O35.5 ICD-10-CA subcategory: Maternal care for (suspected) damage to fetus by drugs

O35.5 isn’t a code on its own. Choose one of the 3 codes beneath it, the one the documentation supports.

Official description

O35.5

Maternal care for (suspected) damage to fetus by drugs

ICD-10-CA · Canada · Also written O355

Codes in O35.5

O35.5 isn’t a code on its own. Open the code that matches what the note documents.

O35.501Maternal care for (suspected) damage to fetus by drugs, delivered, with or without mention of antepartum condition O35.503Maternal care for (suspected) damage to fetus by drugs, antepartum condition or complication O35.509Maternal care for (suspected) damage to fetus by drugs, unspecified as to episode of care, or not applicable

Notes for O35.5

As CIHI prints them, with any note O35.5 takes from the headings above it.

Includes

• Maternal care for (suspected) damage to fetus from drug addiction
The listed conditions in the fetus as a reason for observation, hospitalization or other obstetric care of the mother, or for termination of pregnancyFrom O35 Maternal care for known or suspected fetal abnormality and damage

Excludes

Conditions classified elsewhere.

• fetal distress in labour and delivery due to drug administration (O68.-)
Maternal care for known or suspected disproportion (O33.-)From O35 Maternal care for known or suspected fetal abnormality and damage
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 O35.5 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 O35Maternal care for known or suspected fetal abnormality and damage
4Subcategory O35.5Maternal care for (suspected) damage to fetus by drugs

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 O35.5 in the CIHI source

Frequently asked questions

Is O35.5 a valid ICD-10-CA code?

No. O35.5 (Maternal care for (suspected) damage to fetus by drugs) is a subcategory heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 3 codes; record the one the documentation supports.

Where is O35.5 in ICD-10-CA?

O35.5 sits under O35 Maternal care for known or suspected fetal abnormality and damage, 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 O35.5?

ICD-10-CA lists Includes, Excludes, Note notes for O35.5, 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.

View O35