epidural anaesthesia-induced headache during labour and delivery, 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.

See O74.503 in the CIHI source

Frequently asked questions

What does ICD-10-CA code O74.503 mean?

O74.503 is the ICD-10-CA code for “Spinal and epidural anaesthesia-induced headache during labour and delivery, antepartum condition or complication” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is O74.503 in ICD-10-CA?

O74.503 sits under O74.5 Spinal and epidural anaesthesia-induced headache during labour and delivery, within O74 Complications of anaesthesia during labour and delivery, within O60-O75 Complications of labour and delivery, within Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99).

What coding notes apply to O74.503?

ICD-10-CA lists Includes, Note, Excludes notes for O74.503, 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 O74.503

O74.501Spinal and epidural anaesthesia-induced headache during labour and delivery, delivered, with or without mention of antepartum conditionO74.502Spinal and epidural anaesthesia-induced headache during labour and delivery, delivered, with mention of postpartum complicationO74.504Spinal and epidural anaesthesia-induced headache during labour and delivery, postpartum condition or complicationO74.509Spinal and epidural anaesthesia-induced headache during labour and delivery, unspecified as to episode of care, or not applicable